Which rolled waterproofing to buy: an overview of materials for pitched and flat roofs. Roof waterproofing materials Types of roof waterproofing

The roof of the house protects it from the negative effects of any precipitation and tightness is one of its functional purposes. Roof waterproofing prevents moisture from reaching the insulation and structural elements and prevent their destruction.

Not so long ago, roofing material was practically the only waterproofing material, but now there are a lot of waterproofing options: gluing, coating, painting, penetrating, fusing, spraying and modern films with membranes.

In this variety, you need to choose the most effective waterproofing for each specific case.

Gluing waterproofing

Gluing waterproofing is a traditional method used for many decades with the use of roofing material. Its advantages are the low price of the material and the ease of installation.

For the device of pasting waterproofing, it is required to prepare the base well: it must be dry and even so as not to damage the roofing material. The surface is primed with bitumen and a waterproofing layer is applied to it.

At present, roofing felt has been replaced by more modern analogues with the best technical specifications, among which: glassine, stekloizol, brizol, glass roofing material, vinyl plastic, isoelast, isoflex, mostoplast and ordinary polyethylene.

When choosing waterproofing for a roof, you need to familiarize yourself with the properties different materials and their technical specifications. Here a brief description of just some of them.

materials

Glassine is a roll material, which is obtained by impregnating special roofing paper with bitumen. It is inexpensive, but it does not last very long, so it is not economically profitable to use it for waterproofing the roof of a new house, but for budget repair it fits perfectly.

Stekloizol is also an inexpensive roll material with a service life of up to 10 years. It is based on a simple fiberglass or fiberglass or fiberglass with a bitumen-polymer layer, on top of the glass isol sprinkled with granite chips.

Brizol is also sold in rolls; it is often used in industrial construction. In its production are involved: rubber, petroleum bitumen, and plasticizers and asbestos as additives. By their own technical parameters it is very similar to isol (also a waterproofing material), but it is more expensive and has higher performance characteristics.

Stekloruberoid - produced by the method of double-sided application of a bitumen-rubber or bitumen-polymer binder composition to fiberglass, and on the one hand it is sprinkled with fine-grained, scaly or coarse-grained dressing. Glass roofing material has good physical and mechanical properties and durability up to 30 years. This is roll material.

Viniplast (unplasticized polyvinyl chloride) is a very high quality synthetic sheet material. It is lightweight, durable, flame retardant, easy to process, used in a wide temperature range, durable (service life up to 50 years).

Isoelast is a rolled material obtained by double-sided application of a bitumen-polymer composition on a polyester base. It happens with coarse or fine-grained dressing (one-sided or two-sided) or it has a plastic film on one or two sides. It is operated up to 30 years and is used in any climatic zones.

Isoflex - is actively used not only for roof waterproofing, but also for soundproofing. This is a dense foamed polyethylene, there are varieties with an additional metallized coating.

Mostoplast is a bitumen-polymer rolled material with unique properties. It is designed for waterproofing at very complex facilities, including underground ones (garages, swimming pools, galleries…). The material is waterproof, strong and durable - up to 25 years.

Coating waterproofing

The name is associated with technology - the surface is coated with a special composition. Bituminous mastic, made on the basis of pure bitumen, is the most affordable tool.

Bitumen, applied in layers, and having a thickness of even several centimeters, retains its properties for no more than 5-7 years, and then, having lost elasticity, it begins to crumble and loses its tightness.

When arranging bituminous roof waterproofing, remember that it is susceptible to low temperatures - the surface is covered with microcracks, which become more noticeable every year and eventually pieces of insulation begin to fall off.

Polymer coating waterproofing has increased elasticity, resistance to aggressive environment and long service life. But the consumption of this tool is greater than that of the bituminous counterpart.

Bitumen-polymer compounds include bitumen, synthetic rubber and plasticizers that improve the elasticity of waterproofing. They are easy to use and do their job well.

Coating waterproofing is considered not only bitumen and polymer mastics, but also silicone and polyurethane.

Hot or cold

Coating waterproofing according to the application technology can be hot or cold. The hot method involves heating the composition and then applying it to the surface. Prepared mastic should be used immediately.

The cold method does not require heating, and waterproofing can be applied even intermittently - its properties do not change.

Coated roof waterproofing is commonly used on flat roofs ah or on roofs with a minimum slope.

