How to properly cover a roof with roofing felt? What is the best way to attach roofing felt to a wooden roof? How many layers of roofing felt to lay the roof on?

Roofing felt has long been the most popular waterproofing material in construction. It is used to insulate a variety of building elements from moisture, from foundations and floors to walls and roofs. Using roofing felt and its modern varieties, you can install a horizontal soft roof, as well as cover a pitched roof.

It is important to know what material to choose, how to prepare the sheathing and how to secure the roofing material to the wooden pitched roof of your house. We will try to answer these questions in detail and also highlight important points, which will save you from mistakes.

In this article

Which roofs are best covered with roofing felt?

The roof serves to protect the house from precipitation, so the choice of roofing material should be approached very carefully. Ruberoid is widely used in the repair and installation of soft roofs, where it has proven itself to be inexpensive and comfortable material. It is often used in suburban construction, covering houses and utility rooms with it.

Ruberoid is placed on wooden base, which must be carefully prepared. This is done in order to avoid even the slightest deflection of the sheathing or solid wooden decking of the pitched roof. Unlike metal tiles or ondulin, roofing felt does not have tensile strength and requires a carefully prepared substrate.

In addition, it is necessary to take into account the maximum angles of inclination of the roof slopes when using this rather plastic material, especially when heated. IN winter time on an excessively flat roof, roofing felt will experience significant snow loads, exceeding its strength indicators. And on a too steep roof under straight lines sun rays As a result of heating, it can slip, making the fastening elements unreliable.

To ensure durability, roofing felt should be laid on a wooden roof when the slopes are inclined from 8 to 50 degrees. Before starting roofing work, it is necessary to check the condition of the sheathing or solid sheet substrate by performing a number of operations, namely:

choose dry material for the sheathing to avoid further deformation;
make sure that the gaps between the sheathing boards do not exceed 1.5 cm;
remove all irregularities, defects and protruding knots on the sheathing boards;
if this is repair work, then remove the old coating and fasteners;
in the case of laying a continuous sheet covering on a rough sheathing, make sure that the joints fit absolutely evenly;
make sure that the parts of the sheathing are rigid and immobile and that there are no deformations that could lead to rupture of the future roofing material roof.

It is important to remember that spending time on careful installation of the sheathing will further guarantee the durability and quality of the roof.

It is advisable to treat all parts and sheets of the sheathing with an antiseptic composition, and unedged boards level and remove bark. It is necessary to fasten the elements of the substrate by deepening the nails and screws to avoid breaking through the roofing material during installation.

Types of roofing felt for roofing

Ruberoid has long been used as a roofing covering. It is made using thick cardboard impregnated with bitumen, and now fiberglass. The use of refractory impregnation, polymers and a stronger base than cardboard significantly increased the strength and durability of the material, although it also increased its cost.

To increase the strength properties of roofing material, sprinkling with different mineral fractions is used. To prevent the material from sticking together in the roll, use a mixture of chalk and talc. Bitumen, which is part of roofing felt, does not tolerate temperature changes, and this affects the strength and ductility of the material. Therefore, manufacturers are taking a number of measures to improve the consumer properties of products. IN lately colored sprinkles are used, which significantly improve the presentation without loss of quality.

The important thing is that roofing felt using multi-colored granular materials absorbs less solar energy and, accordingly, heats up less.

We will consider existing species roofing material to help you select the most optimal product. It comes in the following types:

When choosing a material, you must be guided by financial capabilities and practicality considerations, because modern types Although roofing felts are more expensive, they also last much longer.

Rules for installation on a wooden roof

Before you begin roofing work, you need to select tools and fastening materials. Depending on how you will attach the strips of material, you will need the following tools and components:

a screwdriver and self-tapping screws with washers, which will ensure tight pressure of the lath or metal strip, as well as roofing felt to the substrate;
or roofing nails with washers or wide heads and a hammer;
roulette;
sharp knife or scissors for cutting roofing felt;
reliable stairs;
mastic and brushes or rollers;
drill, metal scissors or saw;
metal strip or slats equal in length to the elements of the roof slope;
work clothes, gloves and soft non-slip shoes.

Before starting work, the sheathing must be cleaned and the roof measured. Taking into account the overlap between the sheets, which should be at least 10 cm, it is necessary to cut the material and let it rest. If a single sheet is not enough for both roof slopes, then the bend along the ridge should be at least 30 cm.

