Which film is better for metal tiles? Waterproofing for metal tiles: studying the range of materials and mastering installation technology. Laying material near the chimney

Metal tiles are a material that has gained the greatest popularity due to its comfort, durability and strength. Not only does it make the home beautiful appearance, but also creates a good microclimate that has a beneficial effect on humans. Before installing metal tiles, it is necessary to carry out preliminary procedures.

Preliminary procedures include: erection of the frame, installation of lathing covering (lathing), creation of a thermal insulation layer. Also the most important process is the creation of a waterproofing layer under the metal tiles. This mandatory procedure, because waterproofing the roof of a house under metal tiles makes it possible to rid the room of accumulated steam and condensation, which have a detrimental effect on the heat insulator and other parts of the structure.

Let's look at what is roof waterproofing under metal tiles or underlayment under metal tiles. How to carry out this procedure? What is the best material to choose? Let's find out the answers to these questions right now.

Moisture insulation under the metal tile is a layer that is three centimeters thick. It consists of specially designed waterproof materials that have a polyethylene base. Due to this basis, steam and condensate that have accumulated inside the room are effectively removed. This happens thanks to a specially designed ventilation gap. Because of this, protection appears insulation material from rotting, and metal tiles are protected from rusting.

A barrier is formed against the penetration of climatic precipitation into the attic space. Also, dust and dirt will not get there. Installing this roofing material(metal tiles) without an insulating layer underneath is impossible, because it has poor insulating characteristics. If the waterproofing layer is laid on top of the insulation layer, then after a certain period of time the roof will begin to rot.

The waterproofing structure under metal tiles is made of anti-condensation membranes.

It is prohibited to use mastics that have a bitumen base.

When installing the insulating layer, you must listen to the recommendations of specialists. Small mistakes can cause leaks. The service life will be reduced significantly.

Basic requirements for waterproofing

Anti-condensation films or membranes must have the following characteristics:

The material must be durable and reliable.
The selected anti-condensation film or membrane for metal tiles must be able to withstand all mechanical stress perfectly. Withstand climatic precipitation.
It must retain its shape under any influence and not be deformed.
Additional vapor barrier characteristics, as well as hydrophobicity, must be available.
Condensation and steam must not accumulate in the insulating layers.
The material must have high quality, all standards and norms must be met.
High-quality material is characterized by a long service life. It should be equal to the service life of the metal tile itself.
The insulating material must be able to withstand exposure to ultraviolet rays and sudden temperature changes.

Waterproofing under metal tiles must be carried out correctly and efficiently. If this does not happen, then structural elements I will rot in a short time.

What are membranes and films?

Membrane waterproofing film

This is a type of adhesive waterproofing. This material is based on modern technology. This film helps to withstand high pressure. Inside there are systems reinforced with specially designed material.

Membrane waterproofing film for metal tiles can withstand strong temperature changes, the influence of UV rays and more. harmful influence. A distinctive feature is that when the film is compressed, it does not settle. This allows professionals to perform procedures on foundation joints that are subject to vibration and dynamics. However, no defects occur.

The main advantages of this material:

Stability and resistance to temperature influences. During thawing and freezing, the waterproofing properties of the film are maintained.
Ease of installation and repair. You don't need to take special care of it. This is due to the durability, reliability and long service life of the film.
The film is safe material. Toxins that cause harm to the human body are not released. This creates an ideal microclimate.
There is excellent vapor permeability and hydrophobicity. Steam and condensate disappear through vent in a short period of time.
The joints are strong. It is formed using a double seam.

The waterproofing membrane must be laid so that several layers are formed. Thanks to this, waterproofing for roofs under metal tiles ensures reliability and a long service life.

Anti-condensation polyethylene film

This is a material that consists of special additives that prevent the formation of condensation. Distinctive features of this polyethylene film: unique endurance, excellent vapor permeability, reliability. Thanks to these characteristics, polyethylene film will effectively remove moisture from under the roof. This helps prevent the insulation from rotting. It also prevents the roofing layer from rusting.

If you have chosen anti-condensation as the material plastic film, then preliminary work must be carried out correctly so that the waterproofing material retains its characteristics.

Features of installation

Installation of waterproofing under metal tiles includes the procedure of applying an anti-condensation membrane to the rafter system, which should have been built in advance. Before starting the procedure, the gutter hooks must be correctly positioned under the drainage system. Next, install the cornice board.

