Make a roof from roofing felt. We cover the roof with roofing felt. Roofing carpet on a concrete roof

Roofing felt has long been widely used not only as a waterproofing layer in the overall roof structure, 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 quite suitable for inconspicuous to a prying eye outbuildings. 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 a wooden roof and other bases.

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 right choice coating, but also on compliance with the technology of laying it on a specific base.

Types of roofing felt and areas of its application

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

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 outside protective coating 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 usually called general concept"ruberoid":

Tol- This roll material, which has been used for a long time and 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 French: The word "tôle" means roofing iron sheets.

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 coating. 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 roof covering may have protective layer, consisting of coarse mineral powder. Thanks to the qualities of these materials, the sheets of this waterproofing and roofing coating have high flexibility, which is not lost even when 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 the traditional roofing felt, differing modern technology production and improved characteristics. The basis for this material is roofing cardboard, which is impregnated with special bitumen mixed with mineral additives.

Granite chips or quartz sand are used to sprinkle the outside of the canvases. Thanks to production innovations, the density of Rubemast is almost 5 times higher than that of conventional roofing felt.

"Euroruberoid" 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” resists low winter temperatures well, and its durability under conditions of constant use is 20–30 years.

The top mineral coating of the material serves not only 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” that speaks more about high quality such roofing. And it can be produced here too: a clear confirmation of this is the widest range high-quality rolled materials from the 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 to concrete, wood and metal surfaces, as well as on old bitumen coatings during their repair.

The advantages of “liquid roofing felt” include 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 flooring under another roofing, as a basic waterproofing.

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

The use of roofing material involves not only its use for flat roofs, but also for slopes. In addition, roofing felt is excellent waterproofing material for foundation and roof (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 synthetic or fiberglass base. Service life reaches 12 years;
Fused (Euroruberoid). 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 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 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 with the choice 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.

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.

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 work, the roofing material is rolled out on a 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 felt 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. On how well it is carried out this stage the work will depend on the service life of the roof;
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;
Last upper layer The roofing material should have a coarse powder and, in the same way, fit tightly enough 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 (method self-cooking 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 depend entirely 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 is in this case will not amount to 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 material. 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

Quantity required material depends on the angle of the roof slope. So, if the angle is 45 degrees, you will need only 1 layer of roofing material, 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 felt.

It is worth noting that average cost material for 1 square meter with one layer of installation it will cost 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 wood covering, preparation of roofing felt sheets. After the soil layer has completely dried, lay the roofing material;
Warm up the bitumen (if necessary), apply a binder layer and lay sheets of roofing felt overlapping (10-20 cm);

If at this stage it will be used cold mastic, 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 seams;
For small roof slopes, experts recommend laying 3-4 layers of roofing material, 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 correct 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);
A package of 20 liters of 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 building from weather phenomena, but also guarantees savings in costs and effort. Ruberoid – universal remedy, which is widely used by specialists. You can also cover the roof.

1.
2.
3.
4.
5.
6.

Many developers country houses cannot afford to purchase high-quality but expensive roofing materials. That is why they are increasingly turning their attention to time-tested roofing felt. In addition, the service life of this roofing material is no less - 15 years.

In this article we will talk about how to cover a roof with roofing felt and how to avoid the most common mistakes.

How to cover a roof with roofing felt

Before proceeding directly to roofing work, it is necessary to calculate the possible loads on rafter system. If the value ends up being more than the current rafter system can withstand, then it must be strengthened. You can also try to recalculate the load for fewer layers of roofing material. But still, the first option is much more preferable, because the thickness is smaller roofing pie will negatively affect the durability and reliability of the roof.

Now you can move on to next stage works In addition to reliable rafters, the roof must have a properly created sheathing. To arrange it, it is recommended to use dry edged boards equal thickness (at least 30 cm). Thin boards will not be able to withstand various dynamic loads (rain, snow, wind), and therefore savings can cause the entire roof to become unusable.

The boards on the sheathing must be laid tightly enough so that there are no gaps. However, some builders leave a space of 10-15 cm between the individual boards. But still, it is better to avoid this method of installation, since a solid base is much more reliable and protects the roof from leaks and damage.

