What are the seams on the roof coated with. Sealing pipes and seams on the roof

Roofing can be made of various materials, but sealing is required. This applies to roofs with a slight slope. It is also important to seal all joints. This will extend the life of the roof. The use of various mixtures should be regulated by their characteristics and features. Different types of sealant are used for different roofing materials. Now let's figure out what are sealants?

Sealants in the construction of the roof are used to treat the roof. This allows you to eliminate all the shortcomings and seal difficult areas. The selection of a sealant should be carried out according to several characteristics, including the temperature regime and the ability to deal with negative external factors(humidity, water, direct sunlight). Each material has its own scope, so the choice must be justified by the requirements of the construction work.

silicone or rubber

Silicone (rubber) sealant is universal remedy for construction work on the roof.

This is possible due to its advantages:

• has a high level of adhesion with most materials;
• elastic;
• water resistance, heat resistance, including in direct sunlight and when the roof is heated to high temperatures;
• does not react to ultraviolet;
• hardens quickly;
• handles temperature fluctuations with ease.

Silicone has disadvantages:

• painting with ordinary dye is not possible;
• can not be applied to a wet surface;
• not fully compatible with polymeric materials.

The last point applies to vertical use as well as high angle applications.

Versatility is manifested in the field of application. Silicone can be used in any environment and in any construction process. Sealing is very fast. 30 minutes is enough for complete hardening. For this reason, silicone sealants are used very often.

Another important feature is that it can be applied without mixing with other substances before use, that is, in a tube or bucket, the sealant is already ready for use. After application, wait for hardening and apply the next seam. Elasticity allows the sealant not to crack and stretch, so there are no problems with it in the construction process.

There are two types of composition that differ in their characteristics:

• the acetic or acetate type of sealant has a pungent odor that disappears after a short period of time after drying. This type is more durable and has enhanced performance. The only negative is the increased toxicity;
• the neutral type is used in residential areas, since the toxicity is much lower and there is no smell. For small blood sealing requirements, a neutral type mixture can be used. Even under the condition of its lesser strength.

Before applying silicone sealant, the surface must be dried after cleaning. Otherwise, the sealant will not be able to obtain the required level of adhesion to the material.

The use of silicone composition significantly reduces the time of construction work, and also provides good level sealing even in hard-to-reach places on the roof.

Bituminous

Bituminous sealant should only be used for outdoor construction work due to increased levels of toxicity. Processing with such a composition of the roof allows you to obtain the required level of sealing. Bitumen can be derived from oil and shale.

Also it can be added polymer materials. The basis for the use of bituminous sealant is steel and metal, that is, processing with this sealant is mainly used for metal surfaces. At the same time, other materials also have good adhesion with such a composition.

Among the advantages are:

• affordable price;
• compatibility with various materials;
• is not afraid of a wet surface and has water resistance;
• the operational life of the sealant is almost 20 years;
• metal surfaces do not corrode;
• mold and warp resistant.

Bitumen also has significant disadvantages:

• cannot be used indoors;
• low level of heat resistance and flammability;
• poorly grasps the material on a porous surface.

The main application is the insulation of the roof at the seams and joints, as well as the sealing of the exterior seams of the house.

Unlike silicone sealant, it has features in the construction process:

• when cleaning the surface, porous places are pre-treated with a primer and dried;
• obligatory work in gloves;
• for small volumes, a gun or cartridge is used, and for large volumes, a trowel.

When working with bitumen, it is required to lay a second layer or proceed with further work only after the first layer has completely dried.

It is important that the treatment surface can not be dried in the rain. Bitumen has a good level of adhesion even at high moisture concentrations.

Acrylic

Acrylic type sealant is made on water based therefore considered the most environmentally friendly option. For construction work with the roof, special types of sealant are used, including waterproof, frost-resistant. acrylic material resistant to any atmospheric phenomenon.

For resistance to temperature extremes, silicone-based acrylic sealant is used, but this type has a very short service life - about 3 years.

According to the roofing materials, the use of acrylic for corrugated board and metal surfaces can be excluded. The main place of application of the acrylic composition are internal seams. Pros:

• environmental friendliness;
• light staining;
• resistance to sunlight, in particular to ultraviolet;
• water resistance;
• fast curing process.

Acrylic also has disadvantages that should be considered:

• temperature regime below -15° destroys the seal;
• painting is required, as it allows you to extend the service life;
• the surface of the place of application is carefully processed.

The color of the acrylic composition can be of two types: white and transparent.

All additives to acrylic sealant change its properties, so when buying, you should make sure that the composition is really suitable for the required job.

The basis of application is a joint and a seam located between two sheets. Also, the greatest efficiency is manifested with a potential high physical load in working with concrete or brick.

polyurethane

The polyurethane type of sealant is very common. To standard types includes mounting type foam. This type of sealant has good waterproofing properties and high adhesion (adhesion) with various materials. The standard type of sealant is used only in places protected from the sun.