Paint waterproofing

This waterproofing is applied with a simple roller or spray gun to the surface that needs to be isolated from moisture. Usually make from two to four layers, observing the necessary intervals for solidification of each previous layer. The thickness of the paint waterproofing is 3-6 mm. To give increased strength to the surface, fine sand is scattered over it.

Painting waterproofing is presented on the construction market with special emulsions, enamels, paints and varnishes.

The service life of this waterproofing is small (within five years), but it is inexpensive, so it is also in demand.

Penetrating waterproofing

Penetrating waterproofing can be called a new generation material. It not only covers the surface, preventing moisture from entering, but also penetrates into it by about 20 cm, strengthening the structure and filling even the smallest cracks.

Liquid glass, polymers or synthetic resins are used as penetrating waterproofing.

This waterproofing is particularly effective when applied to porous surfaces and is mainly used on flat roofs.

The strength of concrete after treatment with such a composition increases by twenty percent. Using deep penetration compounds, you can extend the life of waterproofing protection up to 70 years or more, because it is very stable and does not respond even to low temperatures.

Fused waterproofing

Fused roof waterproofing is a rolled material made on the basis of fiberglass, fiberglass or polyester impregnated with bitumen or polymer (binder composition). The thicker the material, the more durable it is (its service life is from 10 to 25 years).

The built-up waterproofing is fixed to the base by melting its lower layer under the action of a gas burner. The bitumen is melted, the roll is rolled back, treated with fire again and rolled back again, and so on, until the roll is over. The hardened binder securely fastens the waterproofing material to the roof surface.

Two-layer built-up waterproofing is resistant to mechanical damage, easy to install and has a low price. It is widely used at industrial and civil construction sites, on operated and non-operated roofs with a slope of no more than twelve degrees.

Sprayable waterproofing

Spray waterproofing is best suited for flat roofs with ledges, parapets. It, with a layer of the same thickness, covers not only a flat surface, but also a complex relief, leaving no seams or unprotected areas, creating an integral hermetic protection.

The most popular material that is sprayed on the roof is liquid rubber. It is applied using very expensive equipment (electric or gasoline) by airless spraying.

Proper spraying equipment and quality liquid rubber are required to create reliable insulation. All this can only be provided by large specialized companies that train their specialists to work with new materials and the most modern equipment.

No room for error

Roof waterproofing is a very important stage in the construction of a building with any roof structure, but when installing a flat roof, there is no right to make even a minor mistake, because unlike pitched roofs that have a finish coating, a flat roof is protected from precipitation and other environmental influences only by a layer of waterproofing .

To extend the life of a flat roof, it is sometimes covered with a special topping. On exploited roofs do concrete screed and lay tiles. The main thing is that during the installation of the screed, the waterproofing should not be damaged.

Modern membranes

There are waterproofing materials that are mainly used on flat roofs, and there are those that are equally effective on both flat and pitched roofs - these are membranes. They are quickly mounted and do not require the use of expensive specialized equipment.

The easiest way to mount them on pitched roofs is mechanical. They are laid out on the crate, starting from the bottom of the roof, so that at the joints an overlap of about 20 cm is obtained. The material is fixed on the crate with a construction stapler. A counter-lattice is stuffed onto the laid waterproofing and roofing material is laid.

But do not confuse a vapor barrier film with a waterproofing membrane - they have different purpose. The film is designed to protect the insulation in the roofing cake from wet vapors, preventing their penetration from the living quarters. Waterproofing not only protects against wind and moisture, but also due to the fact that it has a porous structure, it allows the moisture that somehow got into the roofing cake to evaporate.

The membranes are polymeric insulating materials. Waterproofing for roofing using membranes has proven itself well. The efficiency of the membranes is better, and the service life is longer, so they are in demand in the construction market.

Their types

Membranes may differ in width or length, in thickness and in color, in structure. They are elastic, but durable, used on roofs with different angles of inclination. There are three main types of membranes: EPDM, PVC, TPO.

EPDM (EPDM) - ethylene propylene rubber - are made from artificial rubber and are reinforced with a polymer mesh for strength. They have been produced for more than 50 years and still these materials are in demand due to their strength, good adhesion and durability.

PVC membranes are made of polyvinyl chloride with the addition of plasticizers for flexibility and have a reinforcing mesh for strength. Manufacturing companies are constantly improving their products, introducing new ingredients into its composition, so that it fully meets the needs of customers.

