Installation of snow retainers on a roof made of metal or how to protect yourself from snow masses. Installation of snow retainers on a roof made of metal

A metal roof should be practical, durable, beautifully crafted and, of course, safe. In order to fulfill the latter requirement, suitable snow retainers must be installed on the roof, which are special structures responsible for the safe melting of snow. They are also necessary so that the roof does not deform under a mass of icy snow.

The weight of snow masses can be much greater than the weight of the roof itself, so precipitation loads are a serious problem that should be addressed even when making foundation calculations.

The safety of the roof directly depends on the snow mass that falls on it. It is difficult to predict how it will be distributed over the roof. It all depends on the slope of the roof, wind direction, etc. When, first of all, the load of snow masses should be taken into account.

Roof snow load calculation

To make this calculation, you need a special formula:

Q = G * s, where

Q - snow load
G is the weight of snow on a flat roof, which is determined from the table
S - correction factor depending on the angle of the roof:

> 25° - 1
If 25-60° - 0.7
More than 60 ° - the snow load is not taken into account, since snow with such an inclination will not be able to linger on the roof.

How to determine G? This information is found in tables and maps of snow cover zones on the territory of the Russian Federation.

The maximum length of the slope when installing 1 row of snow guards

Functions of snow retention systems

Prevention of unexpected descent of ice and snow deposits from the roof
Easier roof snow removal
Roof protection from strong winds when sheets of tiles can come off
Protection of drains from clogging with snow, which, when turned into ice, can break the pipe
Prevention of facade deformation by rolling snow and falling icicles

The main types of snow retention systems

Tubular systems

Usually at the heart of such snow holders lies a pipe installed along the roof. On the metal tile, the tubes are fixed where the connection of the roof and bearing wall.

It is impossible to attach to such structures, as the entire system may collapse.

If the roof slope is sufficiently long, then the installation of tubular snow retainers on the metal tile should be carried out in several rows. On the roof, the tubes are mounted either in a checkerboard pattern or end-to-end.

If there is an attic in the house, the tubular system must also be installed above its window openings. A sufficient distance from the edge of the roof is 40-50 cm, i.e. approximately where 3-4 tiles go.

Lattice snow guards

Such designs are considered the most effective, which explains their popularity. They can be of two types - ordinary and "royal". There are no special differences between them. The division is made according to the supports, as well as according to the complexity of manufacturing the lattice.

To make a choice, you can choose universal models, which will fit both delays.

Due to the fact that the gratings are quite high, they demonstrate their safety both in winter and in summer, when it is necessary to carry out roofing. From a possible fall, both materials and tools, as well as workers, will be saved.

Corner snow guards

They act as a thin sheet of steel, which is coated with a polymer material that prevents corrosion. Due to their simple design, they are the most inexpensive option protection against snow rolling off the roof.

Corner systems can be found in absolutely any color, which makes it easy to match them to the tiles.

Fastening corner snow retainers to metal tiles is carried out using self-tapping screws and ordinary corners. Protective systems attached to the top wave of the sheet.

Snow retaining yoke

The yokes are not a separate snow-retaining structure, as these are additional elements.

You can use yokes with any of the above snow retainers.

In the process of installing snow retainers on metal tiles, the yokes must be evenly attached to all roof slopes, given that their efficiency is low and they can only hold the lower layer of snow.

It makes no sense to use yokes as the only system for retaining snow deposits.

Snow-retaining logs

This is the oldest system for retaining ice and snow. The first logs on the roof began to be used on Bavarian and Alpine houses, but even today this design does not lose its relevance.

The advantage of log snow retainers is their reliability, since a large pipe not only holds snow well over its entire area, but also withstands significant loads.

Modern log snow retainers are not made of wood, but metal pipes, with a diameter of 140 mm. support structure for such systems is usually made of steel sheets.

When to Install Snow Guards

The most optimal time for installing snow retention systems is the arrangement or repair of the roof.

It is best to choose suitable retaining structures together with the type of roof. The choice should be based on factors such as climatic features terrain and roof features.

If the roof is soft, then point snow retainers or snow stoppers are most often installed. This system It is a narrow steel strip, curved at the end into a triangle. To make a snow stopper, you need galvanized steel or powder-coated metal.

Installation should be done when the roof material is being laid, attaching the snow stoppers to the base and covering the fixing point with another roofing sheet.

If such snow retainers are already mounted on finished roof, then you should apply rubber seals to avoid future leaks.

If the winters are long and snowy, then the snow retention system should be as effective as possible. When snow is a rarity or it always has time to melt before the next precipitation, then you can pick up cheap, but at the same time effective corner structures or, as they are also called, barriers
With heavy snowfalls, mesh and tubular snow retainers will be the best option, which will solve the problem not only with snow and icicles, but will also be convenient when dumping snow and ice deposits from the roof
It is important to remember that it is necessary to clean not only the roof from adhering ice and snow, but snow retention devices, because a lot of ice accumulates on them, which prevents normal snowmelt

Before installing snow retainers on the roof of the metal tile, install other elements. Required to be completed. Because it is a significant element of the roof, which provides its ventilation.

Installation of roof windows in metal tiles must be carried out before installing the ridge. Improper installation or poor waterproofing of such windows will negate all efforts to build a roof. Take on the installation of skylights better themes who already has experience in construction work, and only subject to instructions and rules.

In the West, no house will be taken into operation if snow-retaining devices are not installed on its roof. In our country, they also began to monitor safety and many reasonable owners, in the process of building their house, install similar systems so that in the future, when it becomes clear that they are simply necessary, they do not have to redo the roof.

It can be said that roof snow retention systems are very practical and necessary element. They protect people and cars from falling icicles and snowballs, while maintaining all the intended aesthetics of the roof.

Video about installing snow retainers on metal tiles

Video instruction about snow retainers for metal tiles, how to make right choice and how to install them on the roof.
Comparison of tubular snow guards from different manufacturers

Installation of tubular-type snow retainers on metal tiles

The climate of most of Russia is famous for its frosty, snowy winters, so our people have developed a special attitude towards the cold. Therefore, snow is an indispensable participant in children's games and winter fun. However, the snow may not be so harmless, especially when it flies from the roof onto your head. The unorganized, avalanche-like descent of snow masses from roof slopes often causes injuries, injuries, damage to cars parked nearby and blockages on driveways. A comprehensive solution to these problems is the installation of snow retainers.

Roofs made of metal tiles especially require the installation of snow retention elements, since smooth surface stingrays facilitate the slipping of the snow cap. Ice crust formed when the bottom surface of the profiled sheet is heated warm air leaves deep scratches on it. In damaged places, where the protective galvanic layer is broken, corrosion centers appear. To prevent premature failure and roof leaks, snow retainers are used that work according to the following principles:

Important! The selection of devices for snow retention is carried out taking into account three criteria: the amount of precipitation in winter, the angle of inclination of the slope and the roofing. When choosing snow retainers for metal tiles, pay attention to models that work on the principle of a snow cutter. Due to the fact that snow is independently removed from the roof in a safe way, you can not be afraid to leave it without cleaning even in heavy snowfalls.