It is important to remember that in the process of calculating the amount of roofing felt, it is necessary to take into account side and butt overlaps of 10 cm. For a ridge, the overlap of roofing felt rolls can be 25 cm or more. If you lose sight of this nuance, you may end up with a shortage of material.

Do-it-yourself roofing felt roofing material

In order to properly cover the roof with roofing felt, it is necessary to remove all the filling from the sheets of material. This operation can be carried out mechanically, or you can clean the surface using diesel fuel. When laying a roofing material roofing material, it is necessary to take into account the angle of the roof slopes. So, if it is 15 degrees or more, then roofing material can be laid in two layers. For smaller roof slopes, it is necessary to lay the material in three layers - this will ensure greater reliability of the resulting roof.

To glue rolls of roofing felt together, you must use. Pure bitumen can also be used, but mastics behave better at low temperatures and have higher heat resistance.

How to properly prepare bitumen mastic yourself?

Observing everything technological processes By laying roofing felt roofing, you can achieve an extension of its service life.

That’s why it’s so important to prepare the mastic correctly:

After the roofing material is laid out on the roof, it is filled with a thick layer of the resulting mastic, which is sprinkled with coarse sand on top. This is necessary in order to strengthen the roof and extend its service life.

How to properly cover a roof with roofing felt

At first it may seem that such a lightweight material is easy enough to lay on the roof. But in fact, there are a number of nuances that are very important to take into account. For example, to lay roofing felt on a concrete roof, it is necessary that its surface is clean and dry and free of traces of vegetation and debris.

For proper installation of roofing felt, you can seek advice from specialists. They will undoubtedly tell you the order of work and help you carry out everything. necessary calculations. Roofing felt is laid in at least two layers. The first is called bedding. It can be placed without sprinkles. It is better to use modern euroruberoid as the second layer. It not only has better reliability, but is also easier to install. In most cases, such material is sold together with granite topping.

How to cover a roof with roofing felt - the main subtleties

It is necessary to coat the roof area with bitumen mastic. Then it is heated. Ruberoid is placed on top. A special roller is rolled over it. If you skip this stage of work, then airy areas may remain under the surface of the roof. This will lead in the future to moisture condensation in these voids and, as a result, to rupture of the material. High-quality roofing can only be ensured if there are no air pockets under the surface of the roofing material.

If the air is not removed even with the help of a roller, then you need to carefully pierce this place. After the air comes out from under the surface of the roofing material, it is necessary to press it tightly until bitumen mastic flows from the puncture.

The comfort in the house depends on how to cover the roof with roofing felt. That is why the following requirements are mandatory:

Ruberoid- This 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, many advantages are listed, so this article will tell you how to properly cover a roof with roofing felt for the device economical roofs and waterproofing (mainly foundations).

Disadvantage of bitumen The problem is that the cardboard base, although impregnated with fusible bitumen, can collapse over time or absorb moisture if the protective layer is damaged. 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 near roofing felt different brands It 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 felt, 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 the 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!

Roofing felt is laid on a flat base, rafters or support. All roofing 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 concrete roof with roofing felt(for example, from reinforced concrete floors), then a reinforced screed, 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 it from the 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 material is placed on it parallel to the lower edge of the roof. 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 instruction:

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). They miss bitumen mastic, lay the next layer, overlapping over the ridge (its blades are perpendicular to the first), the edges are also wrapped.
Bitumen is applied again and a finishing layer of roofing felt 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 material 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.

Their popularity continues to hold strong high level. After all, laying roofing felt on the roof wooden house, bathhouse, barn or garage - the process is easy and quick. Only two people can do it, and the price of this material is captivating due to its affordability. It is for these reasons that owners of small country or village houses most often lay roofing felt on the roof.

Preparing the roof for laying roofing felt

In order for a roof covered with roofing felt to last as long as possible, it is necessary to pay as much attention as possible to the sheathing of the roof itself.

Since roofing felt is a flexible material, it can be damaged even by minor loads. For example, a cap of snow lying on the roof. And not so much in winter, but during spring snowmelt - on those days when the snow cap slides down the roof slope.