The membrane should be laid in two layers. They are installed on top of the heat insulator with an overlap. It should be level. The edges insulating material need to be sealed, this can be done using specially designed adhesive tape. The waterproofing sheet is secured using metal brackets. Next, we fix the counter-lattice using bars. On top there is a covering of laths.

During the installation of the waterproofing layer on the roof, namely the ridge, you need to leave a gap for ventilation. The width of this gap is 50 millimeters. Thanks to this gap, excellent ventilation is formed in the room, which is located under the roof.

Key points to be observed during installation:

Prevent moisture from dripping from the insulating film onto the insulating material.
Be sure to insulate areas where structural elements such as stove or fireplace pipes, chimney, ventilation ducts, and so on intersect. In the area where such intersection occurs, it is necessary to make an incision in the membrane. The shape of the cut is trapezoid. After this, using sealing tape, two valves (upper and lower) are attached to the horizontal part of the batten covering.
Be sure to familiarize yourself with all regulations and standards.
First, waterproofing is laid under the metal tiles along the roof ridge.
On the roof slopes, waterproofing material is laid in the form horizontal stripes overlap

To attach the waterproofing barrier, use K-2 butyl rubber tape.

Do not forget that the waterproofing material is laid on the roof surface with perforations outer side. If you don't do this, what waterproofing layer will become useless and will allow moisture to pass through.

Although laying an insulating membrane under metal tiles is quite easy, this procedure is best left to real professionals, since there are many nuances that must be observed.

Specialists will perform the procedure correctly and competently according to the instructions. Do not forget that waterproofing and vapor barrier under metal tiles are necessary, because this is the only protection against moisture penetration into the space under the roof. Metal tiles without waterproofing are a sieve. You can also install the membrane under the metal tiles yourself.

Bottom line

Waterproofing metal roofing – required element roof structures. If you have an under-roof room, this will protect it from climatic precipitation. To carry out waterproofing under metal tiles, you must select required material. Roofing film or the membrane must be installed according to the instructions of the selected insulating material.

For metal tiles should only be used quality product. The laid material must retain all its waterproof functions. For metal roofing, an individual membrane is chosen. Trust the professionals who install the anti-condensation membrane better. Properly carried out waterproofing will protect all parts of the under-roof space.

Metal tiles and corrugated sheets are based on a metal sheet.

It is covered on both sides polymer material, which is not able to improve the thermal insulation qualities of a thin roof. Therefore, such roofs mandatory.

However, an ill-conceived and incorrectly laid insulation cake can lead to rapid corrosion of the metal.

Correctly selected and properly applied waterproofing will help you avoid problems.

High quality roofing doesn't protect from penetration of moisture under its sheets. There will inevitably be water seep through overlaps at joints and attachment points.

The appearance of moisture on the back side of the roofing sheet would not pose a danger if it had the ability to quickly evaporate from there, as it does on the outside of the roof. However, a roofing pie implies the presence of a thick layer of porous insulation, which perfectly absorbs and retains a significant amount of water.

That's why back side roofing material will be continuously exposed to fumes from the slowly drying insulation. And this will greatly accelerate corrosion even with a polymer coating.

Waterproofing helps reduce the amount of moisture in the roofing pie. Water penetrating under the roof will simply flow down it and be discharged outside. At the same time, the insulation will remain dry and not only will not turn into a corrosion catalyst, but also will save its thermal insulation qualities.

What types of waterproofing materials exist

Among the methods of waterproofing roofs (), the following are most widespread:

Pasting. The first options were glassine and roofing felt, but now they have been replaced by polymer bitumen coatings, supplied in rolls. Stick them on heating or by means of binding agents;
Painting. The method involves applying viscous materials directly to the roof surface. Layer thickness - about 2 mm. Most often used on flat concrete roofs;
Waterproofing with sheets. Used on roofs under heavy loads. The method is welding waterproofing sheets into a single canvas. Can be used as metal sheets, and plastic;
Film waterproofing. The most rational method of waterproofing pitched roofs. Consists of installing sheets of moisture-proof film or membrane. The film is located between the roofing material and the insulation layer.

Due to successful combination of low cost, durability and excellent waterproofing the latter method is most widespread in both industrial and residential construction.