In case of use wooden slats they need to be treated with compounds that prevent rotting. Before starting installation, you must ensure that safety regulations are followed.

Work must be carried out in dry and windless weather to avoid deformation or rupture of the roofing material.

For slopes with a slope of 30-50 degrees, you need to use at least two layers of material, while for a slope of less than 30 degrees, a three-layer coating is required.

The bottom layer on wooden roofs is laid with lining roofing material and fixed with mastic, carefully straightening it. It is preferable to lay this layer horizontally, starting from the bottom cut of the roof, with a bend of at least 10 cm. The overlap between the strips must be at least 10 cm, and where the sheets overlap, they must also be secured with mastic.

The top layer is laid vertical stripes with a bend at the edges and an overlap. It is finally secured with a metal strip or wooden slats using nails or self-tapping screws.

It is necessary to fasten the edges in a timely manner roofing sheets on gables and cornices so that the roofing material is not damaged by random gusts of wind.

Particular attention should be paid to the complicating elements of the roof and the number of layers at the junctions should be increased. Here you should apply mastic especially carefully. There are several other methods of laying the material, which are used depending on the configuration of the roofs, but the main thing here is the principle of maintaining the feasibility and durability of the roof.

Conclusion

We examined in detail the issues of moisture insulation of various types of roofs modern types flexible roofing, and also found out what types of materials there are. From needs and cash The choice of roofing material for the wooden roof of the house depends on the owner. The main task in roofing work should be to ensure the reliability and durability of the roof, especially under the varied weather conditions of our country, all year round.

Ruberoid is a waterproofing material made from cardboard impregnated with petroleum bitumen. Most often sold in rolls.

The use of roofing felt involves not only its use for flat roofs, but also for pitched roofs. In addition, roofing felt is an excellent waterproofing material for foundations and roofs (upper and lower layers). A similar method of covering a roof is.

Ruberoid, as a roofing material, is divided into 4 types:

Simple (glassine). The coating composition, which has a special coating, is applied to a cardboard base, which, in turn, is impregnated with bitumen;
Fused (rubumast). Unlike simple roofing felt, it is much easier in the process of work;
Ruberoid having a synthetic or fiberglass base. Service life reaches 12 years;
Fused (Eurorubberoid). New generation roofing based on bitumen-polymer materials. Practically not subject to rotting. Service life – up to 25 years.

When choosing roofing felt, it is important to know what this or that type of roofing material is and how to make a quality choice.

When choosing and purchasing roofing felt, you must pay attention close attention to an abbreviation consisting of a set of numbers and letters:

The first letter is the name of the material. “R” - roofing material;
The 2nd letter means purpose. “K” - roofing, “P” - lining;
The 3rd letter(s) will indicate the type of sprinkle. “K” - coarse-grained; “M” - fine-grained; "PP" - dusty; “H” - scaly;
Numbers from 300 to 400 will indicate the density of the cardboard (1 gram per 1 square meter).

To make it easier to understand, let’s give an example: RKK-400 will mean that this roofing material is a coarse-grained roofing material with a density of 400 g per square meter.

There are four types of material:

Tol. It is based on roofing cardboard impregnated with slate substrate or coal substrate. Sprinkled with stone chips on both sides. Universal use;
Rubemast has a fairly high viscosity of bitumen, which is applied to the underside of the cardboard. When laying, the bottom layer must be melted or dissolved;
Fiberglass ruberoid (steklomast). The base is not cardboard, but fiberglass. Universal application;
Euroroofing felt is a special built-up roofing material, the base of which consists of polyester or fiberglass, on which a layer of bitumen is applied polymer additives. It is laid by melting the bottom layer.

In order not to make a mistake in choosing a quality material, you should definitely pay attention to the certificate, which must contain GOST and the brand of the product. For example - RPPP GOST 10923-93.

The nuances necessary for the right choice roofing felt:

The roll must be smooth, the protrusion of the layers cannot exceed 1.5 cm;
Should not stick together;
No visible damage - folds, cracks, tears, etc.;
The impregnation must be in an even layer;
Each roll is packaged separately in paper 50 cm wide, which must be marked;
The GOST stamp must contain information about the manufacturer, technical specifications, batch number and year of production of the material.