Modified versions of the sealant with the addition of a number of substances can be used in direct contact with them. sun rays as well as ultraviolet.

In most cases, polyurethane sealant is used for the metal surface of the roof.

For roofing, a liquid composition is mainly used, which can be applied by any method, including a simple brush or roller. The liquid composition has a service life of at least 15 years and good water resistance.

Among the advantages are:

• high strength and elasticity;
• a small degree of susceptibility to various atmospheric influences;
• possibility of application with any roofing material;
• good water resistance and resistance to low temperatures;
• the material is durable, although it has a rapid hardening.

Cons of using:

• sealant of this type has a high cost in relation to other options;
• standard polyurethane-type sealants are detrimental to ultraviolet;
• high temperatures make the seal unstable and destroy it.

The application is determined by the level of hardness:

• 15 units are used for metal, concrete, wood and plastic joints. The basis of application is interior decoration;
• 25 - used for moisture resistance of sites;
• 40 - glass and reinforced concrete structures. Sealing of seams for these materials;
• 50 - construction with metal-based materials;
• 60 - automotive and shipbuilding.

Also, the sealant differs in surface moisture:

• polyurethane sealants intended for dry surfaces are one-component, that is, mixing before use is not required;
• for increased moisture levels, a two-component, mixed before application, is used. Before applying this type of sealant, it is necessary to mix polyesters and hardener.

The two-component composition is a higher quality product that has enhanced characteristics, but it also costs more than the standard form.

Polyurethane sealant is used in various construction work, but for the roof, special compounds are used that are resistant to external influences.

Tape sealant

For corrugated board, a butyl rubber-based tape-type sealant is often used. Its use is very common, especially with double-sided application, since the tape can be double-sided. The tape has high strength and reliability, and also has increased resistance to all external influences. Including chemical and temperature type.

The sealant may be in the form of a cord or tape. It all depends on the required joint sealing width, since it is very easy to choose the size.

The spread is facilitated by the possibility of using with various materials. You can also find a liquid version of the tape, which is applied with a spatula.

Application advantages:

• very simple use;
• waterproof and resistant to sunlight;
• hardens quickly and forms a strong bond.

Among the minuses, one can single out the destruction of sealing at temperatures above + 90 °, therefore it is better not to use sealant on metal surfaces on the roof. The process of applying a liquid type sealant is also distinguished by its complexity, since the surface to which the tape sealant will be applied must be completely cleaned before use.

For metal roofing

Metal roofing requires the use of a synthetic or polyurethane sealant, as these are the most suitable for the requirements.

Requirements:

• adhesion to a metal surface;
• vibration resistance;
• immunity to atmospheric phenomena, including rain;
• resistant to ultraviolet radiation and direct sunlight.

Before processing, it is required to completely degrease and dry the surface. Particular attention is paid to joints located at an inclination of more than 14 degrees.

All sealants used in the processing of metal surfaces must have a high level of elasticity and water resistance.

For corrugated roofing

When sealing corrugated board, several features of this process should be remembered. Decking is processed in a certain order:

• joints are checked. They must be clean and dry;
• sealant is applied in a layer of 3 millimeters. Uniformity is important;
• the construction process requires a positive temperature regime and the absence high humidity air.

For corrugated board, butyl rubber or polyurethane tape is usually used.

For soft roof

For a soft type of roof, mastic is used, since large-scale sealing is required. Mastic can be bituminous or emulsion, as well as a liquid rubber composition.

Application different types mastic depends on the characteristics of the slope and the requirements:

• the elimination of seams is carried out by sealing roofing tapes;
• with a flat roof or a small angle of inclination, bitumen is used;
• local repairs are made with liquid rubber or a waterproof compound.

When applying mastic, the surface does not have to be dried, since this type of sealant has good tenacity with any concomitant factor.

For metal roofing

Silicone sealant is used for metal tiles. This is due to the fact that silicone is not susceptible to sunlight and ultraviolet radiation. Also, silicone easily penetrates into cracks with a size of less than 5 millimeters. When sealing, it is necessary to carefully handle all roofing devices, including joints with the chimney pipe and all seams of the roofing carpet.

For metal tiles, it is required to select sealants with good heat resistance. Good adhesion to the material is also important.

Two-component sealants

For roofing, two types of two-component sealants made of polyurethane and silicone are used. This type of sealant has increased strength and characteristics. The cost is also higher than standard types of sealant. The mixing of the two components - the base and the catalyst - is carried out immediately before the construction process, since the reaction is very fast, which allows the material to harden very quickly.

Incorrect mixing of components leads to a decrease in quality.

The two-component sealant has improved characteristics compared to other substances, including increased strength and durability.

The usual composition can last up to 15 years, if the concentrations were not violated when mixing the catalyst and the silicone or polyurethane base.

What are the most common mistakes and how to avoid them

When applying, it is worth using one type of sealant, as the mixture may worsen General characteristics. It is also worth remembering that the roof is treated with substances that are more durable than those used indoors.