Waterproofing the roof of a house under metal tiles

Waterproofing a roof under metal tiles begins with choosing waterproofing material. Which waterproofing is best for metal roofing? When laying metal tiles, the following types are used: film waterproofing:

Classic polymer films . They are relatively cheap, but during installation they require two-way ventilation: the film should be located at a distance of several millimeters from both the metal tile and the insulation located below;
Anti-condensation films. They differ from ordinary ones by the presence of fine pile on one side. The fibers help absorb steam from the space between the film and the roof, thereby preventing it from condensing on the metal. During installation, a two-way ventilation device is also required;
Auperdiffusion membranes. Their main difference from classic films is the ability to pass a certain amount of steam through themselves, while maintaining impermeability to drops of condensation and water penetrating from the roof.

It is up to you to decide which waterproofing to choose for a metal roof. The choice between these materials depends on the installation conditions, i.e. from the availability of two-way ventilation. The financial factor also influences: classic films are always cheaper superdiffusion membranes and anti-condensation films.

Roof waterproofing under corrugated sheets

Owners often wonder: is it possible to cover a roof with corrugated sheeting without waterproofing? In general, corrugated sheets are often laid overlapping, with an approach of 10-15 centimeters, which helps to avoid moisture penetration.

But these joints are still not airtight and moisture penetration is only a matter of time. Therefore, sealing the roof is mandatory.

Which waterproofing to choose for a corrugated roof?

There are no fundamental differences in the requirements for waterproofing roofs made of corrugated sheets and metal tiles. Therefore, it is allowed to use exactly the same materials. However, some features should be taken into account:

sheets of corrugated sheets are much easier to seal with each other, therefore less moisture penetrates underneath them;
there are fewer attachment points here, which also reduces water penetration;
The service life of high-quality corrugated sheets is longer than metal tiles. Accordingly, it makes sense to opt for more durable waterproofing.

What is the difference between waterproofing cold and attic roofs?

Owners often have a question: Is waterproofing needed under corrugated sheets? cold roof? The answer is yes, it is necessary, but there are several nuances.

If the attic space is not heated, then in this case the only function assigned to waterproofing is to prevent water leaks from the roofing material. Therefore it is enough only one layer of waterproofing, fixed between the sheathing and the roof counter-lattice.

In order for the water rolling down the film to escape out, a overlap of waterproofing on the eaves strip. The amount of overlap is 40 mm.

In the case of a heated attic, there is also an insulating pie under the roof. not only from moisture coming directly from the roof, but also water vapor, acting from the warm attic. Therefore, an additional one will be required here, placed between the insulation and the room.

Cold roofing pie

Fastening the insulating membrane with a construction stapler

Waterproofing laying technology

The process of laying waterproofing begins with preparation slats for sheathing and counter-lattice. To do this, timber with a cross section of 20-30 mm is cut into pieces of the required length and treated with a fire retardant compound and an antiseptic. Next, the sequence of actions will be as follows:

on top of rafters horizontal lathing is packed;
overlapped actually laid waterproofing material. In this case, you should be guided by the markings on the film, which indicate the top and bottom sides of the waterproofing. Laying starts from the bottom, to top sheets could form a waterproof overlap. If available in the roof skylights organize their bypass with additional fastening with a stapler and sealing with tape;
stuffed vertical counter-lattice made of timber of slightly smaller cross-section than the main sheathing. We recommend reading a more detailed article about.

Counter batten slats are nailed not close to each other, and with small gaps between them. In this case, they are guided by the rule: for one meter of slats there should be one centimeter free space. This will allow air can circulate freely under the surface of the roof and carry away the drying moisture.

Is waterproofing necessary for metal tiles on a cold roof? As is the case with roofing corrugated sheets, installation waterproofing membrane is required, because roof joints are not sealed and can let water through.

For an insulated attic you will need to do more series of steps:

after laying the insulation with inside rafter structures the whole pie is covered. To seal the seams of the vapor barrier, they are taped with tape. TO rafter structures the canvas is fastened with a construction stapler;
the roof is covered with plywood from the inside, moisture-resistant plasterboard, PVC panels, etc.

Then proceed to interior decoration attic space.

Roofing pie for attic roof

Laying a waterproofing membrane

Useful video

We bring to your attention a video on sealing a metal roof:

Conclusion

From quality waterproofing a metal roof in many ways its service life depends. This is especially important in cases with insulated roofs, where double-sided waterproofing of the insulation is necessary. Therefore, it is necessary not only to choose the most suitable material, but also not to deviate from the technology of its installation.