Types of snow retention systems

Types of snow retainers

Snow guards for metal tiles are available in the form of snow-blocking and snow-permeable structures. They are made from durable, high-quality metal, since each element is subjected to significant loads. The following types of snow retention elements are most popular:

Corner. These are the simplest structures used to hold snow masses on the roof slope. They represent metal corners from of stainless steel, painted in one color with a metal tile. The corners are fixed on the slope in 2-3 rows, placing in a checkerboard pattern. The cost of one corner is 100-150 rubles, so the installation of these elements will not hit the homeowner's pocket. With a tool and a sheet of metal, they are easily made by hand. However, the effectiveness of this design is extremely low and is not suitable for areas with a lot of snow and roofs with steep slopes.
Corner snow barriers

Damage to corner snow barriers as a result of heavy snow load
Trellised. Snow guards in the form of a lattice, fixed with brackets on the roof slope, are called lattice. They are included in the category of installation snow blowers, as they do not completely stop the melting of the snow layer. The bars of the lattice divide the snowdrift into parts, preventing large blocks and ice floes from sliding down. The more often the bars are located, the smaller portions of snow are dumped. Manufacturers recommend installing elements of this design on roofs with a slope of 35-45 degrees.
Lattice snow barrier
Lamellar. Snow retention elements made of metal plates and mounted on a slope with brackets are called lattice elements. They block the snow on the roof, preventing it from rolling until completely melted when under the effect. sun rays turns into water and goes down the drain. The installation of snow retainers of this type on steep slopes of 50-60 degrees is prohibited, since the plates do not withstand the pressure of snow rolling down at high speed, bend and damage the roofing.
Roof plate snow barrier
Tubular. Devices for snow retention of a tubular design are horizontal pipes with a diameter of 6-10 cm, installed in 2 rows along the slope in the form of a small barrier. Passing through it, the snow mass is divided into thin plates. Thanks to the portioned snowfall, its fall is carried out safely, without threatening the health of people passing by and without overloading the roof truss frame. Tubular snow retainers are fixed with the help of special holders and long roofing screws.
Tubular snow cutter

Important! The cost of one snow retainer of a tubular or lattice structure 3 m long is 1000-1500 rubles, which can negatively affect the homeowner's family budget. In order to save the elements for protection against falling snow, they are installed only above the places where the descent causes the greatest inconvenience: over the porch, paths, parking.

Installation

The installation of snow retention elements is planned during the design of the roof, as they increase the snow load on the truss frame and foundation. In advance, you need to decide on the design and principle of operation of the devices, since some of them require special conditions. The installation itself is quite simple and is done by hand in the following order:

Instructions for installing tubular snow cutters on metal tiles

Note! Usually one row of tubular devices is sufficient to contain snow masses on the roof. But if the amount of precipitation in winter period in the area where construction is underway, more than average, and the length of the slope exceeds 5 m, then professional roofers recommend installing an additional row that reduces the speed of snowmelt.

Video instruction

Any roof equipped with snow guards looks as impressive as a car with a spoiler or wing. But not beauty, but improving functionality is the main goal of installing such elements. If the spoiler and rear wing increase the streamlining of the car, then the snow retainers are elements that protect the life and health of people, as well as the safety of property.

What are snow retainers and why are they needed?

Snow guards are devices that are installed on the roof in order to control the descent of snow from it. The principle of operation of snow retainers is not to hold the entire mass of snow, turning the house into a huge snowdrift, which no roof can withstand. The task of snow retainers is to cut through blocks of snow that has stuck together and turned into ice, to contribute to its gradual, rather than avalanche-like descent from the roof, the main function of snow retainers is to break snow-ice clots like a sea breakwater, softening the aggression of a sea wave in a storm. Thus, snow retention as such does not occur, an avalanche broken into small pieces slides off the roof gradually, without posing a danger to cars, shrubs located in close proximity to the house, and most importantly people living in it.

The use of snow blowers is directly related to the climate. Why install elements that hold snow off the roof, if winter temperature does not fall below zero. In other regions, all roofs of residential buildings must be equipped with snow retention systems, regardless of the type of roof. In Western Europe, without the presence of these details on the slopes, the house may not be accepted for operation.

Advantages of using snow retainers for a metal roof

Installing snow retainers on a roof made of metal has many advantages, in addition to the fact that bright catchy elements are its undoubted decoration, they also:

do not allow unplanned gathering of mass of snow;
facilitate the operation of the roof;
protect against spontaneous sliding of elements during roof repairs;
eliminate clogging of drains;
protect the facade of the house from damage by ice blocks.

For each specific roof structure made of metal tiles, certain types of snow-catching systems are needed.

Snow guards or snow retention systems shown on modern market, are:

tubular;
lattice;
log;
corner;
tow ropes.

Snow guards for metal tiles are of the type of access, holding on the roof snowdrifts and barrier.

Characteristics of snow guards for metal tiles, helping to make the right choice for your roof

Snow guards for metal tiles can be both throughput and barrier. Access models are made from a pipe or grate, detaining from a corner.

To choose the right snow retention system for your roof, and then understand how to install snow retention on metal tiles, you need to familiarize yourself with the following rules.

Do-it-yourself installation of elements with your own hands is not at all complicated, it is important to strictly follow the safety rules. But before choosing the type of system, decide which one is better to use for a particular type of roof. own house, you should calculate the snow load on it. Preservation roof structure depends on the distribution of the load on it. It is impossible to guess how nature will scatter snow, but from the slope of the metal roof and the direction of the wind according to the formula Q \u003d G x S, it is possible to determine the snow load as accurately as possible. It is especially important to know this for those who install the roof and all its auxiliary elements with their own hands without the involvement of specialists. In this formula, the letter “Q” indicates the load from snow, “G” is the weight of the snow mass (average statistical data for the region are taken), “S” is a coefficient that depends on the angle of the roof. If the slope angle is below 25° "S" is equal to one, if below 60° "S" is equal to 0.7. Other values are not taken into account, if the roof is located at an angle greater than 60 °, then snow masses will not be able to linger on it.

Types of snow retainers for a roof made of metal

Snow catchers for metal lattice roofing are the most common type. They are considered the most effective, have an attractive appearance. Snow barriers in the form of a lattice may have differences in the design of supports, lattice shapes, there are universal and royal models, it is these differences that affect their cost.

This type is also valued for the large height of the grate, which is an excellent trap for falling things and tools when servicing metal tiles in the summer.

There are snow retainers in the form of a log, this outdated model, which appeared on the roofs of alpine chalets in past centuries, is rarely used today, mainly in order to withstand style features in architectural form. Today, tubular snow retainers for metal tiles are used, made of pipes with a diameter of 14 mm and steel supports. Tubular-type snow guards are widely used for metal tiles, because they are reliable, efficient, and easy to install with your own hands.

Corner snow-retaining structures for metal tiles attract with the simplicity of the device, low cost and a variety of colors. A snow guard for metal tiles made of a 50x50mm steel angle covered with anti-corrosion scrap will serve for a long time and reliably, protecting against snow mass falling from the roof like an avalanche. The installation of a self-tapping screw for fastening a corner-type snow retainer is carried out in the upper wave of the sheet.

A drag type or snow stopper is not a delay in itself. This is an additional material for all other types of snow retainers, which must be fixed 80 cm from the edge of the roof and evenly spaced over the entire area, bearing in mind that the effectiveness of these elements is low. Independent use of yokes for metal tiles is not reasonable.

The main points of installing snow retainers on metal tiles

Installation of snow retainers on metal tiles begins with the determination of the crate under the sheets. When installing the crate under the metal tile, the fastener fixes the edge of the wave, and there are structural elements to which it is necessary to attach the snow retainer support.

A rubber or paronite gasket is installed under the self-tapping screw, which secures the support of the snow retainer that falls into the middle of the wave of the metal tile sheet.

Snow guards are fastened to the metal tile taking into account the wave pitch and the crate pitch. That is why it is so important to correctly install the battens under the metal tile, follow all the instructions and rules. If mistakes were made during the installation of the roof structure, you should opt for snow retainers with a universal mount and oval tubes.