TPO membranes are one of the most modern, among those that have relatively recently appeared on the domestic market. They were developed in the 1990s in America. The membranes are made of artificial rubber and polypropylene and combine the properties of both plastic and rubber.

Today it is perhaps one of the most hermetic waterproofing materials. It has a long service life, but the price is not the cheapest. It is ideal for those homeowners who want to install and forget about roofing without having to deal with annual maintenance and repair work.

Both for tiles and ondulin

Roof waterproofing must be reliable. And this quality directly depends on the correctly selected system for a specific roofing. For example, a metal tile (folded roof, metal slate) has a high thermal conductivity and when the weather changes with a sharp temperature drop, condensation appears on the metal, so it is best to use membranes with an anti-condensate layer - fibrous and hygroscopic.

Ceramic or cement tiles, slate cannot create an airtight protection for the house, therefore, in without fail in need of waterproofing of the under-roof space. In this case, materials with good tightness will be appropriate.

Ondulin itself is quite tight, and some manufacturers even indicate in their installation instructions that waterproofing may not be used, but still it is better not to neglect additional protection from precipitation, especially if attic floor insulated.

Contact the professionals!

There are many things to consider when choosing a waterproofing system. important nuances known only to professionals. Therefore, if you want to repair the roof of your house, or at the stage of building a new home, you approached the arrangement of the roof and under-roof space and do not know how to do it correctly, then call us, write a letter to e-mail or leave a message on the site.

Moskoplekt LLC specialists will answer your questions, give recommendations and help with the choice of materials. We have been engaged in roof waterproofing for many years and have accumulated extensive practical experience, which allows us to solve the most complex tasks quickly and with high quality of work performed.

Prices for waterproofing works

It is rather difficult for an ordinary consumer to figure out the range of materials intended for roof waterproofing on their own. There are many products on the market, and right choice depends on several factors. This is the structure, shape and dimensions of the roof, as well as the type of roofing and the type of insulation. Based on the above points, it is determined what the waterproofing of the roof will be, the materials and the method of their application or installation. This issue should be approached responsibly, as a leaking roof can cause huge trouble.

Types of waterproofing materials for roofing

Waterproofing materials for roofing are divided according to their composition, as well as according to the method of installation into several groups:

• films - the most affordable and popular option;
• membranes - PVC, EPDM, diffusion, anti-condensation, spike-shaped, perforated;
• coating two- and one-component mastics - from bitumen, acrylic, rubber, silicone, polyurethane;
• injection resins and emulsions - acrylate, silicate and polyurethane;
• sprayed mixtures - liquid rubber, polyurea, as well as two-component acrylate compounds;
• pasting roll and sheet materials - a traditional option known to every consumer;
• penetrating waterproofing - semi-penetrating and penetrating deep into the base.

Consider the most popular materials for roof waterproofing.

Films

The film waterproofing device is the simplest, in terms of labor costs, and the cheapest, in terms of material costs, method of protection against moisture penetration. The film is laid, as a rule, under slate sheets, metal profiles and metal tiles. The roof, in this case, should have slopes, and here you can use mineral wool or styrofoam.

The film is laid across the rafters, rolling it along the overhang. Work begins with the cornice, rising up to the ridge. If the slope of the slope is 15-30%, then the overlap in the longitudinal direction is made at least 250 mm. If the roof is steeper than 30%, then it is allowed to reduce it to 150-200mm.

When laying out the film, care must be taken that it is in no case stretched. In the intervals between the rafters, small sags should be left, approximately 15-20 mm.

The laid material is fixed with a longitudinal crate designed for further fastening of roofing sheets.

membranes

This roofing waterproofing material belongs to a new generation of weather protection. They are divided into three main groups:

• EPDM (international marking) - synthetic elastomers, which are ethylene-propylene rubbers;
• PVC is a plasticized polymer material based on polyvinyl chloride;
• diffusion, subdivided into superdiffuse, microperforated, anti-condensate.

EPDM membranes are universal. They are laid on roofs of various shapes and slopes. The thin elastic material contains carbon fibers that act as reinforcement, vulcanizing additives and plasticizers, it easily lays on the base. The membrane acquires its original dimensions after the removal of loads, it is thermally stable and safe.

Other benefits of EPDM include:

• installation speed;
• invulnerability to biological influences;
• high rate of elasticity;
• resistance to punctures and mechanical stress;
• ease;
• hydrophobicity;
• resistance to weather and temperature changes.