A roof made of metal tiles or corrugated sheets needs high protection from water, since iron, when in contact with cold air, can form condensation underneath, which can damage the rafter system. Since waterproofing for a roof under metal tiles is carried out similarly to roofing with corrugated sheets, then consider them better place. Waterproofing the roof of the house under these materials must be done with high accuracy. In this article we will tell you in detail how to do this and choose the right material.

The material for metal tiles or corrugated sheets on a log house must be laid as recommended by the manufacturer, this is the only way the structure will last for a long time. The choice of waterproofing material depends on the choice of roof structure (“roofing pie”). They come in two types:

Warm. This option is for a heated part of the house under the roof, when the attic or attic room used for any economic needs.
Cold. When the attic is not heated and is not used in any way.

Each involves the use of one or another material for waterproofing. Let's look at each separately.

Waterproofing under a cold roof

The standard design of a “roofing pie” for a house made of cold roof timber under metal tiles or corrugated sheets consists of the following layers:

Lathing and counter-lattice for fastening sheets of corrugated sheets or metal tiles. This layer creates a ventilated gap under the roof and waterproofing, where condensation will not accumulate and immediately evaporate.
Waterproofing layer. In such a system, it is advisable to use a special membrane film. It is able to protect the rafter system from any precipitation.
Roof rafters.
Interior decoration of the attic (at the request of the owner).

Waterproofing under a warm roof

“Roofing Pie” warm roof has more complex design. Let's look at its main layers:

Lathing and counter-lattice for corrugated sheet material.
Waterproofing layer. In this design, the choice of material must be approached more responsibly, since it will have to be protected in more harsh conditions. These include large temperature differences with the formation of condenser vapors, when it is -30 outside and +20 inside the heated attic, the need for high vapor permeability and protection from possible leaks. Waterproofing should protect the insulation so that it does not lose its functionality.
Next, another sheathing is made, which creates an additional ventilated gap (roof ventilation).
Insulation. For thermal insulation, insulation with a thickness suitable for a specific region is used. Lay insulation between the rafter legs.
A vapor barrier layer that protects the insulation from wet vapors from inside the attic or attic.
Interior wall decoration.

Ruberoid as a waterproofing material for metal roofing

Roofing felt can only be used in the construction of a cold roof of a house, and in the most desperate cases. In this case, metal tiles or corrugated sheets are mounted on the sheathing to create a ventilated gap that will draw out excess condensation.

If the corrugated sheet is planned to be laid on old roof, then you can use roofing felt only if you have a ventilated attic system.

In any case, iron sheets should only be laid on the sheathing, which is attached directly to the waterproofing. Installation cannot be done any other way, otherwise the roof structure will wooden house will rot quickly.

Three-layer membrane material for metal roofing

It is more appropriate to use a membrane waterproofing agent or a three-layer film under a metal roof. This material consists of polypropylene fiber, which plays a reinforcing function and two protective ones. The material has micropores, so it does not prevent moisture vapor from escaping from the house. It is durable and protects the roof well from moisture.

Membrane film can be used both in warm and cold design roofs of a wooden house. The main thing during installation is to correctly determine the direction of the moisture-proof layer. It's easy to do. On a roll top part when rolled out it will be moisture insulating. This is convenient when installing the material. Film-type waterproofing performs two main functions that are important under a roof made of metal tiles or corrugated sheets: releasing vapors from the inside of the structure and preventing moisture from entering from the outside.

If the choice is made on a film type of waterproofing, then you need to choose the right type correctly.

Types of film waterproofing

To waterproof a simple cold roof of a house, you can take the most cheap option membrane foam, which we have already described. For warm design It is better to use super diffusion membrane film. Its price is much higher, but it is possible to install a ventilation system only between metal roofing and waterproofing.

The most expensive version of the membrane film is anti-condensation. The material has a higher density and has a special rough layer that prevents condensation from accumulating. This is good to use for complex system roofs when waterproofing a metal tile roof is performed.

Another advantage of anti-condensation film is high degree fire resistance. During testing, experts concluded that the material does not burn.

Installation of waterproofing under metal roofing

When installing waterproofing, you need to understand that it is necessary to exclude its contact with the insulation, if it is provided for in the design. When laid against the insulation, the waterproofing loses its protective properties.

After assembling the rafter part, waterproofing is installed on it. The waterproofing must be secured to the base of the roof with a counter-lattice. The gap between the metal roof and the waterproofing is required to be at least 0.5 cm.

The roll of film should not be spread out stretched, but there should not be much sagging, maximum 0.2 cm. If you do not follow this rule, the material will tear when moving the house and temperature changes.