Each type of processed material requires individual approach, as well as each scope of application of sealants is strictly limited.

During the construction process, it is worth choosing the composition that will allow the roof to remain intact for long term. The use of cheaper materials will only aggravate the situation, so after a short period of time the construction process will have to be repeated. At the same time, part of the roof may already be damaged by secondary factors, including mold or rust.

Conclusion

For each type of roofing, a different sealant is used. At the same time, each sealant of even one type has its own special characteristics that are associated with the composition. When using the right building material, the roof will receive the required qualities and gain durability.

One of the most important measures during any construction is the reliable sealing of the roof. Much depends, of course, on the quality of the roofing and the way it is laid.

But this alone is not enough - all at least slightly vulnerable areas must be carefully isolated from moisture.

For this, there are special hermetic compounds for. A competent choice of the right tool will ensure proper processing of any type of roof. After its application, the roof will not let moisture through, it will be more durable and maintainable.

Exist different types sealing agents. They are used in the process of repair and planned work, as well as during construction.

It can be completely different construction and finishing activities:

• sealing joints between individual elements, such as roofing sheets, especially for roofs with a slight slope;
• elimination of gaps near ventilation shafts, chimneys and drains, antennas and other objects that violate the integrity of the coating;
• liquidation ;
• insulation of joints between the roofing itself and other materials;
• sealing of inclined skates;
• quick relief from leaks.

All existing sealants are conditionally divided into six main types. Let's consider each of them in more detail.

1. Tape

What are the main advantages of tape sealant? After all, this product is one of the most effective and inexpensive for roof protection.

Benefits this material quite a few:

• excellent moisture resistance;
• good elasticity;
• affordable price;
• the possibility of painting under the general color of the roof;
• durability and excellent strength;
• excellent grip on dry and wet surfaces.

This type of sealant is most often used for work with metal roofing (and so on), roofing material and.

Their disadvantages are poor resistance to high temperatures and rather high toxicity.

3. Silicone

These are various viscous plastic pastes, for which binders are combined with various fine fillers (soot, graphite, talc, etc.) and special additives.

Depending on the components included in the composition (rubber, resins, plasticizers), a mastic of one quality or another is obtained, which has the required characteristics. For waterproofing, bituminous mastic is mainly used, and as its more expensive counterpart, polymer.

The latter has higher adhesive properties and, in addition, it is more elastic. It is more preferable for mounting soft ( roll materials). Before applying any mastic, the work surface must be well cleaned of dirt and dust.

Sealant selection

How to find out which particular sealant is suitable for each individual case?

Different types of sealants differ markedly in their working qualities. Some types can be ideal for a certain type of coating, and be practically unsuitable for a completely different one.

Consider the most popular of them, suitable for different types roofs.

Metal roof sealants

For roofing of this type, products with the following qualities are required:

• reliable coupling with metal;
• high rate of elasticity;
• good resistance to vibrations;
• weather resistance.

These characteristics are most consistent with bitumen-rubber sealants and polyurethane, which are able to maintain high plasticity throughout the entire operational period. Before starting processing metal coating the places of application of the substance must be well degreased and dried. In the event that the roof needs urgent insulation, a composition that can be applied to a damp surface is best suited.

It is important to know that the use of silicone insulation on an iron roof can be a direct cause of rust.

In terms of its qualities, corrugated board is very similar to metal tiles.. Therefore, their sealing is carried out in a similar way. The most acceptable roof slope should be 14 degrees. The transverse joints of profile sheets should be given special attention. For such a roof, silicone and polyurethane sealants are most suitable for their performance.

Roof sealing from corrugated board

To carry out competent sealing of a roof made of corrugated board, it is important to do the following.

1. Before starting the procedure, check the joints - you can only work with dry and clean surfaces.
2. Apply sealant to the corrugated board in an even layer about 3 mm thick. You can use polyurethane tape.
3. All events are held at a positive temperature and with relative dryness of the air.

Metal roof sealing

When choosing a sealant for, for all its similarity with corrugated board, it is important to consider the following:

1. the best end result is obtained when using silicone, which has increased resistance to ultraviolet radiation;
2. silicone sealant is suitable for gaps no more than 5 mm;
3. do not forget to treat the ventilation outlets, the edges of the pipe apron, the antenna outlet, the longitudinal and transverse joints of the roofing carpet itself with a mixture.

Sealant for soft roof

Or, in other words, soft tiles, has always been considered a very popular and popular coating. For its large-scale sealing, one of the types of mastic is usually used.

In other cases, many additional factors are taken into account, for example:

• special sealing roofing tapes are excellent for eliminating joints and seams;
• if the roof is almost or completely flat, then an emulsion is suitable for it;
• for local repair of individual defects and leaks, it is good to use either an elastic waterproof composition;
• mastic is well applied to any surface, even wet, has excellent adhesion with many of the most different materials, does not form blisters.

When choosing the roofing sealant you need, read all the labels on the package.