Installation of roof waterproofing from EPDM membranes is carried out using three methods:

• free laying - fastening is carried out along the perimeter, as well as in the places of docking and adjoining to vertically located surfaces;
• mechanical fastening - using special fasteners to avoid violating the integrity of the material;
• full gluing - in case of laying the membrane on roofs of complex shape.

This type of material can be laid even on old waterproofing without dismantling it. The edges of the membrane are spliced ​​by vulcanization, which makes the seams reliable and durable.

It must be remembered that EPDM membranes are afraid of pointed corners of the roof, as well as technical oils, fuels and lubricants and direct contact with chemicals.

Roof waterproofing using PVC membranes is no less attractive. Plasticizers give the material flexibility, and a reinforcing mesh located between two layers of PVC - strength. The bottom layer has dark color, it does not contain stabilizers and flame retardants. The top layer of the PVC membrane gets a light shade due to fillers and dyes.

This waterproofing material:

• has an affordable price;
• meets the criteria of reliability and manufacturability of installation;
• maintainable;
• quickly and easily fit;
• retains elasticity when changing temperature regime in a wide range;
• mechanically, chemically and thermally stable.

Between themselves, PVC membranes are welded with hot air coming from automatic welding machines, and canvases are fixed around the perimeter. Waterproofing of a flat roof with a slope of less than 10% is carried out using a ballast method (a layer of gravel or crushed stone is poured on top).

The diffusion membrane is suitable for all types of roofs - flat and pitched. The difference between microperforated membranes and superdiffusion membranes is that when laying the former, it is necessary to leave a gap between the waterproofing and heat-insulating material, and in the second case, this should not be done.

For metal roofing the best option will become an anti-condensation diffusion membrane. It is laid under corrugated board or metal tiles that do not have a protective coating with back side, as well as under galvanized iron. To prevent contact of the waterproofing material with the metal surface of the roofing sheets, it is placed with the non-woven layer down. The moisture accumulated in it gradually evaporates.

Between the anti-condensation membrane and the insulation, it is necessary to leave a gap of 2-6 cm. In addition to the function of waterproofing, this material plays the role of a vapor barrier.

Coating and painting roof waterproofing

Whatever the waterproofing of the roof, the materials, price, their quality and ease of application or installation should be acceptable to a consumer with an average material income. Not everyone can afford ultra-modern technologies, no matter how attractive they may seem. This is especially true for simple buildings. For them, it was and remains the most acceptable option for coating waterproofing using bituminous mastic.

But do not forget that bitumen, under the influence of high temperatures in the summer, begins to melt and flow down the roof slope, exposing some areas. And when it freezes, it loses its plasticity, begins to crack and collapse. Don't skimp on waterproofing. In the end, you will have to pay more, laying out certain amounts for permanent repairs, especially if the ceiling starts to leak.

The way out is offered by manufacturers of modern waterproofing materials, which produce bitumen-polymer mastics or paint and varnish emulsions and coatings. They are applied to a solid base of a flat roof:

• concrete;
• wooden;
• metallic.

Hardening, coated waterproofing creates a seamless plastic surface, which, according to technology and appearance reminiscent of bulk floors. Depending on the type of mastic, it is applied hot, heated to 160 degrees, or cold.

When installing paint waterproofing, it is distributed over the base manually, but sometimes this is done using a special sprayer. It is applied in 2-4 layers with a thickness of 3-6mm. In this case, polymer bitumen compositions with plasticizers are also used. They are reliable, but for too short a time - no more than 5-7 years.

If we compare the cost of works on the device of the two considered options for waterproofing roof protection, then we can say that the price for the installation of paint waterproofing is much higher than the coating one.

Injection waterproofing

Used only in special cases injection waterproofing roofs - the price for it is too high. Therefore, it is rarely used. There are four types of formulations used for injection:

• polyurethane - when exposed to water, foaming occurs with an increase in the volume of the waterproofing material, which prevents any moisture from penetrating into the structure;
• epoxy - simultaneously waterproof and strengthen the base;
• microcements - prevent capillary absorption of water;
• acrylate - used to fill voids and seams.

The indisputable advantage of the injection method is the possibility of waterproofing hard-to-reach areas of the roof, as well as in the event of voids in the floor slabs and during local repair of the coating. In situations like this this method will be the only solution to the problem.

Liquid rubber

The material belongs to the group of sprayed membrane waterproofing. Liquid rubber coating:

• has good adhesion to any bases and roofing materials;
• fireproof;
• elastic;
• seamless;
• waterproof;
• does not run off vertical surfaces;
• does not lose its original characteristics over time.