There should be a good ventilated space of at least 5 cm between the metal roof and the waterproofing. This ventilated gap is especially necessary in the ridge area. If you follow these rules, the roof will be well ventilated.

You need to roll out the material starting from the cornice part to the ridge. The overlap of waterproofing depends on the material and is usually recommended by the manufacturer. The membrane material has a special line along which installation is easier.

Some subtleties when laying waterproofing

Only by following all the basic rules can you fulfill reliable protection roofs under metal tiles or corrugated steel. When choosing a membrane film material for work, you should purchase it only from well-known manufacturers.

Price for film waterproofing and work

Film-type protective material is produced in rolls of 50 m, 150 m wide. When purchasing, you need to pay attention to the density; for a roof made of corrugated sheets or metal tiles, the range should be 140-160 g/m2. Domestic and foreign manufacturers produce protection. The price of film of different production is presented in the table:

The price of work to protect a roof made of corrugated sheets differs depending on the qualifications of the workers. If you hire from advertisements, the cost is lower, but no one will be responsible for the quality of how the roof will be protected.

Whether to hire professionals or do the work yourself depends only on personal choice. But do not forget that from correct execution protective structure depends on how often it will be done renovation work and how long the roof of the house will last.

Regarding the question of whether it is necessary or not to install waterproofing under metal tiles, experts give only an affirmative answer. This categorical approach is explained by the fact that when using roofing decking made of this material, condensation forms on the side facing the inside of the attic space. If there is no waterproofing, then the resulting moisture will penetrate into the insulation, which will soon become unusable.

Waterproofing materials for metal roofing

To ensure waterproofing, a vapor-permeable under-roofing film under metal tiles, shown in the photo, is usually used, which is laid under the roof deck. is intended to protect the room located under the roof from precipitation, melt water, dirt and dust. Thanks to the film, moisture does not enter thermal insulation layer from the outside of the building.

The product intended for roof waterproofing is a three-layer material with a woven reinforcing mesh made of polyethylene fibers. On each side there is a lamination made of polyethylene coating.

The variation of film for waterproofing varies depending on the type and thickness of lamination:

with fire-resistant qualities;
with UV resistance;
various colors, etc.

Typically, a roll of waterproofing film looks like a strip 50 meters long, 150 centimeters wide and specific gravity 140 g/m². It should be noted that the service life of this material is similar to the durability of metal tiles. This film is resistant to rotting processes, and fungus and mold do not form on it. In addition, it is an environmentally friendly product and does not have a negative effect on the human body.

In private housing construction, roofs made of metal tiles are considered the most practical solution, while they have a fairly attractive appearance. But any experienced roofer will confirm that without high-quality waterproofing, the roofing structure will not last long, that is, its service life will be significantly reduced.

Precipitation has a negative impact on the roofing material, insulation, and other structural elements, so waterproofing the roof under metal tiles is a mandatory step when installing the roof.

In this article

Consequences without the use of waterproofing

Consequences that may occur in the case of installing a metal tile roof without using a waterproofing layer.

The rafter frame may become damp. When condensation gets on rafters made of wood, which absorbs moisture well, they accordingly begin to become covered with fungus, mold, rot and deteriorate faster. As a result, deformation of the entire roofing structure.
Moisture can get on the insulating layer. Insulation not protected from moisture waterproofing film, will become damp, and accordingly its thermal insulation capabilities will significantly decrease. It should also be taken into account that even after complete drying, the thermal insulation characteristics of the insulating material are not restored.
Corrosionmetal tiles. In the absence of a waterproofing layer, condensation will collect on the inside of the roofing material, resulting in metal surface will begin to rust. The connection areas are the most susceptible to corrosion. roofing with a rafter system. As a result of corrosion of metal tiles, the reliability and service life of the roof is significantly reduced.

Important! Waterproofing the roof of a house under metal tiles is a mandatory step when installing a roof, which guarantees the reliable operation of the roofing structure and doubles its service life.

Basic requirements for waterproofing a metal roof

Waterproofing made from anti-condensation membrane film must meet the following characteristics:

Reliability, endurance.
Resistance to mechanical, chemical influences, influences of the natural environment.
Maintaining the original shape – resistance to deformation.
Have good indicator hydrophobicity, vapor barrier.
Do not allow condensation to accumulate.
High quality workmanship, compliance with established construction standards.
Length of operational period.
Resistance to ultraviolet radiation, temperature changes, environmental influences (precipitation).