It indicates the possibility of curing in a humid environment, setting speed, compatibility with other materials, the possibility of subsequent painting, resistance to atmospheric precipitation.

All this is important to you, so pay attention to it. A competent choice will help you choose the right composition for insulation, and strict adherence to technology guarantees the reliability of the protection carried out. To do most of the work yourself, theoretical knowledge and a little practical experience are usually sufficient.

If you are still in doubt, contact a specialist. They will be able not only to give advice on which product is suitable in a particular case, but if necessary, they themselves will perform reliable and high-quality waterproofing.

One of the largest manufacturers of roofing materials in Russia is the TechnoNIKOL company. The specialists of the company have created a completely the new kind shingles (Shinglas). TechnoNIKOL soft roofing is in demand in the low-rise construction market. The high quality of the products is evidenced by the quality certificate, namely ISO 9001.

Currently construction market offers 4 main types of roofing sealants.

This sealant has a number of characteristic features:

Among the shortcomings, one can single out poor resistance to high temperatures and the base color of the material is black.

Important! because of high level toxicity, bituminous sealant cannot be used inside a dwelling.

rubber or silicone

This type of sealant is far from the last in the list of the highest quality:

Tape

Tape sealant is one of the most profitable and effective options for roofing:

1. The basis of such material is butyl rubber.
2. Sealant tapes perfectly resist low temperatures and ultraviolet;
3. Easy to install, thanks to high adhesiveness: just put the tape on the surface and press it down.
4. Tape sealants are used for sealing between roofing sheets, chimney and roofing, fixing heat insulators, repairing cracks and rusty coatings.

polyurethane

This sealant gives more possibilities due to its properties:

Important! Not only is polyurethane sealant the best among other types today, it is also versatile: it can work with metal structures, wooden and tiled roofs.

For different types of roofs, there are appropriate sealants that, due to their advantages and disadvantages, can be ideally suited for one type of roof, and for another, their effectiveness will be zero - and vice versa.

For metal roofing

For sealants metal roofing there are a number of requirements:

• high elasticity;
• excellent adhesion to roofing materials;
• increased resistance to vibrations;
• low water absorption;
• weather resistance.

Bituminous and polyurethane sealants do an excellent job with these tasks. To seal the seams of a metal rabbit, the surface must first be degreased and the surface cleaned, dried, and only then applied sealant.

Silicone sealants should not be used on metal roofs, they cause rust.

For corrugated roofing

The properties of corrugated board resemble metal tiles: their sealing is similar: it is carried out with a roof slope of up to 14 degrees, while protecting horizontal and vertical joints of profiled sheets.

Sealing the joints of corrugated board is carried out according to the rules:

• when choosing a sealant, you should pay attention to polyurethane, acrylic and silicone samples - they give the best results, being excellent waterproofing agents;
• before sealing, check the joints - they must be dry and clean;
• the sealant is applied in an even layer of several millimeters, most conveniently - extruded or in the form of a polyurethane tape;
• it processes joints, bolt attachment points and other unreliable parts of the structure;
• the sealing process lasts 1-2 days and depends on the temperature and humidity of the air.

After drying, the sealant becomes durable rubber material protecting joints and connections from moisture.

Important! Sealing with the valley is carried out with a special profiled seal. Roofing sealant is used to process the seams of the overlays of roofing exits and the junction of the flooring itself to vertical walls.

For metal roofing

With its similarity to corrugated roofing, metal tiles have sealing features:

• for gaps up to 5 mm, silicone sealant is used or, as a temporary measure, aluminum butyl tapes;
• as a sealant option - professional gaskets that repeat the geometry of the flooring;
• for a more reliable result, use ultraviolet-resistant silicone;
• sealant is used to process the joints of the roofing carpet, exits (ventilation, antenna), the edge of the apron chimney, its joint with roof sheets;
• with a roof slope of up to 14 degrees, the longitudinal and transverse joints of metal tile sheets are sealed.

Sealant for soft roof

To date soft roof- one of the most popular types of coverage. Its sealing goes like this:

• for a flat roof, liquid rubber is used - a bitumen-polymer emulsion or mastic;
• for spot repairs, one-component liquid rubber is ideal - vapor and waterproof, elastic sealant;
• coating rubber is suitable for repairing sealing and waterproofing joints and seams;
• mastic for sealing can be applied to the surface of any humidity, has excellent adhesion to all materials and does not form swelling during operation.

Roof sealant "Titan"

Titanium is a one-component plastic sealant based on bituminous rubber. It has a high degree of adhesion to wet and dry surfaces: aluminum, bituminous, metal tiles, roofing iron. Does not run off walls and is highly weather resistant.

This sealant is used for:

• sealing and updating seams and openings of all roofing surfaces;
• sealing leaks on the roof of bitumen, tiles, sheet and corrugated iron;
• reinforcement of fasteners for roof windows and parts of the drain.