When installing snow retainers on metal tiles, it should be remembered that their function can be performed roof drains, walkways left on the roof after maintenance of the roof, chimney, antenna. The installation of snow retainers on metal tiles is carried out taking into account these details.

On any roof made of metal, there are also natural snow retainers, these are chimney pipes, dormer windows, dormer windows. It is not necessary to attach snow retainers to the metal tile in these places!

modern complex, original roofs from a metal tile without snow retainers, it is unreasonable to use from an economic point of view. These simple devices help keep the roof in its original form, protect gutters from destruction, and prevent premature destruction of the blind areas of the house from the fall of ice blocks.

The roof is the main protection of the house, so you do not need to skimp on its maintenance and improvement. For snow protection structures, installation will not be superfluous anti-icing system, which includes autonomous heating of the roof and gutters. Such a roof will serve for a long time, reliably covering the house from aggressive influences. environment. In conclusion, it is worth noting that any modern roof structures, from a simple weather vane to a complex system of protection from atmospheric precipitation, are an excellent decoration, a sign of wealth and good taste.

Functional purpose of snow retention systems

The elements presented on the market captivate with their diversity. The owner will have to independently find out which solutions will be optimal in each case, as well as how to install them correctly for maximum home security. The main functions of these solutions:

Level the probability of self-convergence of the snow cap.
The risk of unintentional clogging of the drain is excluded.
At times facilitate the cleaning of the roof from frost and wet snow.
Competently installed snow guard will not allow falling snow and icicles to damage the facade.

Snow guard options

There are several types of systems for metal roofing:

log;
lattice;
tubular;
in the form of small metal corners.

Such devices differ in the features of the action: barrier and throughput. And if the latter are mainly used to hold snow on objects with a small height, then the latter are used on high-rise buildings. Installing snow guards on a roof made of metal is not difficult, provided you take a responsible approach to work. First you need to calculate the snow load on the base of the roof.

Calculation of snow load on the roofing system

Experts focus on the fact that it is necessary to install metal structural elements with your own hands very carefully, following the instructions. The task of paramount importance is to calculate the load from precipitation on the roof. To do this, you can use the following dependency:

Q is the value of the snow load;
S - coefficient indicating the correction, which takes into account the slope of the roof (≥60 ° - the angle is not taken into account, since snow is swept away and falls from such a roof, from 25-60 ° - 0.7, ≥25 ° - 1);
G is the weight of precipitation (a special table is provided for snow).

For each region of our country, a map with a snow cover zone is provided.

Table for calculating the snow load

The main types of snow retainers

Log Solutions

One of the oldest mechanisms for dealing with snow and ice on the roof. For the first time, logs began to be placed in small alpine houses, but even in the 21st century they are losing their relevance. Their key advantage is high reliability and availability. This is not surprising, since the pipe can easily cope with heavy loads.

Modern tubular snow retainers for metal tiles are made of metal pipes, while the minimum diameter is 140 mm. Steel sheets act as a supporting structure.

Corner structures

Corner option

As a rule, we are talking about thin steel sheets coated with polymer protection, leveling the likelihood of corrosion. This is one of the simplest snow retainers from a constructive point of view. Despite their availability, corner products effectively protect the lid from snow.

It is optimal to mount snow retainers on metal tiles on traditional corners or on self-tapping screws. Protective structures are fixed mainly on the upper wave of the sheet.

Lattice solutions

Lattice-type snow guards are considered the most efficient and most in demand on the market. They, in turn, can be "royal" and ordinary. There are no fundamental structural differences between these two types. The division is purely arbitrary. Their fastening is carried out according to a similar principle. And the differences lie in the complexity of the lattice itself and the supporting elements.

When choosing, experts recommend stopping at universal models. Due to the high gratings, they provide high safety during operation, both in summer and in winter. Correct installation of these elements is only possible for specialists. In this case, not only workers, but also materials will be protected from falling.

Lattice solutions

When are snow guards installed?

To install snow retainers on metal tiles, you need to choose the right time for this event. Experts advise to implement your plan during the period of repair or arrangement of the roof. It is very important to select structures for a specific roofing material. First of all, you should focus on the design features of the roof, climate, and terrain features.

For soft roof it is preferable to use snow stoppers, point solutions. In most cases, this is a narrow steel strip that has a triangular shape. To fix it, 2-3 self-tapping screws are enough, and galvanized steel can be used for manufacturing.

note! If installation is carried out on a finished roof, it is extremely important to use special rubber sealing elements that level leaks.

Optimal number of snow guards

Installation of snow retainers on metal tiles is planned at the design stage of the roof, since there is an increase in snow load on the foundation and rafters as a whole. At the initial stage, the preferred designs are determined, since some of them require additional conditions. In general, it is quite simple to correctly fasten the elements, it is enough to adhere to a certain sequence of actions.

Installation Recommendations

Instructionfor installation:

The places of installation of protective structures on the roof are determined. In the vast majority of cases, installation is carried out along the cornice overhang. Experts strongly recommend equipping the first of the tiers above the load-bearing wall of a country house in order to eliminate the additional load on the overhangs.
Each subsequent row at a distance of 1.5 to 2 meters. For yoke and corner solutions, the most preferred is a checkerboard pattern, for lattice, plate and tubular solutions - in rows.

Location of the main solutions on the roof

In the area where the snow guards are supposed to be fixed, it is necessary to reinforce the crate with wooden boards.
After the roof is covered with metal tiles, you should pull the cord and mark the place for mounting the protective elements.
Brackets are attached to the slope using self-tapping screws with special press caps, while a step of 0.5 m is maintained between adjacent products. The number of elements is determined taking into account the slope of the roof - the steeper it is, the more brackets will be required.

Fastening of the main elements

On the brackets there are special hooks into which the gratings are inserted. The holders have small holes where the tubes are placed. The installer must check the reliability of fixing the structure upon completion of work.

Installation instructions for tubular snow guard

Advice! In the vast majority of cases, only 1 row of tubular structures is enough to contain the snow cap on the roof. If in your area there is a lot of snow in winter, and the total length of the 1st slope is from 5 m, you can install 2-row protection.

Correct and incorrect installation

Experienced craftsmen advise to adhere to a number of recommendations:

The snow retention system should be as efficient as possible in regions with long and snowy winters. For areas where snow rarely falls, you can limit yourself to cheap solutions.
Tubular and mesh products - the best choice for regions with frequent and heavy snowfalls. They will not only get rid of problems with snow, but also exclude the possibility of the formation of large icicles.

It is extremely important to clean both the roof and the most protective structures from ice and snow, since they are prone to the accumulation of precipitation.

None in Western countries Vacation home or a cottage cannot be put into operation if there are no snow guards on it. As for domestic realities, prudent owners install such systems in our country.

Snow guards for metal tiles video instruction

It can be stated that roof protection systems are an important and practical element. They are able to save not only the property of the owner of the house, but also the health of his family members. The roof retains its aesthetic and structural integrity.

The main purpose of the roof is to protect the building from atmospheric precipitation and give it a finished look in terms of aesthetics.

At the same time, the roof must remain safe even in heavy snowfalls and during thaws, when high probability of accumulated snow melting and icicles falling.

Snow retention on a metal roof is carried out with artificial barriers on the accumulation of snow on the roof overhangs.

Snow retention systems - what is it and why are they needed

The need to install snow retainers stems from the climatic features of most regions of the country, where snow falls in winter. significant amount precipitation in the form of snow. The formation of snow caps on the roofs cannot be prevented even by the absolutely smooth surface of the metal tile.