Liquid rubber is made on the basis of bitumen, polymers, water and, with rare exceptions, natural rubber. The coating is applied to the cleaned surface by cold spraying.

The two-component formulation cures instantly to create a strong, one-piece membrane. It can be sprayed on the old coating.

Used to apply liquid rubber expensive equipment, and this is a significant drawback of this type of waterproofing.

Roll materials

The surface on which the waterproofing will be laid is pre-leveled with a cement screed or rigid insulation, cleaned and primed with a bituminous primer. After that, roll waterproofing of the roof from:

• roofing material or hydroisol;
• parchment or brizol;
• vinyl plastic or isoplast;
• ecoflex or PVC;
• technoelast, etc.

The canvases are overlapped at least 10 cm along the long edges and 15-20 cm from the ends, and sprinkled with stone chips on top. Rolls are glued or welded across the slope, if it is less than 15%, and along - with a greater slope. It is not recommended to use roll waterproofing with a roof slope of more than 25%. Depending on the type of waterproofing material, the laying technology may vary slightly.

Due to the fact that rolled materials are prone to mechanical damage, they must be laid in 2-4 layers for greater reliability.

Penetrating waterproofing

Liquid formulations of glass, polymers, resins or bitumen are designed for porous surfaces such as concrete or layer cement screed. After application, they penetrate into microcracks, pores and small gaps. Such waterproofing is able not only to resist moisture, it additionally strengthens the base, making it more reliable.

Do not equate the concepts of "flat roof" and "flat roof" with each other. These are different construction terms:

• The roof is a structure that completes the erected building and is divided into pitched, having a large angle of inclination, into a flat one, having a slight slope, which is almost imperceptible.
• Roof - a protective layer that allows the roof to act as a barrier against the influence of rain, snow, hail.

If the roof is not protected from precipitation with roofing materials, the life of any building is reduced many times over. Dampness, fungi, temperature changes cause rotting, corrosion and destruction of any building materials if there is no protection.

The absence of leaks on a pitched roof is ensured by the unhindered removal of liquid along the roofing material due to the large angle of the structure.

A flat roof has no such advantages. There is a possibility of moisture stagnation in the central zone of the structure. If the tightness of the roof is broken, moisture will find gaps and begin a destructive process.

Kinds flat design

The popularity of erecting a horizontal roof over various construction projects is due to its practicality.

Some projects involve the placement of special compositions on the roof:

• terrace for relaxation with appropriate attributes
• paving slabs
• porcelain stoneware slabs on adjustable feet
• swimming pool
• landscaping, including a flower garden or small vegetable garden

For some owners, a flat roof reduces construction costs, given that fewer materials are required to build it.

The climatic features of the building site also dictate their own rules, when the predominance of winds does not allow the construction of pitched roofs due to increased windage and the risk of destruction.

In turn, a flat roof involves two types of construction:

• Traditional. It does not involve the active use of the roof in addition to the protective barrier of the building from the external environment.
• This is a lightweight design, not designed for a large weight load.
• The hydrobarrier is mounted on top of all layers roofing cake and the material can serve as finishing roofs.
• If even a slight use of this type of roof is expected, the waterproofing must be covered paving slabs, terrace board, asphalt concrete.
• Do not forget about the weight load during the operation of a traditional flat roof.
• Inversion, or inverted. It differs in the sequence of laying the layers of the roofing cake.
• Waterproofing is mounted before laying the insulation, which avoids mechanical damage to the material and the formation of leaks.
• Returned if provided additional functions surfaces that are negotiated with the developer at the design stage.
• The design requires correct load calculations so that the roof does not collapse.

Roof waterproofing is important with any type of flat construction. The nuance is only the choice of materials and the method of their installation. For the inversion option, the resistance of the flat roof coating to mechanical stress is important in order to maintain the tightness of the waterproofing layer.

A traditional roof does not require this condition if the developer does not plan to actively exploit it. It is enough to equip several fixed points for preventive maintenance of the roof.

The tightness of the roof is the most important condition for the durability of the building and the comfort of living in it. Currently, the industry produces a wide range of special quality materials, allowing you to perform reliable waterproofing of all types of roofs, regardless of the climatic zone of the location of the building.

Roofing without additional construction measures cannot guarantee tightness, especially for technological and engineering communications. Flat and sloping roofs have their own technology and waterproofing materials.