Two-component roofing sealant

The basis of the two-component sealant is silicone rubber. It differs from the previous vulcanization time and properties:

• made in mastic, in vacuum;
• easy to apply;
• application temperature - from -20°С to +40°С;
• operating temperature – from -60°С to +70°С.
• has excellent adhesion to wood, metal, brick, pvc, concrete;
• the seam is strong and uniform.

Prices for roofing sealants

The price of a sealant varies depending on its characteristics and manufacturer. A 300 mm pack of sealant will cost on average:

• bituminous - from 196 rubles;
• polyurethane - from 155 rubles;
• silicone - from 160 rubles;
• tape - from 135 rubles.

Video

From this video you will learn how to choose the right sealant for various types of roofing. A roofing expert speaks.

Roof sealing is the most important aspect of building and operating any premises. high quality sealant and correct installation provide durable and comfortable use of the roof.

One of the key points in building a house is the sealing of the roof.

It is not enough to lay the roofing correctly, it is also necessary to reliably isolate problem areas (joints, areas where additional elements are located) from rain and snow “hello” from the heavenly office.

• for isolation from penetration of atmospheric moisture;
• to provide thermal insulation and waterproofing;
• to eliminate cold bridges;
• protection of threaded connections against corrosion;
• to extend the life of the roof structure.

Basically, problem areas of the roof are exposed to such safety methods:

• gaps between roofing sheets;
• joints of tent-shaped roofs;
• between corrugated board and support beam;
• in places of overlap of roofing materials;
• joint of roof and chimney;
• roof attachment points;
• fixing roofing materials, such as insulation and films.

Materials used to seal roofs include sealing tapes, polyurethane foam roof seals, and liquid rubber-based viscous sealants.

Viscous roofing sealants

Liquid sealants are divided into 4 categories, depending on the basis on which they are made:

Scheme of sealing the junction of the roof to the chimney.

• silicone;
• acrylic;
• polyurethane;
• bituminous.

Silicone sealant is a versatile material. It is widely used not only for sealing the roof, but also for working with glass, wood, and ceramics. Silicone sealant has gained popularity as it is used in PVC installation windows and doorways. It is resistant to temperature extremes and UV radiation. This material is excellent for sealing roof joints. For these purposes, there is a special type of it: roofing sealant.

Acrylic sealant is most often used to close joints in walls, windows, floors; to repair cracks. This material is rarely used for outdoor work, as it is not elastic enough.

Polyurethane sealant, unlike the previous one, is ideal for outdoor use. It is used to glue wooden products, stone, concrete, metal and other materials. This sealant is great for roofs, especially for minor repairs.

Bituminous substance, unlike previous sealants, is indispensable for roofing and other outdoor work. It is resistant to atmospheric precipitation, the sun and to the chemical attack of such materials: various oils, solvents, gasoline. The only drawback of this material is that it is toxic, it is based on modified bitumen. That's why interior work using bituminous sealant cannot be done.

Sealing tapes

One of the most economical and effective method sealing joints of the roof are tapes based on butyl rubber. They have all the necessary qualities:

The polyurethane sealant forms an elastic joint that prevents moisture from entering the building.

1. Butyl tapes are resistant to low temperatures and ultraviolet. Liquid sealants can harden and crack when exposed to atmospheric conditions. Sealing tapes do not have this property. Therefore, the service life of these materials is much longer than that of their counterparts.
2. Ease of installation. To attach the tape to the desired surface, it is enough to simply attach and press down. This ease of use is due to the good adhesiveness of the material.

The range of tapes is quite diverse. The most popular are KISO tapes.

KISO-358 Tape is a butyl rubber material with adhesive applied on both sides. Because of this, the tape is excellent for sealing the joints of roofing sheets. If the roof is covered with corrugated board, the sheets of which overlap, then the tape is glued to the border of the sheets: between the previous and the next. This action serves as an excellent barrier against water leakage between the roofing sheets.

The scheme of sealing the side seams between the profiled sheets using butyl rubber tape.

This tape is perfect for fixing roofing films and other thermal insulation materials. It does not leave gaps, which prevents the loss of heat and moisture in the room.

KISO-501 is another type of sealing tape that has adhesive on one side and aluminum foil on the other. This material is intended for repair work such as: closing small holes, crevices, rusty places.

The tape is used to seal the space between roofing material and chimney. Also, this self-adhesive material perfectly protects fasteners from corrosion and cracks. To do this, the place of fastenings is covered with tape, which isolates the penetration of moisture.

Roof seals

Roof seals are used to protect the under-roof space from rain, snow, debris and dust. They are fastened at the joints and junctions of the roof elements to the supporting structure.

Rigid seals follow the shape of the profile of the roofing sheet, due to which they adjoin the metal tile without gaps. Thus, seal profiles exist different shapes: direct and reverse (upper profile wave or lower wave).

The scheme of sealing the end sides of profiled sheets using butyl rubber tape.

These seals are made from polyethylene foam. high pressure(PVD), in which the cells are closed. LDPE seals create a fairly complete seal, which excludes ventilation of the roof. For the necessary circulation of the roof, ventilation holes are made in the seals.