After the thickness of the snow crust on the roof reaches a certain value, there is a risk of collapse. If at this moment there is a person or a car under the roof cut, possible serious injury or damage. An even greater danger is represented by icicles that appear on the cut of the roof from the snow that has accumulated there and has begun to melt.

You can avoid such risks by installing snow guards - special fences placed on the roof. Their design allows you to withstand the weight of even the most powerful layer of snow, preventing it from falling sharply. In the future, this snow can either be removed, or wait for it to gradually melt under the sun's rays.

Snow guards provide protection against the formation of icicles by the fact that save lower part snow-free roofs. Due to this, during the thaw, the flowing water partially evaporates, and partially freezes on the metal tile, without accumulating in the thickness of the snow and without forming overhanging icicles.

In addition, snow guards perform a number of additional functions:

provide roof cleaning safety from snow;
protect against falling sheets of metal tiles during roof repairs or in hurricane winds;
prevent clogging of the drainage system.

Snow catchers are installed both along the roof overhangs and above the skylights, outlet points for heating and ventilation pipes. How to install snow guards on metal roofing? Before proceeding directly to the installation, you need to decide on the choice of snow retention system.

Types of snow holders

In construction practice, the most commonly used snow guards of the following types:

The listed types are also divided into two groups: throughput and barrier. The former are able to gradually pass snow and melt water through themselves (grid, pipe, yokes). The latter do not have such an ability (snow-retaining corners and logs).

The choice of the most suitable type depends on climatic conditions , as well as from design features existing roof: area, angle of inclination, strength of the truss system.

How to attach snow guards to metal roofing?

The installation of snow guards on a roof made of metal begins with the choice of the type of snow guards. However, the list necessary materials and tools will about the same:

set of snow-retaining elements;
screwdriver;
keys 8 mm;
jigsaw or hacksaw for metal.

snow guards for metal roofs

It is strongly not recommended to use a grinder for cutting material.. metal systems snow retention in most cases have a polymeric protective coating, similar to the coating of metal tiles.

Cutting with a grinder involves the use of a rotating at high speed cutting disc, which leads to melting and destruction of the protective layer on protective pipes, corners or gratings. In the future, during the operation of the roof, corrosion will begin from these places, reducing the mechanical strength of the structure.

Fastening tubular systems

Tubular snow guards for metal tiles are supplied in the form of kits which includes the following:

snow-retaining pipe;
fixing brackets(fastening of snow retainers on a metal tile);
screws 8×50 mm;
gaskets 7 and 14 mm.

The number of rows of snow retention will depend on the length of the roof slope. If it is less than 5 meters, then one row will be enough.

On longer slopes, a second row of pipes is installed, located 3 meters above the first.

How to properly install snow guards on metal roofing?

Let's start with the fact that the bottom row of pipe holders is mounted above the load-bearing wall of the house. In this case, the distance to the roof cut should be at least 40 cm., which corresponds to the second or third row of tiles.

NOTE!

It is not allowed to install snow retainers on the cornice overhang. In addition to the fact that this will lead to the loss of the ability of the snow retainer to perform its functions, the destruction of the roof itself is also possible.

Installation of snow retainers on metal tiles: instructions and useful tips.

installation of snow retainers on metal tiles begins with the installation of brackets. At a distance of at least 300 mm from the side cut of the roof, holes are drilled for the first bracket. To mark the attachment points, the bracket is placed on the metal tile in such a way that its upper end rests on the cut of the previous row of stamped tiles. At the same time, under the surface of the metal tile, the bars of the crate should be located, which will take on the entire load;
a waterproofing gasket of 7 mm is applied to the upper hole, and 14 mm to the lower hole. The difference in the height of the gaskets allows you to compensate for the height difference that occurs due to the profile of the metal tile;
the bracket is installed and screwed;
at a distance of no more than 1100 mm the second bracket is attached in the same way, and so on;
a snow retention pipe is threaded into the holes of the brackets. The maximum extension of the free end from the outer bracket should not exceed 300 mm;
if it is necessary to increase the length of the pipe, they are interconnected and fixed with metal screws;
side cuts of pipes are sealed. This is done either by flattening the ends, or by installing sealed plugs.

mounting brackets

CAREFULLY!

It must be understood that the installation of snow retainers on metal tiles in some cases may void the manufacturer's warranty. Therefore, you should familiarize yourself with the warranty conditions in advance and use only snow retention kits recommended by the manufacturer for work.

Lattice snow retainers are attached in the same way.

Installing the corner snow guard

A corner snow retainer is placed above the bearing wall, where mechanical strength roofing is maximum. In practice, this is approximately corresponds to the second or third wave of metal tiles.

The width of the corner corresponds to the length of one row of tiles. Its upper face will be considered the one that forms a right angle to the plane of the roof.

Having installed the corner in a row of tiles, it is fixed with self-tapping screws. The main load will fall on the upper edge of the corner, so self-tapping screws 50-70 mm long are used for its fastening. self-tapping screws great length are necessary for reliable fixation to the wooden crate located directly under the metal tile.

The lower edge of the corner can be fastened with self-tapping screws of a shorter length. There are no such high loads, plus the distance to the crate is large and it is necessary to attach only to the sheet of metal.

installation of corner snow guards

Installation of tow systems for snow retention

Rope (point) are distributed evenly throughout the entire roof surface. The scheme of their placement is calculated in each case individually, since it is influenced by the design features of the roof.

Self-tapping screws are used to fasten the yokes. Sheets of metal tiles do not have sufficient strength to hold point snow retainers. Therefore, in the places of their attachment to the crate, they additionally impose wooden bars , compensating for the height difference in the profile of the metal tile.

drag protection systems

Advantages and disadvantages

The advantages of such systems include high efficiency at minimum cost. Even the simplest options can save people passing under the walls and cars standing there from icicles and snow avalanches.

The disadvantages include only the risk of losing the guarantee of the manufacturer of metal tiles. In addition, the installation of additional equipment leads to the risk of damage protective coating roofing material.

The simplicity of the design of snow retention systems does not prevent them from successfully coping with the task of preventing snow from falling off the roof and the formation of icicles. The same feature allows you to independently install such protection even for people without experience in construction.

Useful video

We present you a video about self installation snow retainers:

Snow guard- this is a structure that holds the snow mass on the roof, preventing it from spontaneously descending. It is very important to lay the installation of snow retainers at the initial stage of designing the entire roofing pie.

The absence of such barriers can provoke damage to the drainage system, windows, balconies, cars standing next to the house, and even lead to tragic consequences if people are nearby. That is why we strongly recommend installing snow guards immediately after installing the metal tile.

The following are on the market types of snow guards:

Tubular
lattice
Corner
Snow stops, sometimes also called hooks

Corner and snow stops can't detain a large number of snow, so they are recommended to be installed in areas where snow cover is not abundant. They are attached to a metal sheet, not to a crate, and in the event of a large amount of snow coming off, such a snow retainer can be torn out along with part roofing.

Lattice snow retainers, on the contrary, can withstand a serious load. Their minus lies in the fact that they do not allow the snow to come off in parts, but hold the entire volume at the same time, thereby the load on the roofing pie and the roof increases greatly, and this in turn has Negative influence for the durability of the entire structure.

The most popular type of snow retainers is tubular. On the face of it simple design consisting of their brackets and horizontal pipes. This type of barrier can be used on any roof with any roof covering. Its main function is to initially hold and gradually pass snow between the pipes, thereby reducing the load on the roof and minimizing the danger to humans.

Installation of snow guards on metal roofing

Snow guards can be installed in several rows: from 1 to 5. It depends on the length of the slope and the snow cover in a particular region.