How to lay roofing felt on the roof

In order to correctly and quickly lay roofing material on the roof, it is important to know the sequence of laying this roofing material:

Ruberoid is a rolled material. That is why, a few days before the work, the roofing felt is rolled out onto flat surface to allow it to straighten;
On flat areas of the roof, roofing material should be laid in 4 layers, and on steep sections - in 2 layers;
Before laying roofing felt, the surface must be prepared (must be dry and level);
Roofing work should be carried out in dry, calm weather;
The material is glued using cold or hot mastic, which is determined by the materials from which the roofing material was made;
You need to start work by priming the roof deck.

It is better to use ready-made primers. To make your own primer, you need to dissolve the bitumen in gasoline or kerosene.

After priming the underlayment, mastic is applied and only after that work on laying roofing felt begins.

How to lay roofing felt on a roof

Roofing felt is laid in several stages:

Prepare the surface thoroughly. Remove debris and, if particularly necessary, rinse and let dry (in bad weather, you can use a blowtorch);
Heat up the bitumen mastic, the consumption of which will depend entirely on how smooth the working surface is;
Prepare a primer and fill gaps, cracks and visible peelings;

It is important to know that when making a soil solution yourself, gasoline must be poured into hot bitumen. In no case the other way around, as this will lead to ignition.

Apply mastic. By fusing, the mastic is applied only to the edges of the roofing material. The thickness should not exceed 5 mm;
Ruberoid. The material is laid exclusively in the direction from bottom to top. If a burner is used in the work, then the roofing material must be laid so that when turned, the sheets overlap by 15-20 cm;
Slowly unwind the roll, heat it with a burner and press. The service life of the roof will depend on how well this stage of work is carried out;
Next, another layer of mastic is laid. All subsequent sheets of roofing material should be positioned perpendicular to those already laid;
Fold the edges of the material and secure with nails;
The last top layer of roofing material should have a coarse powder and, in the same way, fit quite tightly to the base. The joints are overlapped and the edges are secured with nails.

How to cover a garage roof with roofing felt

A garage roof, like any other, must be properly covered. The technology for laying roofing felt can be divided into several steps:

Prepare the surface;
Identify existing defects – peeling, cracks, holes;
Heat the bitumen;
Prepare a primer (the DIY method is described above);
Pour primer into cracks and crevices, let dry and level the roof with mastic;
Lay a lining layer of roofing material (it is possible that there will be several such layers) overlapping from bottom to top and fill it with mastic again (each layer must be filled);
Strengthen the edges with nails;
Place the top layer of material and secure the edges.

Video instructions on how to cover a garage roof with roofing felt

In order to properly cover a roof with roofing felt, it is necessary to take into account several points, which will be fully disclosed in the video below.

Roof felt roof repair

At the end of spring and beginning of autumn, that is, during the time when the rainy season ends or is about to begin, the roof covered with roofing felt must be inspected and defects identified.

Repair work will entirely depend on the quality and quantity of existing damage:

Cracks. If the cracks are small, then initially the roof must be cleaned of debris and dried thoroughly. Then cover with mastic and a layer of bitumen, the consumption of which, in this case, will not be more than 1.2 kg per 1 square meter;
Holes. Prepare the surface thoroughly, remove both debris and a layer of old mastic. Very small holes can simply be filled with putty;
The parapet may interfere with clearing the roof of debris, but getting it under the roofing carpet is unacceptable, as it will compromise the waterproofing and integrity of the base;
Minor damage. This problem can be solved by applying a patch made from the same roofing material as the roofing, and treating the edges with mastic.

If it turns out that the amount of mastic is more than necessary, the excess is leveled using a spatula in accordance with the thickness of the roofing material.

Through hole. When repairing this type of damage, an incision is made (cruciform) and the corners are bent to the sides. The resulting depression is processed and covered with two layers of roofing felt. One is glued to the roof, the previously bent corners are smeared with a layer of mastic and laid back on top of the first layer of roofing felt. Then the 2nd layer is laid, which is also covered with mastic.

To avoid peeling of the patches, the repaired roof area is fixed with bricks, boards or heavy objects to ensure complete adhesion and drying.

How to calculate roofing felt for a roof

The amount of material required depends on the angle of the roof slope. So, if the angle is 45 degrees, you will need only 1 layer of roofing felt, if from 20 to 40 degrees, then 2 layers will be required, and at an angle of 5-15 degrees, you will need to lay 4 layers of material.

To determine the amount of roofing felt, you need to know:

Roof area;
Amount of material per roll;
Required number of layers of roofing material.