Rigid seals are used at the junction between the ridge, at the junction of roofing elements to the wall, roofing accessories to metal tiles. For each type of corrugated board and metal tiles, eaves and ridge seals of the appropriate shape are produced.

LDPE seals have good moisture resistance, resistance to chemical attack and combustion.

Soft sealant is universal: it can take any shape, and therefore it can be placed anywhere on the roof. It is a rectangular profile 40 x 50 mm and 1 m in length. This material is made of expanded polyurethane foam. This seal provides sufficient ventilation due to its good porosity. It absorbs moisture and vapor well. interior, but rainwater and snow does not pass inside.

Thus, the soft seal serves as a barrier against roof leakage and at the same time does not interfere with normal air circulation.

This material is self-adhesive. Enough to take off protective layer from the adhesive side of the seal and press it tightly, for example, to the roof ridge. That is, such a sealing material is indispensable for sealing the joint between the ridge and the metal tile.

Sealing with this material can also be carried out in light frost. It is wear-resistant and resistant to the effects of fungi and burning.

Roof sealing is the key to a long service life of the roof without leaks.

Roof sealing: sealant materials

Roof sealing protects the room from moisture penetration. The following materials are used: sealing tapes, roofing seals, viscous sealants.

Roof sealant, how to cover it up so that the roof of the house does not leak

One of the most important measures during any construction is the reliable sealing of the roof. Much depends, of course, on the quality of the roofing and the way it is laid.

But this alone is not enough - all at least slightly vulnerable areas must be carefully isolated from moisture.

For this, there are special hermetic compositions for the roof. A competent choice of the right tool will ensure proper processing of any type of roof.

After its application, the roof will not let moisture through, it will be more durable and maintainable.

Varieties of roofing sealants

There are various types of sealants. They are used in the process of repair and planned work, as well as during construction.

It can be completely different construction and finishing activities:

• sealing joints between individual elements, such as roofing sheets, especially for roofs with a slight slope;
• elimination of gaps near ventilation shafts, chimneys and drains, antennas and other objects that violate the integrity of the coating;
• elimination of cold bridges;
• insulation of joints between the roofing itself and other materials;
• sealing of inclined skates;
• quick relief from leaks.

All existing sealants are conditionally divided into six main types. Let's consider each of them in more detail.

1. Tape

Its merits are as follows:

• very resistant to sunlight and negative temperatures;
• the possibility of quick and convenient replacement;
• excellent mechanical strength;
• ease of application;
• sealed and durable layer of bitumen;
• long-term operation.

This tape material is convenient to use for emergency repairs of bituminous roofing (in the form of neat patches), for sealing vapor barrier films, for repairs drainage systems and metal roofs, for sealing junctions.

This tape is very simple and easy to use. Therefore, it can be used without problems by people who do not have any building experience. Like ordinary tape, this tape is fixed at the joints and seams.

2. Bitumen, rubber

This material has many advantages.:

• excellent moisture resistance;
• good elasticity;
• affordable price;
• the possibility of painting under the general color of the roof;
• durability and excellent strength;
• excellent grip on dry and wet surfaces.

This type of sealant is most often used for work with metal roofing (metal tiles, corrugated board, etc.), roofing material and tiles.

Their disadvantages are poor resistance to high temperatures and rather high toxicity.

3. Silicone

Silicone mixtures are packaged in standard guns or buckets. From large containers, they can be applied with a construction roller or a special advanced spray gun.

This variety is one of the most affordable and common on the market.

All silicone products can be divided into neutral and acetate (acetic). The former are less toxic, have no odor, but are inferior to the latter in terms of strength.

• multifunctionality;
• fast hardening;
• good resistance to sunlight and temperature fluctuations;
• can be used for both long-term and temporary isolation.

4. Acrylic

Acrylic mixtures resemble high-quality silicone, but their prices are more affordable. The surface to be applied must be perfectly dry.

• no irritating odor;
• excellent grip with coating;
• no solvents in the composition;
• on sale has a wide range of colors.

Classic acrylic sealants do not have the best waterproofing properties, since they are based on a water-soluble dispersion.

If you decide to use this particular tool, then it is recommended to strengthen the protection with tape to seal joints and seams.

5. Polyurethane

For the manufacture of polyurethane sealant, a resin is used, which in special conditions going through the polymerization process.

The resulting mixture, viscous and light, is easy to apply to any type of surface.

But all these minuses are compensated by its remarkable working qualities.

This type of sealant has the following characteristics:

• durability;
• ease of application;
• excellent resistance to corrosion, mechanical stress and high humidity;
• high efficiency;
• fast curing;
• maintaining working qualities even at low temperatures.

It combines perfectly with any type of roofing material, providing a reliable and durable insulation that can be considered ideal.

6. Two-component

The basis of a two-component mixture is usually silicone rubber. It is represented by a special hardener and adhesive paste.