Below is a table by which you can calculate the number of rows of snow retainer.

snow area	1		2		3		4		5		6		7		8
Distance between brackets, mm	800	1200	800	1200	800	1200	800	1200	800	1200	800	1200	800	1200	800	1200
Roof pitch
Less than 15	37,7	27,1	25,2	18,3	16,8	12,2	12,6	9,1	9,4	6,9	7,5	5,5	6,3	4,6	5,4	3,9
15-25	23,1	16,8	15,4	11,2	10,3	7,5	7,7	5,6	5,8	4,2	4,6	3,4	3,9	2,8	3,3	2,4
26-37	16,2	11,8	10,8	7,9	7,2	5,2	5,4	3,9	4,1	3,0	3,2	2,4	2,7	2,0	2,3	1,7
38-45	13,8	10,0	9,2	6,7	6,1	4,5	4,6	3,3	3,5	2,5	2,8	2,0	2,3	1,7	2,0	1,4
46-55	11,9	8,7	7,9	5,8	5,3	3,9	4,0	2,9	3,0	2,2	2,4	1,7	2,0	1,4	1,7	1,2

Based on the table and figure, we correlate the angle of inclination of the roof and the snow area and determine what is the maximum length of the slope for one row of snow retainers. If the value of the slope length turned out to be greater than the actual length of your slope, then more than one row of snow retainers is enough. If less, then 2 rows are needed. If it is less than 2 times, then 3 rows of snow retainers are required, etc.

In construction sites located on the borders of snowy areas, it is recommended to install snow guards based on the area with a greater snow load.

Snow guards must be installed:

continuously
along the entire roof line in one level and over protruding elements

The following tools are required for installing snow guards:

level
screwdriver
jigsaw

Attention! The use of a grinder is strictly not recommended, so as not to damage the polymer coating.

For achievement right size the entire structure of the snow retainers, the pipes can be joined together. For this, a crimp is provided at the end. From above it must be fixed bolted connection M8.

It is recommended to use a continuous crate in the installation areas roofing elements security (SNiP II-26-76 "Roofs"). We advise you to consider the installation of snow retainers at the stage of calculating the construction project.

Complete set of snow retainer for metal tiles

Installation of snow retainers on the rebate

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Installation of snow retainers on metal tiles - step by step instructions

1. Mark the location of the snow retainer on the metal tile next to the cornice at the level of the bearing wall and the place where you need to make holes for fasteners. The bracket is mounted strictly at the bottom of the wave. The distance between the last bracket and the edge of the pipe must not exceed 300 mm.

2. Drill holes with a metal drill exclusively in the metal tile, without affecting the crate.

4. Fix the bracket by tightening the screws. The maximum allowable step between the snow retainer supports is 900 mm.

5. Insert the pipes into the corresponding holes in the supports.

6. Combine the pipes along the entire length of the slope and fix with an M8 bolted connection.

Installation of snow retainers on a seam roof

1. Outline the location of the structure on the roof near the eaves at the level of the load-bearing wall and the place where it is necessary to put the brackets for fastenings. The bracket is mounted to the seam connection. The distance between the last support and the edge of the pipe must not exceed 300 mm.

3. Insert the pipes into the corresponding holes in the supports.

4. Combine the pipes along the length of the roof and fix with M8 bolts.

Video installation instructions

When designing a roof, attention should be paid not only to the appearance, cost and functionality of the roofing, but also to think about safe operation. Snow guards and other roof safety elements are necessary and have a very important function. The fastening of such structures will allow the roof to remain reliable and durable and ensure the safety of all residents of the house.

The weight of snow masses can be much greater than the weight of the roof itself, so precipitation loads are a serious problem that should be addressed even when making foundation calculations.

The safety of the roof directly depends on the snow mass that falls on it. It is difficult to predict how it will be distributed over the roof. It all depends on the slope of the roof, wind direction, etc. When calculating the metal tile on the roof, the load of snow masses should be taken into account first of all.

Roof snow load calculation

To make this calculation, you need a special formula:

Q - snow load
G is the weight of snow on a flat roof, which is determined from the table
S - correction factor depending on the angle of the roof:

> 25° - 1
If 25-60° - 0.7
More than 60 ° - the snow load is not taken into account, since snow with such an inclination will not be able to linger on the roof.

How to determine G? This information is found in tables and maps of snow cover zones on the territory of the Russian Federation.

The maximum length of the slope when installing 1 row of snow guards

Functions of snow retention systems

Prevention of unexpected descent of ice and snow deposits from the roof
Easier roof snow removal
Roof protection from strong winds when sheets of tiles can come off
Protection of drains from clogging with snow, which, when turned into ice, can break the pipe
Prevention of facade deformation by rolling snow and falling icicles

The main types of snow retention systems

Usually at the heart of such snow holders lies a pipe installed along the roof. On the metal tile, the tubes are fixed where the connection of the roof and the bearing wall passes.

Such structures cannot be attached to the cornice strip for metal tiles, as the entire system may collapse.

If there is an attic in the house, the tubular system must also be installed above its window openings. A sufficient distance from the edge of the roof is 40-50 cm, i.e. approximately where 3-4 tiles go.

To make a choice, you can choose universal models that fit both delays.

Due to the fact that the gratings are quite high, they demonstrate their safety both in winter and in summer, when it is necessary to carry out roofing work. From a possible fall, both materials and tools, as well as workers, will be saved.

They act as a thin sheet of steel, which is coated with a polymer material that prevents corrosion. Due to their simple design, they are the most inexpensive option for protecting against snow rolling off the roof.

Corner systems can be found in absolutely any color, which makes it easy to match them to the tiles.

Fastening corner snow retainers to metal tiles is carried out using self-tapping screws and ordinary corners. Protective systems are attached to the upper wave of the sheet.

The yokes are not a separate snow-retaining structure, as these are additional elements.

You can use yokes with any of the above snow retainers.

In the process of installing snow retainers on metal tiles, the yokes must be evenly attached to all roof slopes, given that their efficiency is low and they can only hold the lower layer of snow.

It makes no sense to use yokes as the only system for retaining snow deposits.

This is the oldest system for retaining ice and snow. The first logs on the roof began to be used on Bavarian and Alpine houses, but even today this design does not lose its relevance.

The advantage of log snow retainers is their reliability, since a large pipe not only holds snow well over its entire area, but also withstands significant loads.

Modern log snow retainers are made not of wood, but of metal pipes with a diameter of 140 mm. The supporting structure for such systems is usually made of steel sheets.

When to Install Snow Guards

The most optimal time for installing snow retention systems is the arrangement or repair of the roof.

It is best to choose suitable retaining structures together with the type of roof. In this case, the choice should be based on factors such as climatic features of the area and features of the roof.

If the roof is soft, then point snow retainers or snow stoppers are most often installed. This system is a narrow steel strip, bent at the end into a triangle. To make a snow stopper, you need galvanized steel or powder-coated metal.

Installation should be done when the roof material is being laid, attaching the snow stoppers to the base and covering the fixing point with another roofing sheet.

If such snow retainers are already mounted on a finished roof, then rubber seals should be used to avoid leaks in the future.

If the winters are long and snowy, then the snow retention system should be as effective as possible. When snow is a rarity or it always has time to melt before the next precipitation, then you can pick up cheap, but at the same time effective corner structures or, as they are also called, barriers
With heavy snowfalls, mesh and tubular snow retainers will be the best option, which will solve the problem not only with snow and icicles, but will also be convenient when dumping snow and ice deposits from the roof
It is important to remember that it is necessary to clean not only the roof from adhering ice and snow, but snow retention devices, because a lot of ice accumulates on them, which prevents normal snowmelt

Before installing snow retainers on the roof of the metal tile, install other elements. It is obligatory to carry out the installation of the ridge of the metal tile. Because it is a significant element of the roof, which provides its ventilation.