It is worth noting that the average cost of material per 1 square meter with one layer of installation will be from 75 rubles. Two-layer installation can cost 130 rubles per square meter or more.

Roof waterproofing with roofing felt

Roof waterproofing using roofing felt is the most environmentally friendly option for its arrangement. Produced this type work in full compliance with all stages, which will prolong the operation of the roof:

Preparation. Primer wooden covering, preparation of roofing felt sheets. After the soil layer has completely dried, lay the roofing material;
Heat the bitumen (if necessary), apply a binder layer and lay sheets of roofing felt overlapping (10-20 cm);

If cold mastic is used at this stage, then there is no need to preheat it and, accordingly, the need for additional preparation disappears.

After laying the roofing material, all joints are heated to ensure better sealing of the seams;
For a small roof slope, experts recommend laying 3-4 layers of roofing felt, and for large slopes, 2 layers are sufficient.

How much does it cost to cover a roof with roofing felt?

To roughly calculate the cost of work, you need to know the amount of material for installation.

Do not forget that the minimum number of layers is two, which means the roof area must be multiplied by 2.
Provide a supply of material in case improper installation and the need for replacement.
Buying mastic or ingredients for making your own. On average, about 2 liters of mastic are used per 1 square meter.

If you need to cover a surface of 13 square meters:

13x2=26 (since there will be 2 layers of roofing material);
250 rubles x 2 = 500 rubles (250 rubles costs on average 1 roll of roofing material 15 m long);
Packaging 20 l bitumen mastic costs approximately 450 rubles. If you round the value and take 30 liters, then 30x2=60.
You will need 60 liters of mastic, which means 1350 rubles.

Approximate calculations showed that the approximate cost of the work (performed) will be 1850 rubles. These figures are very approximate, so calculations must be made based on accurately performed calculations.

Video

Laying roofing felt occurs in several stages, which are shown in the video below.

Covering the roof with roofing felt will not only protect your house, garage or any other structure from weather conditions, but will also guarantee savings in money and effort. Ruberoid – universal remedy, which is widely used by specialists. You can also cover the roof.

Ruberoid is a laminated plastic based on paper (roofing cardboard) and bitumen resin. Accordingly, it is a soft, flexible sheet (roll) material, quite durable, resistant to ultraviolet radiation, temperature changes, weather-resistant, lightweight and with good waterproofing and dielectric properties. As you can see, there are many advantages listed, so this article will tell you how to properly cover a roof with roofing felt for the construction of economical roofs and waterproofing (mainly foundations).

Disadvantage of bitumen the fact is that the cardboard base, although impregnated with fusible bitumen, can collapse over time or absorb moisture if protective layer broken. In addition, it is not resistant to puncture and tearing; the material is dark, which means it gets very hot from the sun (even though it is covered with a layer of refractory bitumen resin on top).

Cardboard on roofing material different brands has different densities, which determines its purpose. The length of the roll is 15 meters, and the weight and strength are different for everyone. Before covering the roof, roofing material in rolls must be rewound with the reverse side.

The letters in the abbreviation mean “P” - roofing material; "K" - for the roof of the roof.

The third letter is the type of top powder, for example:

“K” – coarse-grained
“P” – scaly
“M” – fine-grained

The numbers are the density of the cardboard; the higher it is, the stronger the roofing felt.

Coarse-grained roofing felts are always for the outer layer. The most powerful waterproofing is provided by built-up roofing material, which has a thick top layer and an additional bottom layer of special mastic. You can glue it using kerosene or white spirit, or by melting the bottom layer with a burner.

For the middle and lower layers of the roof it is necessary to use roofing felt of the RKP brand, for internal layers with the RKM marking.

How many layers of roofing felt should be laid?

To cover a roof with ordinary roofing felt, at least 2 layers are required

The number of layers of roofing felt depends on how long the roof is planned to be used, its slope and the material used. Where euroroofing felt can be laid in one layer, 2 layers of conventional roofing felt are required.

On slopes with a slope of 45 degrees to make a roof that will last for several years, roofing felt is laid at least 2 layers: a bedding layer without crumbs is glued onto the bitumen mastic, then a top layer with stone chips.

With a slope of 20-40 degrees and if the roof is needed to be more durable, for 10-15 years, 3 layers are laid. The two bottom ones are lined, the top one is filled with stone chips.