Individually, the composition can be stored for a very long time (in accordance with the specified period). But after mixing it starts to go chemical reaction, therefore the mixture must be used within a certain specified time.

What can such compositions boast of?

1. The seam after application is smooth and even.
2. The widest temperature range for preserving the properties of the product is from - 70 to + 70 degrees.
3. Very easy to apply.
4. They have excellent adhesion to the main building materials– brick, wood, metal, PVC, concrete, etc.
5. It can be applied both in winter and summer: the temperature for application is from -25 to +40 degrees.

Mastic for roofing

In addition to all of the above compositions, so-called mastics can also be used to seal the roofing.

These are various viscous plastic pastes, for which binders are combined with various fine fillers (soot, graphite, talc, etc.) and special additives.

Depending on the components included in the composition (rubber, resins, plasticizers), a mastic of one quality or another is obtained, which has the required characteristics. For waterproofing, bituminous mastic is mainly used, and as its more expensive counterpart, polymer.

The latter has higher adhesive properties and, in addition, it is more elastic. It is more preferable for installation of a soft roof (rolled materials). Before applying any mastic, the work surface must be well cleaned of dirt and dust.

Sealant selection

Different types of sealants differ markedly in their working qualities. Some types can be ideal for a certain type of coating, and be practically unsuitable for a completely different one.

Consider the most popular of them, suitable for different types of roofs.

Metal roof sealants

For roofing of this type, products with the following qualities are required:

• reliable coupling with metal;
• high rate of elasticity;
• good resistance to vibrations;
• weather resistance.

These characteristics are most consistent with bitumen-rubber sealants and polyurethane, which are able to maintain high plasticity throughout the entire operational period. Before starting work on the processing of a metal coating, the places of application of the substance must be well degreased and dried. In the event that the roof needs urgent insulation, a composition that can be applied to a damp surface is best suited.

In terms of its qualities, corrugated board is very similar to metal tiles.. Therefore, their sealing is carried out in a similar way. The most acceptable roof slope should be 14 degrees. The transverse joints of profile sheets should be given special attention. For such a roof, silicone and polyurethane sealants are most suitable for their performance.

Roof sealing from corrugated board

To carry out competent sealing of a roof made of corrugated board, it is important to do the following.

1. Before starting the procedure, check the joints - you can only work with dry and clean surfaces.
2. Apply sealant to the corrugated board in an even layer about 3 mm thick. You can use polyurethane tape.
3. All events are held at a positive temperature and with relative dryness of the air.

Metal roof sealing

When choosing a sealant for a metal roof, for all its similarity to corrugated board, it is important to consider the following:

1. the best end result is obtained when using silicone, which has increased resistance to ultraviolet radiation;
2. silicone sealant is suitable for gaps no more than 5 mm;
3. do not forget to treat the ventilation outlets, the edges of the pipe apron, the antenna outlet, the longitudinal and transverse joints of the roofing carpet itself with a mixture.

Sealant for soft roof

Flexible roofing, or, in other words, soft tiles, has always been considered a very popular and popular coating. For its large-scale sealing, one of the types of mastic is usually used.

In other cases, many additional factors are taken into account, for example:

• special sealing roofing tapes are excellent for eliminating joints and seams;
• if the roof is almost or completely flat, then bituminous mastic or emulsion is suitable for it;
• for local repair of individual defects and leaks, it is good to use liquid one-component rubber or an elastic waterproof composition;
• mastic is well applied to any surface, even wet, has excellent adhesion to a wide variety of materials, does not form blisters.

It indicates the possibility of curing in a humid environment, setting speed, compatibility with other materials, the possibility of subsequent painting, resistance to atmospheric precipitation.

All this is important to you, so pay attention to it. A competent choice will help you choose the right composition for insulation, and strict adherence to technology guarantees the reliability of the protection carried out. To do most of the work yourself, theoretical knowledge and a little practical experience are usually sufficient.

If you are still in doubt, contact a specialist. They will be able not only to give advice on which product is suitable in a particular case, but if necessary, they themselves will perform reliable and high-quality waterproofing.

How to choose a roofing sealant for reliable roof protection

Roof sealing is one of the most important stages in construction. Laying a high-quality coating is not enough - it is also necessary to isolate all vulnerable areas from moisture. Special roofing sealants are designed for this - their wide selection will help to qualitatively process any roof, ensuring its strength, moisture resistance and maintainability. Sealing layers are applied both directly to the joints and seams of the coating, and under the roof itself.

The main types of sealants for roofing

Sealants are used both during the construction process and during scheduled and urgent repairs. It:

• elimination of seams between sheets (or other elements) of roofing, especially on roofs with a slight slope;
• sealing joints between roofing and other materials;
• elimination of cracks in the area of ​​chimneys, drains, ventilation shafts, antennas and other elements that violate the integrity;
• processing of inclined skates;
• insulation of cold bridges;
• fast leak repair.