Installation of roof windows in metal tiles must be carried out before installing the ridge. Improper installation or poor waterproofing of such windows will negate all efforts to build a roof. Undertaking the installation of skylights is better for those who already have experience in construction work, and only if the instructions and rules set out here are observed.

We can say that snow retention systems for roofing are a very practical and necessary element. They protect people and cars from falling icicles and snowballs, while maintaining all the intended aesthetics of the roof.

Video about installing snow retainers on metal tiles

Video instruction on snow guards for metal tiles, how to make the right choice and how to install them on the roof.
Comparison of tubular snow guards from different manufacturers

Installation of tubular-type snow retainers on metal tiles

How to install snow retainers on metal tiles - rules for mounting on the roof

The main requirements that apply to a metal roof are aesthetics, strength, durability and safety. However, during heavy snowfalls, the reliability of any roof is seriously tested, and not every roof can withstand such an examination.

The total mass of snow that accumulates on the roof during such precipitation can reach many tons, many times exceeding the weight of the roof structure itself. This exposes the safety of the roof to a big problem, and therefore, readiness for such a snow load should be taken care of in advance.

In addition to the severity of precipitation itself, the problem is aggravated by the fact that the distribution of snow mass on the roof is unpredictable, and for this reason, the accumulation of snow in separate sections may be especially large. Much here depends on the direction of the wind, the angle of the roof and other factors.

The dependence of the snow load on the slope of the roof slope

Naturally, the greater the angle of inclination of the roof, the less likely it is that large snow masses will accumulate on it. In particular, if this angle exceeds 60°, then the snow on the roof practically does not linger, almost completely flowing down.

At average roof slopes, in the range of 25-60°, some of the snow lingers on the roof and can create certain problems. If the slope of the roof is less than 25 °, then almost the entire mass of snow that has fallen on the roof remains on it. An even more depressing situation can arise in situations where flat roofs when there is no snow runoff.

There are special tables that allow you to calculate the mass of snow depending on the angle of the roof. These tables are used for certain construction calculations, in particular when arranging snow-retaining roofing systems.

Why install snow retainers

The main purposes of snow-retaining structures for metal roofing

When installing snow retainers on a metal roof, several goals are pursued:

Prevent sudden descent from the roof of ice and snow masses.
Simplify the cleaning of the roof from snow.
Protect the roof during strong winds when tearing of roofing sheets is possible.
Protect facade structures from damage by rolling snow masses and falling icicles.
Prevent clogging downpipes snow and their rupture during icing.

For these reasons, the installation of snow retainers on metal tiles in areas that are subject to frequent and heavy snowfalls is very difficult. importance to protect both the roof itself and other structures in the building.

The main types of snow retainers

Currently, there are many varieties of snow-retaining structures, each of which has its own advantages and disadvantages.

Tubular. They are based on a pipe that stretches along the roof. At the same time, the snow retainers are fastened to the metal tile at the junctions of the roof with the bearing wall. This type snow retention systems refers to structures that cut layers of snow into several parts. For roofs with a very long slope, such snow cutters for metal tiles are installed in several rows - in a checkerboard pattern or butt-to-butt. They must not be fixed to the eaves on the roof, as this can lead to the destruction of the entire structure.
lattice. Such snow retainers are most efficient, which explains their demand. They are divided into ordinary and so-called "royal": the latter have a more complex design to manufacture, but the principle of operation for both is the same. Lattice systems not only serve as protection against falling snow masses and fragments of tiles, but also protect people working on the roof, their tools and materials from falling.
Corner. Usually they are triangular-curved steel sheets coated with anti-corrosion polymer coated. This is the cheapest option for snow-retaining structures, the installation of which is very simple. When choosing this option, the installation of snow retainers on the metal tile is carried out using ordinary corners and self-tapping screws.
log cabins. This is the oldest type of snow retention systems, at the same time, it is quite efficient. Logs have decent dimensions, and therefore are able to reliably withstand large snow loads. Modern varieties such structures are not made of wood, but of metal pipes with a diameter of 14 centimeters. The support for them is usually made of steel sheets. See also: "What types of snow retainers for metal tiles are better to use."

In addition to any type of snow retainers, snow retainers can be used to increase their effectiveness. It does not make sense to use them separately, since their practicality in this case is low.

To make the right choice in favor of one or another option, you should study their pros and cons before attaching snow retainers to the metal tile. In particular, the advantage of tubular snow retainers is their high reliability; the disadvantage is the need to put them around the entire perimeter of the roof. Lattice systems are effective not only against the fall of large masses of snow, but also as a protective structure for workers on the roof. At the same time, their disadvantage is that they can sag under the influence of too large snow masses. Corner snow guards are the cheapest option, but their efficiency is lower than other systems.

Installation of snow retainers on a metal roof

Snow-retaining structures are usually produced in ready-made, and in order to find out how to properly install the snow retainer on the metal tile, you should first of all read the installation manual in detail. This is not difficult to do, since all manufacturers of such products include instructions for installing snow retainers on metal tiles with their models.

The best time to install is during repairs or installation work on the roof, together with which a snow-retaining structure is installed.

In addition to the instructions from the manufacturer, you should pay attention to the general advice of experts on how to properly mount snow retainers on metal tiles:

For those regions where winters are frosty and snowy, snow-retaining structures should be as effective as possible. If snow in the area is rare, you can get by with relatively cheap and simple options.
When installing snow retention systems on a finished roof, rubber seals must be used to avoid future leaks.
Prior to the installation of snow retainers on metal tiles, the instruction prescribes the installation of skylights, ridge structures and other necessary elements.
It is advisable that the installation be carried out by workers with sufficient experience in such work.

As for the rules for the operation of snow retention systems, it should be remembered that it is important to clean them from ice and snow masses along with the roof itself. Otherwise, a large amount of ice deposits will accumulate on them, preventing the efficient operation of these structures and the normal convergence of snow.

Installation of snow guards

Take the test in 2 minutes and find out the cost of installing turnkey snow guards and the implementation time

In this article, we will tell you how to properly install snow retainers on metal tiles and corrugated board, show the main installation steps and explain the main mistakes when self-assembly snow retainers.

Installation of snow retainers - price from 300 rubles / m. linear

The price usually depends on several factors - the height of the building, the roofing material, the difficulty of access to the roof, etc. To clarify the cost of work, call us at the phone number indicated on the website. If necessary, you can invite our measurer (departure of the measurer - free of charge).

Why do you need a snow guard? Installing snow retainers on roof surfaces helps protect against damage that can be caused by snow and ice falling from the roof. The principle of operation of tubular snow retainers is that they hold back the bulk of the snow from an avalanche, passing it in small portions that are not capable of causing harm. It is especially important to install snow guards over footpaths, crowded places, parking lots and traffic areas.

Installation instructions for snow guards:

Step 1: Determine the installation location.

Usually, the installation of snow retainers is carried out in the area of the first or second wave of the metal tile from the eaves. The main rule that should be followed when determining the installation location is that snow retainers must be located above the load-bearing wall, for uniform distribution loads. Snow guards can be installed selectively - where the fall of snow layers is not desirable, or along the entire perimeter of the roof.

Step 2: Installation of fasteners (supports) of the snow retainer.
Included with the snow retainer are 4 supports, with which they are attached to the roof. Correct installation supports - the main stage in the installation of snow retainers, on which the service life of roof safety elements depends. The installation step should not exceed 70 cm. The supports are mounted on the roof with the help of hardware (included in the kit), 2 hardware per 1 support, while a prerequisite for reliable fastening of the supports is the penetration of hardware into the rafters or roof lathing. Otherwise, when the snow melts, the snow retainers will not withstand the load and will come off with the snow.