On roofs with a slight slope (up to 15 degrees) 4 sheets are laid, three interlining and finishing, they must be laid perpendicular to each other.

On flat roofs make 5 layers of roofing material, and everything is glued. Lay perpendicular to each other.

Preparing the roof surface

Important condition: your roof must be dry. You should not cover with roofing felt in the rain!

Ruberoid is laid on level base, rafters or support. All roofing work with roofing felt only in clear weather. If it rains, you can arrange a canopy and continue work, but only if the surface remains dry or is not damp from splashes, fog, high humidity air. Otherwise, the material simply will not stick.

If you need to cover a flat surface with roofing felt concrete roof (for example, from reinforced concrete floors), then a reinforced screed is made on top of the floor, 3-5 cm thick, with a slope (1 cm per linear meter) in one direction to facilitate snow removal or to the gutter. Gently apply heated or cold (see recommendations on the can) bitumen mastic onto the dry, cleaned screed with a brush or roller (option: pour a ladle of mastic and spread it with a mop). When it sets, you can glue the first layer of roofing felt.

If the slope is small, the sheathing needs to be solid (butt boards or plywood, chipboard), otherwise the snow can push through the canvas and the roofing material will begin to collapse. A slope of more than 30-40 degrees will allow you to make a non-continuous sheathing, but the gaps are maximum 30 mm.

To make a sheathing for a pitched roof, you need to insert a board from the attic between the trusses and, applying outside, nail it to the truss. They begin to make the sheathing from below, when the sheathing is slightly larger than the width of the roll, it is coated with mastic and a bedding layer of roofing felt is placed on it in parallel bottom edge roofs. Attached with slate nails. Then the next layer of sheathing is made, and so on.

Laying roofing felt on bitumen mastic

Preparation of mastic

Bitumen mastic is sold in stores (now there is no need to melt bitumen resin)

Bitumen mastic– ready for use, sold in jars, does not require melting. You can melt the bitumen resin, but this is inconvenient and traumatic. It’s easier to dilute the bitumen with gasoline to the consistency of jelly and season it with used engine oil (ask at the service station). The mastic will not crack, it will stick perfectly. The only peculiarity is that it is odorous and fire hazard until it dries.

The process of laying roofing felt

It is not necessary to glue roofing felt. But if the slope is small and the roof is being built in winter, sizing with mastic is required. It is convenient to fasten by pressing with a metal tape (steel or aluminum) or slats, in increments of 50 cm.

The overlap of the sheets depends on the slope of the roof. The greater the slope, the smaller it is (7-20 cm, respectively). The roof must be covered from bottom to top, laying the sheets overlapping and gluing, then water will not go into the seams. The panels are first cut into pieces of the required length.

Methods and technology for covering a roof with roofing felt

Panels across the slope. Laying on the roof from the eaves from bottom to top, the top row is placed on the bottom with an overlap of 10-20 cm. Water will not get into the seams.
Panels along the slope. The overlap on the side is made taking into account the wind, also 10-20 cm. Laying from the pediment (look at the wind rose, the wind should not tear off the layers!).
For the first layer across, and for the top one - along the slope.

Step by step instructions:

Usually, the first layer of roofing material is placed on the bitumen of the prepared base, with an overlap of 15-20 cm, parallel to the edge of the roof, their ends are wrapped under the edge of the roof, and secured with a batten.
Additionally secured with slate nails (every 50 cm). Coat with bitumen mastic, lay the next layer, overlapping over the ridge (its sheets are perpendicular to the first), the edges are also wrapped.
Bitumen is applied again and a finishing layer of roofing material is laid.
Each subsequent layer is laid with an offset of 1/3 or ½ sheet so that the seams of the top layer do not end up above the seams of the bottom: the first panel is folded onto the side of the fence or cut in half, the rest will move as a result.

Roofing felt should be laid with an overlap of 5-15 cm

For roofing onyou'll need a ladder, long enough to allow you to nail the sheathing boards to the highest part of the roof without any problems.

To roll out a roll of roofing felt on an almost vertical sheathing, it is hung on a hook or pipe, like a spool of thread. The hook is hooked onto the sheathing board and, moving it, the suspended roll is rolled out.

The last sheet must be attached from the outside, since it is thrown over the ridge. The second layer of roofing felt can be laid over the ridge, across the slope; for this you will need a ladder. For pitched roofs made of roofing felt, ridge elements are not used.