A roof covered with roofing felt does not require winter shoveling, so it will have to bear the load of the entire snow cap all winter.

For this reason, it is recommended to arrange not so much a sheathing of boards (as is often done in increments of 10-15 cm), but a continuous underlying covering made of sheets of plywood, chipboard, OSB boards or similar materials. In a word, for the correct installation of roofing felt, it is necessary to exclude even the possibility of the roofing felt itself bending between the boards of a non-solid sheathing.

How to cover a roof with roofing felt with your own hands

Depending on the slope of the roof, roofing material is laid in several layers - from two to, in some cases, five.

The greater the slope of the roof of a wooden house, the fewer layers of roofing material must be laid. That is, if the slope is quite steep (30-45 o), then you can easily get by with two layers - the underlying and the outer.

But if the roof surface tends more towards the horizontal, then the number of layers must be increased. So for a slope at 15-20 o you need to lay 2, or better yet 3 layers.

Technology for laying roofing felt on pitched roof can be done in one of three ways. But no matter which method you choose, you need to take into account that you should leave the overhangs of the roofing felt sheets to the sides so that you can then overlap them onto the gables and cover the ends of the roof.

The first option, the most common, which can be seen most often on roofs, is laying roofing felt sheets from top to bottom, along the roof slope. With this method, the laying of sheets must begin from the pediment, located most years on the leeward side, and consistently move to the opposite edge of the roof.

Depending on the area of the roof of a wooden house, it may well turn out that the length of each sheet will be enough to cover both sides of the roof at once.

If the length of one sheet to cover both sides of the roof at once is not enough, then each roof slope is covered separately, and a sheet of roofing felt is overlapped across the ridge, 20-30 centimeters in each direction.

The second option involves laying roofing felt across the roof slope, in a so-called herringbone pattern. Laying begins from the bottom, leaving 20-30 cm in order to bend the roofing material along the edge of the roof and sew it with slats or metal tape.

When laying roofing felt, they move from bottom to top, and the roof ridge is covered with one sheet of roofing felt overlapping both sides of the roof at once.

The third method involves combined laying, that is, one method of laying roofing material is used as the underlying layer, and the second is used for the outer layer.

The edges of roofing felt sheets are secured with wooden slats or a strip of metal. The use of slats to secure laid roofing material is not always justified, since over time the slats may begin to wear out, and as a result, in some places they simply stop pressing the roofing material to the roof. Water begins to flow into these places, and the wind blows debris, sand, dust, and dry leaves from trees there. As a result, the process of rotting begins, and the roofing begins to require repair.

Often wooden slats used for laying roofing felt on top of old shingle coverings on village wooden houses. In such cases, the lath perfectly presses the roofing material against the unevenness of such a coating.

Therefore, for new houses with smooth surfaces For roof slopes, metal strips - steel or aluminum - are more often used.

Also, overlaps of roofing felt sheets on each other can be additionally coated with preheated mastics or bitumens to glue them together.

Roofing felt roof repair

In order to repair leaky places on the roof of a wooden house covered with roofing felt, you only need to perform a few simple steps.

What you need to have in stock:

Bitumen mastic, a roll of roofing felt, a carpenter's knife or scissors, a brush with stiff bristles, a hammer, nails and pliers.

Bubbles with water or air are cut with cross-shaped cuts, the inside of the bubbles is cleaned and dried.
Areas of rotted or torn roofing felt are removed with a knife to smooth edges in large, intact sections.
The edges of the old roofing material are cleaned with a brush to remove debris, sand, and dust. You can also treat them with gasoline.
If necessary, remove a section of metal tape and nails so that they do not get under the new roofing material, which they can then easily tear from the inside.
A pre-prepared to size patch made from new roofing felt is glued overlapping onto the area to be repaired using heated mastic.
The edges of the patch are pressed firmly and smoothed so that voids do not form in the gluing areas. Then the patch can be completely coated again with mastic or bitumen.

Sometimes, after all the measures to clean the problem areas, dry out the bubbles and remove the slats, tapes and nails, the entire roof is simply re-covered on top of the old roofing material, but in this case it is better to remove the old roofing material completely.