Step 3: Insert the snow retainer tubes into the supports.

After the snow retainer supports are installed, tubes are inserted into them. The snow retainer tubes are interconnected and extended to the desired length, the junction of the two tubes is fixed with a self-tapping screw. The distance from the extreme supports to the ends of the tubes should be 15-20 cm.

We insert the tubes into the snow retainer supports
We join the snow retainer tubes. We fix the junction with self-tapping screws.

Wondering how to install snow guards? - This work can be done with your own hands, but for an unprepared person, this will require a lot of time and effort. It is better to entrust this work to professionals. The specialists of the StroyKrovlya company will perform the installation of snow retainers quickly and efficiently at low prices.

Snow guards for metal tiles: purpose, types, installation

What are snow retainers and why are they needed?

The use of snow blowers is directly related to the climate. Why install elements that hold snow off the roof if the winter temperature does not drop below zero. In other regions, all roofs of residential buildings must be equipped with snow retention systems, regardless of the type of roof. In Western Europe, without the presence of these details on the slopes, the house may not be accepted for operation.

Advantages of using snow retainers for a metal roof

Installing snow retainers on a roof made of metal has many advantages, in addition to the fact that bright catchy elements are its undoubted decoration, they also:

do not allow unplanned gathering of mass of snow;
facilitate the operation of the roof;
protect against spontaneous sliding of elements during roof repairs;
eliminate clogging of drains;
protect the facade of the house from damage by ice blocks.

For each specific roof structure made of metal tiles, certain types of snow-catching systems are needed.

Snow retainers or snow retention systems on the market today are:

tubular;
lattice;
log;
corner;
tow ropes.

Snow retainers for metal tiles are of the type of checkpoint, holding snowdrifts on the roof and barrier.

Characteristics of snow guards for metal tiles, helping to make the right choice for your roof

Snow guards for metal tiles can be both throughput and barrier. Access models are made from a pipe or grate, detaining from a corner.

To choose the right snow retention system for your roof, and then understand how to install snow retention on metal tiles, you need to familiarize yourself with the following rules.

Do-it-yourself installation of elements with your own hands is not at all complicated, it is important to strictly follow the safety rules. But before choosing the type of system, deciding which one is better to use for a particular type of roof of your own house, you should calculate the snow load on it. The safety of the roof structure depends on the distribution of the load on it. It is impossible to guess how nature will scatter snow, but from the slope of the metal roof and the direction of the wind according to the formula Q \u003d G x S, it is possible to determine the snow load as accurately as possible. It is especially important to know this for those who install the roof and all its auxiliary elements with their own hands without the involvement of specialists. In this formula, the letter “Q” indicates the load from snow, “G” is the weight of the snow mass (average statistical data for the region are taken), “S” is a coefficient that depends on the angle of the roof. If the slope angle is below 25° "S" is equal to one, if below 60° "S" is equal to 0.7. Other values are not taken into account, if the roof is located at an angle greater than 60 °, then snow masses will not be able to linger on it.

Types of snow retainers for a roof made of metal

This type is also valued for the large height of the grate, which is an excellent trap for falling things and tools when servicing metal tiles in the summer.

There are snow retainers in the form of a log, this outdated model, which appeared on the roofs of alpine chalets in past centuries, is rarely used today, mainly in order to withstand style features in the architectural appearance. Today, tubular snow retainers for metal tiles are used, made of pipes with a diameter of 14 mm and steel supports. Tubular-type snow guards are widely used for metal tiles, because they are reliable, efficient, and easy to install with your own hands.

The main points of installing snow retainers on metal tiles

A rubber or paronite gasket is installed under the self-tapping screw, which secures the support of the snow retainer that falls into the middle of the wave of the metal tile sheet.

When installing snow retainers on metal tiles, it should be remembered that roof ladders, catwalks left on the roof after servicing the roof, chimney, and antenna can perform their function. The installation of snow retainers on metal tiles is carried out taking into account these details.

Modern complex, original roofs made of metal tiles without snow retainers are unreasonable from an economic point of view. These simple devices help keep the roof in its original form, protect gutters from destruction, and prevent premature destruction of the blind areas of the house from the fall of ice blocks.

The roof is the main protection of the house, so you do not need to skimp on its maintenance and improvement. The installation of an anti-icing system, which includes autonomous heating of the roof and gutters, will not be superfluous to the snow protection structures. Such a roof will serve for a long time, reliably covering the house from aggressive environmental influences. In conclusion, it is worth noting that any modern roof structures, from a simple weather vane to a complex system of protection from atmospheric precipitation, are an excellent decoration, a sign of wealth and good taste.

The snow that evenly covers the roof gradually thaws as a result of exposure to heat from the roof, after which it freezes from cold air and turns into an ice mass. Falling snow and ice are dangerous for people below. To avoid the convergence of the snow mass from the roof, as well as the fall of any objects, special structures are used, which are called snow retainers.

Why do we need snow guards on a metal roof and what functions do they perform

The purpose of snow-retaining systems is not only to ensure the safety of passers-by under the roof of a particular building: snow catchers reduce the likelihood of mechanical damage to the roofing material, avoid the appearance of small cracks and scratches on it, and exclude sagging and deformation of the roof under the influence of heavy snow mass.

Of particular importance is the equipment with snow retainers metal roofs, which are made of metal tiles, corrugated board, etc. In addition, snow stops in without fail should be installed on multi-level roofs, as well as under skylights. For the climate middle lane Russia on one running meter protective structure can accumulate about 900 kg of snow mass.

Snow retainers help hold snow on the roof and prevent its avalanche-like convergence

Snow retention systems may have different names, due to the performance of these devices for different functions:

Snow barriers. They are designed to completely hold the snow layer on the roof. In this case, even a partial exit is unacceptable. As for melting, it happens naturally.
Snow cutters, the purpose of which is to cut the layer of snow into smaller pieces. As a result, the energy of the snow layer at the moment of falling will be much less than when the mass converges as a whole. Thus, the safety of being under the roof is ensured.

Snow load calculation

To exclude damage to the roof structure during heavy rainfall, the necessary calculations are performed even at the stage of creating a roof project. The average weight of snow can be taken equal to 100 kg/m³, and for wet precipitation - 300 kg/m³. With these values, you can easily calculate the snow load. However, this indicator can be more accurately determined using a special regional map. It is taken as a basis for calculating design standards.

Using a regional map, you can determine the thickness of the snow cover for a particular region

The snow load is calculated by the formula S=S g *μ, where S is the snow pressure per 1 m² of the roof, S g is the normative snow load for a particular region, μ is a coefficient that depends on the angle of the roof:

μ=1 with a roof slope of less than 25˚;
μ=0.7 if the roof has a slope of 25–60˚;
with a slope of more than 60˚, the snow load is not taken into account (μ=0).

It is necessary to pay attention to the windward side of the house, although the level of snow there will be less than on the leeward side.

The windward side is the one from which the wind blows, the lee side is the one on which it blows.

The main types of snow retention systems

Roof railings that hold back snow can be quite different. The difference lies both in shape, size and materials, as well as in reliability. First of all, the choice of one or another design depends on the amount of snow that it should prevent.

Tubular

The system is made in the form of tubular elements that go into the holes of the holders with subsequent installation on the roof surface. The amount of snow that such a structure can withstand directly depends on the distance of the elements from each other. In addition, an important role is played by the dimensions of the snow catcher, namely the parameters of the pipe - length and diameter. The advantage of this design is the ability to increase the length and snow load by installing additional elements fasteners and pipes.