When choosing specific types of waterproofing, you need to pay attention to the following parameters:

• practicality and economy;
• manufacturability and maintainability;
• safety and environmental friendliness;
• cost and operating time.

Each type of roof has its own architectural features, which affects the materials of manufacture and application technology. To facilitate your choice, we recommend that you familiarize yourself with short list famous brands.

Table. Most well-known manufacturers waterproofing materials.

Prices for waterproofing mastic Bitumast

Materials for waterproofing flat roofs

When choosing waterproofing materials for flat roofs, one should be guided by the provisions of SP 17.13330.2011. According to regulations, on roofs with a slope of 1–6 ° it is allowed to use rolled bitumen and bitumen-polymer materials with protective coating external surface with fine-grained dressing; for roofs with a slope of up to 14°, it is allowed to use waterproofing materials with coarse-grained dressing. Polymer coatings are allowed to be used for flat roofs with a slope of at least 1–3 °.

SP 17.13330.2011. Roofs. Updated edition of SNiP II-26-76. Download file (click on the link to open the PDF file in a new window).

Currently, several types of waterproofing are used for flat roofs.

Prices for coating waterproofing

For example, consider the option of waterproofing a flat roof with the most modern rolled material based on durable synthetic fabrics, a coating with modified bitumen.

Step-by-step instructions for waterproofing flat roofs

Statistics show that approximately 80% of leaks on flat roofs occur not due to the fault of the materials used, but due to technological errors of builders: the wrong choice of waterproofing materials, improper mating angles, poor-quality foundation preparation, bad weather conditions during work, etc. e. The technical indicators of modern waterproofing coatings guarantee operation for at least thirty years, but only if used correctly.

We perform waterproofing of a flat roof (in this case, a garage)

Step 1. Decide on the choice of materials. All roll waterproofing materials are divided into two classes: bitumen and bitumen-polymer. The latter, in turn, can be made from SBS or APP modified bitumen. If the house is located in a region with a warm climate, then choose materials based on APP, they are more resistant to high temperatures and will not leak during heating in the summer. For cold climates better fit material based on SBS, this modification of bitumen retains its elasticity at low temperatures and does not crack in winter period. Calculate the roof area, buy the required amount of waterproofing, taking into account the width of the overlap and overlap. Each roll has a mark indicating the overlapping line of the rows.

What you need for work - waterproofing for a flat roof, bituminous primer, rollers, roofing knives, spatulas, brushes

Step 2 Prepare the base of the roof. On an improperly prepared base, the life of roofing is significantly reduced. What are the requirements for foundations?

Step 3 Prime the roof surface. It is recommended to use bitumen-based materials as primers. The primer must be done carefully, do not leave gaps. Particular attention should be paid to various joints and corners. Prime the vertical elements of the structure to the height of the roll.

Step 4 Start laying the waterproofing layer. The recommended side overlap is at least 8 cm, but each manufacturer can change this parameter. Pay attention to the designations on the rolls, there are special lines or other marks to control the overlap. End overlaps ≈15 cm, while placing them at a distance of at least 50 cm from each other.

Practical advice. Roll waterproofing materials based on bitumen are recommended to be laid in two layers, the second should be done with an offset so that the overlap seam is located in the middle. The permissible distance between the side joints is at least 30 cm.

If you plan to do two layers, then the first should be without sprinkling, due to this, adhesion increases and tightness increases.

Step 5 After the base has dried, roll out the first roll on it. Correct its position, taking into account overlaps and overlaps. If everything is in order, gently roll it up, for relief it is recommended to use metal pipe appropriate length. Be careful not to change the position of the roll during rolling.

Step 6 Cut the protective film and, carefully removing it, begin to roll out the roll.

waterproofing membrane prices

waterproofing membrane

Features of sealing complex nodes

Vertical architectural elements must be even and smooth; piece masonry materials must be plastered. The main waterproofing carpet must be laid on vertical surfaces above the transitional ledge. The first layer without sprinkling should go onto a vertical surface to a height of at least 25 cm, the second with sprinkling by about 10 cm. Horizontally, the overlap is within 15 cm. To increase the reliability, it is recommended to additionally fix the upper abutment line with metal profiles. How to seal the junction of vertical surfaces?