Important! Roof waterproofing under metal tiles must be installed at a high-quality level, with maximum reliability for the entire roof structure, otherwise premature failure cannot be avoided.

Types of waterproofing substrates

When arranging waterproofing of the roof of a house, it is necessary to take into account the possibility of condensation forming both under the roofing and under the insulating material. Therefore, an anti-condensation layer is made on the inside of the waterproofing film, and a ventilation gap must be left.

The formation of condensate depends primarily on installed roof, which can be cold or warm type. That is, the intensity of formation and the volume of condensate completely depends on the temperature below and above the substrate.

Types of waterproofing film

Classic. Using of this type film ventilation is arranged in two areas: insulation - waterproofing - roof covering.
Anti-condensation. A fleecy moisture-absorbing layer is used as a base, and dual-circuit ventilation is installed.
Diffusion membrane. This material is different increased vapor permeability, therefore ventilation is arranged only between the roof covering and the waterproofing layer.

Waterproofing underlays may also vary depending on the type of roof. It is necessary to consider what type of roofing pie will be: heated or unheated.

Underlay for heated roof

If it is planned to install a heated roof, for example, when a living space is installed in the attic, the installation of the roofing pie has a rather complex design and is carried out step by step.

How to waterproof a roof under metal tiles?

The sequence of arranging the roofing pie for warm roof from metal tiles:

Lathing, counter-lattice.
Waterproofing underlay. Provides protection for the roof structure from condensation and releases water vapor from the warm attic space. That is, the waterproofing material must have additional vapor barrier properties.
Air gap. A ventilation layer of 2-3 cm ensures that the waterproofing film performs its own functions.
Thermal insulation. Installation thermal insulation material produced in the rafter system, it is designed to retain heat in the attic. The thickness of the thermal insulation layer is selected depending on the characteristic temperature regime region in which the house is located.
Vapor barrier. Prevents condensation from entering the living space into the roof space.
Internal lining of the attic ceiling- This is the final stage of arranging the roofing pie on the roof.

If all of the above points are followed when arranging the roof, it will serve reliably for a long time, the attic space will be warm and comfortable to live in.

Underlay for an unheated roof

Is waterproofing necessary for metal tiles on a cold roof?

To install a roofing pie on an unheated roof, a more simplified scheme is used:

Lathing, counter-lattice.
Waterproofing.
Rafter system.

Accordingly, installation is much faster.

Any film can act as a waterproofing material: diffusion, anti-condensation membrane, or other waterproofing material that does not allow moisture to pass through.

Ruberoid for waterproofing substrate

Roofing felt is a building material consisting of fiberglass (cardboard) coated with bitumen. The guaranteed service life for roofing felt, depending on operating conditions, can range from 5 to 15 years. If this material used for a waterproofing substrate, then its service life will be longer, since it is limited from direct contact with sunlight.

Important! Roofing felt can be used for arranging a waterproofing substrate only if the roof slope is no more than 25º.

Disadvantages of using roofing felt

The base of the roofing material, made of cardboard, quickly evaporates. Therefore, it is better to use fiberglass-based roofing felt, but this material is also short-lived.
Integrity violation bitumen coating as a result of exposure to moisture.
Ruberoid is classified as a fire hazardous material.

Important!Roofing felt for waterproofing can only be used for arranging cold roofing structures.

Waterproofing laying technology

The main function of waterproofing material is to protect wooden rafter system, insulating material against moisture and condensation.

The installation of the waterproofing layer is carried out after installation rafter frame, but before laying the roofing material.

Waterproofing is carried out according to the following scheme:

The waterproofing film is cut into strips, the length of which should be 10-15% greater than the length of the roof slope.
Waterproofing of a metal tile roof is carried out with sagging to prevent rupture of the waterproofing material as a result of possible leaks.
The waterproofing material is attached along the rafters, for which a mounting stapler with stainless steel staples is used.
Roofing felt is attached to the rafters with galvanized nails.
The joints between strips of waterproofing material are treated with a special sealant that is resistant to moisture (mounting tape can be used).
After installing the waterproofing material, a counter-lattice made of slats is installed along the rafters to ensure ventilation.

It is important to remember the basic rule! Without high-quality waterproofing, the service life of a metal tile roof is significantly reduced. Waterproofing coating will help not only extend the life of the roof, but save money on premature repairs.