The design of tubular snow guards allows you to increase their total length and, as a result, the snow load by installing additional elements

Today, when installing tubular snow retention systems, a galvanized structure, painted in the color of the roof, is often used, which is characterized by increased corrosion resistance.

lattice

Latticed roof railings are similar in design to a ladder laid on edge and fixed across the roof. By analogy with tubular elements, they are also easy to strengthen or lengthen. Structures in the form of gratings and pipes are among the most reliable and versatile. They can be installed on roofs made of sheet roofing materials or natural tiles. Grid Snow Throwers are distinguished by their efficiency due to the presence of holes for snow melting and high bearing capacity.

Snow guards are different high efficiency thanks to its mesh construction

Corner

corner protective structures equip those roofs that are characterized by the accumulation of snow in small volumes, i.e., covered with corrugated board or metal tiles. These elements are made of the same material as the roof. The installation of the system is carried out directly to the roof covering. The installation is carried out along the ridge, while the elements are arranged in rows in a checkerboard pattern. The gap between the rows should be 0.5–1 m. Corner snowcatchers are not designed to hold snow in large volumes, so this design is not very durable. It is best to use them in regions with little snow.

Corner snow guards are best used in regions with little snow.

Rope devices are mostly designed for additional snow retention. They are used in combination with lattice and tubular systems, as well as on low-angle roofs covered with soft materials. As a rule, snow is already delayed on the latter due to the rough surface. If the roof has a small angle of inclination, then the snowfall is unlikely. At the same time, in order to be safe, they mount point yokes in a checkerboard pattern with a gap of 50 cm from each other.

Bowels are installed on roofs with a small angle of inclination or covered with soft roofing materials.

It should also be taken into account that the yokes are installed only during the installation of the roof. These elements are made in the form of a triangle and a long plate, which is located under the roofing material and is attached to the crate. It is laid on top soft material, which hides the mounting location. As a result, the roof has complete protection against possible leaks.

Logs for snow retention are used quite rarely. They can be found, for example, on wooden roofs. In this case, the logs are mounted on special hooks that are attached to the crate or to roof structure. The thicker the tree trunk, the more snow it can hold. Above the roof, the log is placed at a height of 2–3 cm. This ensures unhindered snowfall during melting. The rest of the snow mass lingers on the roof until it completely melts.

Logs are mounted by means of special elements in the form of hooks, which are attached to the crate or truss structure.

Installation of snow protection on metal roofing

Installing a snow retention system is not so much complicated as it requires attention and care, as well as compliance with certain rules.

Rules for installing snow catchers for metal tiles

For correct selection and installation of the structure, it is necessary to figure out how it is fixed on the roof from metal tiles. There are the following recommendations:

The device of tubular systems is carried out at the junction of the roof with bearing element buildings.
It is unacceptable to mount pipes to overhang otherwise there is a risk of deformation and destruction roofing system.
Pipe fastening must be done in a checkerboard pattern or end-to-end.
The first row of the snow retention system must be mounted 50 cm from the edge of the roof.
Longitudinal (tubular, lattice and corner) snow retainers are installed in the area of the eaves, and point ones - along the roof slope.

If the length of the roof slope exceeds 5.5 m, experts recommend installing snow catchment systems in several rows, leaving a gap between each of them of 2–3 m.

Video: rules for installing snow retention systems

Snow retainer device

Snow retention systems trap accumulated snow and separate it into pieces. In addition, there is no need to mount elements around the perimeter of the entire roof. Installation is carried out in those places where a large snow mass accumulates in winter. It is also worth considering that modern snow-retaining systems are perfectly combined with the aesthetics of the roof and do not spoil it in any way, since they are usually matched exactly to the color of the finish coat. Thus, you can find the most suitable elements for almost any building. When installing roofing fences at the stage of building a house and a roof, less financial and labor costs will be required.

Mounting the snow retainer to the metal tile

After choosing the required type of snow retainer, they begin to prepare tools and materials. Their list, regardless of the type of construction, will be almost the same:

For cutting material, the use of a grinder is undesirable. This is explained by the fact that snow retention systems are made of metal and coated with polymers. During cutting with a power tool, the coating is melted and destroyed, which subsequently leads to the formation of corrosion and a decrease in the strength of the structure.

Fastening tubular systems

Snow catchers of tubular type for metal roofing are supplied as a set consisting of the following items:

The snow retention structure is fastened as follows:

Install brackets. To do this, stepping back 30 cm from the side cut of the roof, holes are drilled for mounting the first bracket, while its upper end should rest against the cut of the previous row of tiled shapes.
Install waterproofing pads: 7 mm on the top hole, 14 mm on the bottom hole. This difference compensates for the difference in height, which occurs due to the profile characteristic of the metal tile.

Waterproofing pads allow you to compensate for the difference in height due to the profile of the metal tile
Mount the bracket.

A bracket is mounted in the holes made
Departing from the first element 1100 mm, the second bracket is fixed in the same way.
A pipe is threaded into the holes of the installed brackets. WITH the free end of the pipe must extend beyond the extreme fastener no more than 30 cm.

Pipes are inserted into the holes of the brackets
If it is necessary to lengthen the pipes, the elements are connected and fixed with metal screws.

To lengthen the pipe, the elements are spliced together
Pipe sections are sealed by flattening the ends or installing special plugs.

The ends of the pipes are sealed with plugs or by flattening

In the described way, the installation of lattice snow catchers is also carried out.

Video: installing tubular snow retainers

Mounting the corner snow guard

Corner snow retainers during fastening are placed above the load-bearing wall, where the highest mechanical strength of the roof is ensured.

In practice, the place of greatest strength corresponds, as a rule, to the second or third wave of metal tiles.

The width of the mounted corner is equal to the length of one row of roofing material. The top edge of the snow retention element is the one from which a right angle to the roof surface is formed. After installing the corner in a row of metal tiles, it is fixed with self-tapping screws. Most of the load will be applied to the top of the element, so fasteners 50–70 mm long should be used for mounting. This size allows you to securely fix the structure to the roof sheathing. Shorter self-tapping screws are suitable for fastening the lower edge of the corner. This is explained by the fact that there are no high loads.

When installing a corner snow retainer, longer self-tapping screws are used in the upper part, and shorter ones in the lower part.

Installation of tow systems of snow retention

Rope (point) snow retainers are evenly distributed over the roof. Their location depends on the specific roof structure. Fastening of elements is carried out by means of self-tapping screws. The sheets of roofing material are not strong enough to hold the yokes. Therefore, in those places where point elements will be installed, wooden bars are additionally placed.

The installation of bars compensates for the height difference in the tile profile.

The mounting part of the tow bar snow guards is located under the roofing material

The total cost of work

An important point in the arrangement of snow retainers is the final cost of the work. It depends, as a rule, on the dimensions of the elements of the chosen design, as well as on the type of roof and the manufacturer. Since tubular snowcatchers are the most popular, consider the cost of this particular design.

A set of elements 3 m long with all the necessary fasteners will cost an average of 1100–5500 rubles. In fact, the installation of snow retainers is not a very complicated process, so you can do it yourself. However, it should be borne in mind that improper installation of elements can lead to both damage to the roof and other negative consequences.

The cost of installing a snow retention system depends on the type of roof, the size and cost of the structure itself.

If the work is carried out by specialists, then the installation of one snow retainer will cost 2000–5000 rubles. This amount includes:

arrival at the site, drawing up a drawing, carrying out necessary measurements;
purchase of components;
system installation.