Laying built-up roofing felt

There is a film on the fused roofing felt on the heated side; when the heat is sufficient for gluing, it turns white and burns. The sheets cannot be overheated; they easily melt through.

The preparation of the base is the same.

Step-by-step instructions for laying built-up roofing felt

A roll of roofing felt is placed in front of you so that you can roll it forward and gluing it while walking along it.
Hold a burner in your hands, heating part of the surface of the roll and the mastic in front of it for 20-30 cm.
Then the heated sheet of roofing material with the burnt film (the adhesive base “boils”) is rolled out about half a turn and glued, trampled down, while all folds and swellings must be straightened.
It is better if the glued roofing material is rolled with a heavy roller. Then the next section warms up.
So gradually, warming up and rolling out, the entire roll is glued. It is important to roll and press the glued roofing material.
The second sheet is glued with an overlap (by 5 cm) after it has completely cooled and the first one has been glued.

Roofing felt has long been widely used not only as a waterproofing layer in general design roofs, but also as the main roofing material. Its use for roofing is especially relevant in cases where the need to create or repair a roof is very urgent, and the owner of the house is short on funds. It is also quite suitable for outbuildings that are invisible to the prying eye. In any case, if you have to resort to using such material specifically as the main roof, then the question arises - how to attach the roofing material to wooden roof and other basics.

Most often, gazebos, as well as outbuildings, are covered with this roofing. But, in fairness, it should be noted that high-quality roofing felt has no less service life than some modern roofing materials. However, how long it will be able to reliably protect the structure from external atmospheric influences will depend not only on the correct choice of coating, but also on compliance with the technology for laying it on a specific base.

Types of roofing material and areas of its application

The process of choosing this roofing material must be approached with the utmost responsibility, since there are many varieties of it on sale, and it is important to choose exactly the option that is ideal for laying on a wooden roof base.

Roofing felt can be made from roofing cardboard or fiberglass, which are impregnated with refractory bitumen on both sides. Many types of such rolled material can have a protective coating on the outside in the form of medium- or fine-grained abrasive chips.

Ruberoid different types has its own markings and its own operational characteristics, depending on which it can be used in one or another area of construction, as well as in different qualities, that is, as the main roof or only to create an additional one for it.

The main types of materials hidden under the term “roofing felt”

Let's look at a few various materials which are commonly called general concept"ruberoid":

Tol- this is a rolled material that has been used for a long time and has enjoyed wide popularity, but only due to the fact that there is a wide variety of waterproofing and roofing coatings in construction stores it simply wasn't there. It is interesting that the name itself, apparently with a certain amount of irony, was borrowed from the French language: the word “tôle” means sheet roofing iron.

Roofing felt is made on the basis of roofing cardboard, which is impregnated with tar slate or coal products, and is used as a waterproofing and roofing. However, compared to other rolled materials, which are referred to as “roofing felt”, roofing felt has significantly lower performance characteristics and durability, and is most often used when arranging temporary buildings that are not designed for a long period of use. Currently, manufacturers have almost completely abandoned the production of this material due to its impracticality - it has been replaced by more modern and durable analogues.

"Steklomast" It is made on the basis of high-strength fiberglass fabric or polyester fabric, which is impregnated on both sides with bitumen-polymer compounds. The outer side of this roofing may have a protective layer consisting of coarse mineral coating. Thanks to the qualities of these materials, the sheets of this waterproofing and roofing coating have high flexibility, which is not lost even at low temperatures.

The service life of this roll material, declared by the manufacturer, is usually about 15 years.

Prices for roofing material

roofing felt

"Rubemast" - This is a modified version of traditional roofing felt, characterized by modern production technology and improved characteristics. The basis for this material is roofing cardboard, which is impregnated with special bitumen mixed with mineral additives.

For sprinkling the outside of canvases it is used granite chips or quartz sand. Thanks to production innovations, the density of Rubemast is almost 5 times higher than that of conventional roofing felt.

"Eurorubberoid" It is made on the basis of fiberglass, which is impregnated with a mixture of bitumen and synthetic rubber. Rubber components significantly increase the waterproofing qualities of the material and make it more elastic. Therefore, “Euroruberoid” withstands low winter temperatures well, and its durability under conditions of constant use is 20–30 years.