1. Cut off a piece from the roll, its length is equal to the design vertical height plus the design length of the horizontal abutment.
2. Roll the material into a roll and stick it to the place of gluing. Check position.
3. Hold the lower end with your foot or hand, and heat the upper end with a burner. Stick it on as it warms up.
4. Bend the lower end, heat the bitumen and glue the canvas to the first layer of waterproofing.

Practical advice. If the bottom layer has a dressing at the junction, then it must be warmed up well with a burner, and the pebbles should be pressed into the bitumen with a metal flat spatula.

Funnels for draining water should be located at the same distance, at least two drain points should be made in each area. Waterproofing technology depends on their design and manufacturer's recommendations.

Prices for various types of gas burners and blowtorches

Gas burners and blowtorches

Materials for waterproofing pitched roofs

Pitched roofs have a truss system, roofing can be made with soft and hard roofing materials. Waterproofing should be selected taking into account the architectural features of the truss system, the type of roof (warm or cold), the angle of inclination, etc. Another important point – rafter system designed for a certain weight, it is not recommended to increase the mass of the roofing cake. Accordingly, waterproofing for pitched roofs should have a minimum specific gravity. Today in the implementation there are the following types of hydroprotection.

For an example of waterproofing pitched roof consider the option of membrane waterproofing.

Step-by-step instructions for waterproofing pitched roofs

Let's talk about the most complex and expensive technology for installing waterproofing on pitched roofs. In practice, some stages can be skipped, the quality of the roof will not suffer from this.

Step 1. Attach a dropper to the wind boards with self-tapping screws, water from the waterproofing will drain onto it. The dripper is sold as a set with roofing or separately. The specific design does not matter, they all perform their tasks perfectly.

Step 2 Stick butyl rubber tape on the dripper, and a thin double-sided tape on top of it. These elements are needed to securely fix the edge of the waterproofing membrane and prevent it from being torn off by gusts of wind.

Step 3 Start laying the membrane. The edge should be glued to the dropper, the release above the wall should be at least 15 cm. You will have to either leave it in this position, or start all work from the beginning. Fix the membrane to each rafter with a stapler. The number of staples does not have of great importance, in the future, the material will be additionally pressed by a counter-lattice.

Practical advice. In order to facilitate the process of gluing the material to the dropper, it is recommended to temporarily fix the boards to the rafters to support the legs. In the future, they will be removed, in their place a counter-lattice and a crate will be nailed.

Step 4 After the first row of waterproofing is laid, begin to fasten the counter-lattice of slats approximately 20 × 50 mm in size. It is recommended to glue a special sealing tape to the bottom of the rails, it will hermetically close the holes from under the brackets and will not allow water to enter the rafters.

Fasten the counter-lattice with self-tapping screws or ordinary smooth nails. The first type of hardware is currently very popular, but it is expensive and difficult to work with. Professionals always use nails, the fixation strength is enough, the crate will not go anywhere.

Step 5 Attach the crate to the counter-lattice, it is easier to arrive from top to bottom. Before starting work, prepare a hard board, it should rest against the screws. Pay great attention to the stability of this board, do not violate safety regulations.

We have already mentioned that this technology is the most complex and expensive. In practice, builders do not install a counter-lattice. Why? The task of this element is to provide ventilation between the roofing sheets and the waterproofing. We assure you that the battens provide the same effective ventilation. There is no need to waste time and money on additional materials and construction operations.

Video - Flat roof waterproofing

Video - Waterproofing a flat roof garage

The waterproofing layer is the most important part of the construction of the roofing pie. For roof waterproofing, various bitumen, bitumen-polymer materials, membranes, mastics are used. Below we consider the features of these materials, the specifics of their application and the principles of choice.

Types of waterproofing materials

Soft roll materials

This category includes various brands of roofing material. The material is made of roofing paper coated with a layer of bitumen. It is used on roofs with different slopes. Its main advantage is low cost. But the service life of rolled bituminous materials is small - about 5 years, depending on the brand. Other disadvantages of roofing material are that it is highly flammable, and the base of roofing paper is extremely fragile. Under the influence of ultraviolet rays, bitumen loses its elasticity and rapidly loses its waterproofing qualities, so the coating needs to be updated regularly. For the indicated reasons, roofing felt is less and less used in the repair or installation of the roof, replacing it with more modern waterproofing roofing materials.

Bitumen-polymer roll materials

This category includes roll waterproofing made of SBS- or APP-modified bitumen based on fiberglass, fiberglass or polyester. Such a coating is durable, easy to install by welding or mechanical fastening. Polymer additives give bitumen elasticity, increase its resistance to adverse environmental influences and increase the service life of waterproofing up to several tens of years. Pay attention to the structure of the roll roof in the photo.

Bitumen-polymer roll materials can be used for waterproofing the roof of buildings and structures for any purpose. Presented in various price categories- from "economy" to "premium". The material can be laid on any non-combustible even base, including when reconstructing an old roof.

membranes

Roofing membranes are made of PVC-P with the addition of plasticizers. The material is resistant to UV radiation, does not lose plasticity in frost, is easy to install (without fusing), creating a reliable waterproofing coating, vapor permeable. Roofing membranes are more expensive than other waterproofing materials, but the higher price is offset by a long service life (up to 40 years). Are applied at repair and the device of a roof of inhabited, commercial, industrial objects.

Elastic continuous coating based on a two-component mixture. It is applied to the substrate by cold airless spraying. Liquid rubber has good adhesion, full moisture resistance, lasts up to 30 years, it can be used to insulate roof elements with complex relief. The main disadvantage of liquid rubber is the complex installation and the need to use specialized equipment. The waterproofing covering from rubber is not vapor-permeable.

Bitumen-polymer mastics

It is applied in several layers when repairing small sections of the roof, used as coating insulation, sealing joints, cracks, and junctions with them. Used as an additional waterproofing agent when installing the roof. As the main roof waterproofing, bitumen-polymer mastics are not used, since the coating does not form a continuous, stable waterproofing carpet.

Features of the choice of waterproofing material for the roof

To create a reliable waterproofing layer of a roofing pie, bitumen-polymer roll materials and waterproofing membranes are most often used. One of the world's leading manufacturers in this segment is ICOPAL. IKOPAL roll materials for roof waterproofing are produced in two versions: for single-layer and for two-layer roofing systems.

Materials for the top layer of a two-layer roofing system are indicated by the letter "B" in the marking (for example, IKOPAL-V), materials for the lower layer are indicated by the letter "H" (for example, IKOPAL-N).

• For waterproofing a flat roof and a roof with a small slope, it is recommended to use two-layer roof devices roofing systems. They create a reinforced moisture-proof layer of a flat roof.
• For waterproofing a pitched roof, repairing a flat roof, single-layer and two-layer solutions are suitable. Single-layer systems are more affordable from a financial point of view. They are also lighter than two-layer, which reduces the load on load-bearing structure building.
• Both single-layer and two-layer systems can be used as a material for repairing an old roof, reinforcing joints.

Advantages of roll materials from SBS-modified bitumen from ICOPAL:

• The polyester base in IKOPAL bitumen-polymer roll materials is strong and elastic, the waterproofing carpet lasts over 25 years.
• ICOPAL's SBS-modified bitumen protection profile solutions optimize the installation process.
• Roll coating can be laid at any time of the year (in the absence of precipitation).
• Slate dressing on top of the canvas protects the waterproofing carpet from the harmful effects of ultraviolet radiation.

Roof membranes

Membranes are a new generation of roll materials for roof waterproofing. Their service life exceeds 30 years. ICOPAL produces MONARPLAN membranes for roof waterproofing, which consist of three layers: two layers of plasticized elastic polyvinyl chloride and fiberglass (or polyester) between them to give the material strength.

Advice. If you are using the membrane to repair an existing roof, please note that membrane roll materials cannot be laid directly on the old layer of bituminous waterproofing.

Advantages of MONARPLAN membranes from ICOPAL:

• They have a low level of water absorption.
• Form a stable homogeneous coating.
• They have vapor permeability, which prevents the accumulation of condensate drops in the roofing cake.
• Tear resistant.
• Lungs - about 2 kg per sq. m (depending on the brand of membrane coating), do not create an excessive load on the supporting structure.
• Installation can be carried out at any time of the year, without the use of an open flame.
• Resistant to UV rays, temperature extremes, mold and mildew.
• They have a wide range of applications, suitable for roofing, underground waterproofing.
• Repairable.

In the MONARPLAN line from ICOPAL there are several types of roofing membranes for waterproofing an operated and non-operated roof, a “green roof” device.

Recommended. To simplify the installation of the roofing membrane and create the most reliable waterproofing, including on difficult sections of the roof, additional materials from the MONARPLAN series will help: metal sheets for fastening, a membrane sheet for waterproofing junctions, lining to reinforce corners, etc.

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