The top mineral coating of the material not only serves to protect the lower layers from mechanical influences, but also performs decorative functions, since stone or sand chips of various colors can be used for it.

It should not be assumed that the name “Euroruberoid” means the imported production of the material. This is rather a “collective image”, which speaks more about the high quality of such roofing. And it can be produced here too: a clear confirmation of this is the widest range high quality roll materials TechnoNIKOL company.

Another version of roofing felt is its liquid variety, which is a polymer-bitumen composition (PBC) and is mainly used for waterproofing roofs. Used for application on concrete, wood and metal surfaces, as well as on old bitumen coatings during their repair.

To the benefits " liquid roofing felt"It can be attributed to the fact that after drying it forms a seamless monolithic coating that will reliably protect the roof from leaks.

The mixture has high adhesion to any surface and is applied in two to three layers, at intervals of one to two hours. Complete drying of the coating occurs within a day.

The advantages of all types of roofing felt include the versatility of the material, since it is suitable for covering roofs installed at different slopes and with various designs. It is not difficult to lay roofing felt yourself, since it is not particularly heavy and has good elasticity. When repairing a roof with a roofing felt roofing, you will not have to dismantle the entire covering - it will be enough to remove only the damaged area and then lay a new sheet.

Mineral coatings of roofing felt

A few words need to be said separately about the outer top coating of the material in order to give general idea about what he is. As is known, except smooth surface, roofing sheets can have four types protective coatings from mineral materials - these are coarse-grained, fine-grained, scaly and dusty.

Coarse coating is made from mineral stone chips, and granite is most often used for this purpose. Ruberoid having such a topping is considered universal, as it is suitable both for roofing and for waterproofing the roof or other elements of the building. But its main purpose, of course, is to create a high-quality roofing covering that is not afraid of external mechanical loads.

The outer coating of fine-grained coatings resembles coarse-grained ones. sandpaper, since it most often consists of quartz sand. This material option is suitable for both the outer layer of the roof and for laying under another roofing covering, as a basic waterproofing.

Features of roofing roofing material

Ruberoid is a waterproofing material made from cardboard impregnated with petroleum bitumen. Most often sold in rolls.

Photo of a roof made of roofing felt

Ruberoid, as a roofing material, is divided into 4 types:

Simple (glassine). The coating composition, which has a special coating, is applied to a cardboard base, which, in turn, is impregnated with bitumen;
Fused (rubumast). Unlike simple roofing felt, it is much easier in the process of work;
Ruberoid having a synthetic or fiberglass base. Service life reaches 12 years;
Fused (Eurorubberoid). New generation roofing based on bitumen-polymer materials. Practically not subject to rotting. Service life – up to 25 years.

When choosing roofing felt, it is important to know what this or that type of roofing material is and how to make a quality choice.

The image shows rolls of roofing felt

When choosing and purchasing roofing felt, you need to pay close attention to the abbreviation, consisting of a set of numbers and letters:

The first letter is the name of the material. “R” - roofing felt;
The 2nd letter means purpose. “K” - roofing, “P” - lining;
The 3rd letter(s) will indicate the type of sprinkle. “K” - coarse-grained; “M” - fine-grained; "PP" - dusty; “H” - scaly;
Numbers from 300 to 400 will indicate the density of the cardboard (1 gram per 1 square meter).

To make it easier to understand, let’s give an example: RKK-400 will mean that this roofing material is a coarse-grained roofing material with a density of 400 g per square meter.

There are four types of material:

Tol. It is based on roofing cardboard impregnated with slate substrate or coal substrate. Sprinkled with stone chips on both sides. Universal use;
Rubemast has a fairly high viscosity of bitumen, which is applied to the underside of the cardboard. When laying, the bottom layer must be melted or dissolved;
Fiberglass ruberoid (steklomast). The base is not cardboard, but fiberglass. Universal application;
Euroroofing material is a special built-up roofing material, the base of which consists of polyester or fiberglass, on which a layer of bitumen with polymer additives is applied. It is laid by melting the bottom layer.

Nuances necessary for the correct choice of roofing felt:

The roll must be smooth, the protrusion of the layers cannot exceed 1.5 cm;
Should not stick together;
No visible damage - folds, cracks, tears, etc.;
The impregnation must be in an even layer;
Each roll is packaged separately in paper 50 cm wide, which must be marked;
The GOST stamp must contain information about the manufacturer, technical specifications, batch number and year of production of the material.