Manufacturers offer six main types of roofing sealants. Let's consider each of them in detail.

Sealing tapes - easy to use

Tape sealant is one of the cheapest and most actionable solutions to protect the roof. Its main advantages:

• good resistance to low temperatures and sunlight;
• ease of application;
• convenient and fast replacement;
• thick and sealed bituminous layer;
• high mechanical strength;
• durability.

The tape is widely used as patches when repairing bituminous roofing, for isolating joints, sealing vapor barrier films, repair of seam metal roofs and drainage systems.

Roof sealing tape as a waterproofing is well suited for people without building experience, it is applied to the seams and joints like construction tape.

Bituminous sealant - the best choice for metal roofing

Bituminous sealant is mainly used for sealing metal roofing (corrugated board, metal tiles and other varieties), tiles and roofing material. Among the shortcomings, high toxicity and slight resistance to high temperatures can be noted, but it also has a number of advantages:

• the possibility of coloring the color of the roofing;
• excellent moisture resistance;
• high strength and durability;
• elasticity;
• high-quality coupling with both wet and dry surfaces;
• nice price.

Rubber and silicone sealants and their properties

Silicone mixes are sold both in standard gun packs and in buckets for use with an advanced spray gun or builder's roller. This type of sealant is one of the most common and affordable on the market.

The main arguments in favor of the choice:

• multifunctionality;
• resistance to temperature fluctuations and sunlight;
• fast freezing;
• suitable for temporary and long-term isolation.

Silicone compounds are divided into acetic (acetate) and neutral. The latter are significantly inferior in terms of strength, but are less toxic and do not have an unpleasant odor.

Acrylic compounds for sealing the roof

Acrylic mixtures are similar in properties to high quality silicone, but have more affordable prices and require ideal dryness of the treated surface.

• there are no solvents in the composition;
• has no smell;
• on the market are presented in a wide range of colors;
• excellent adhesion to porous coatings.

Classic acrylic-based sealants differ not in the most the best waterproofing, because they are based on a soluble aqueous dispersion. If, nevertheless, you chose them, then you additionally need to use tape to seal the seams and joints of the coating.

Polyurethane mixtures - simple and fast

The polyurethane composition is based on a resin polymerized under special conditions. The result is a viscous and viscous mixture that is easily applied to any surface. This type of sealant is the most toxic and the most expensive, but the cost is more than offset by the high quality and effectiveness. Its advantages:

• work at the lowest temperatures;
• increased resistance to mechanical stress, moisture, corrosion;
• fast freezing;
• ease of application;
• efficiency;
• durability.

Polyurethane roofing sealant is compatible with any material, it creates an ideal waterproofing with high reliability.

Two-component compositions for roof insulation

As part of a two-component mixture, the main material is silicone rubber. It consists of an adhesive paste and a special hardener. Before direct use the product can be stored for a very long time, but after mixing, the two-component composition should be applied for a certain time - the mixture will begin to polymerize.

The main advantages of a two-component composition:

• ease of application;
• the range of possible temperatures for application is wide - from -25°С to +40°С;
• the temperature range at which the sealant is able to maintain its properties is even wider - from -70 ° C to +70 degrees;
• excellent adhesion to basic materials - metal, brick, PVC, wood, concrete;
• strong and smooth seam.

Using mastic to seal the roof

In addition to the above sealants, mastic can be used to treat the roof. Mastics are viscous plastic masses obtained by mixing binders with finely dispersed fillers (soot, talc, graphite, and others) and special additives.

By mixing the components (various resins and plasticizers, rubber), mastics of various characteristics are obtained.

For waterproofing, bituminous mastic is most often used, but its expensive polymer counterpart is also used (it is distinguished by increased elasticity and adhesion). It is chosen for the installation of roofing roll materials (soft roof). All types of mastics must be applied to surfaces thoroughly cleaned of dust and dirt.

Choosing the Right Sealant for Different Coatings

Varieties of sealants due to their distinctive features may be ideal for a certain type of roof and at the same time be completely unsuitable for another. To decide which roofing sealant better fit for the required coverage, consider the most popular of them.

How to protect a metal roof of different types from moisture

Sealant for metal roofing must meet a number of requirements:

• increased elasticity;
• precipitation resistance;
• strong adhesion to metal;
• enhanced vibration resistance.

The above criteria are best met polyurethane compounds bitumen-rubber sealants that retain plasticity throughout the entire period of operation. Before processing the seams of a metal roof, the surface must be degreased and dried. If urgent isolation is required, products with the ability to be applied to wet materials should be selected.

Attention! For a roof made of roofing iron, the use of silicone insulation is contraindicated - it causes rust.

In terms of its requirements and properties, corrugated board is in many ways reminiscent of metal tiles, so their sealing is carried out in a similar way. The maximum allowable roof pitch is 14 degrees. Special attention given to the processing of transverse joints profile sheets. Sealants based on polyurethane and silicone are best suited for such roofing due to their waterproofing properties.

For proper sealing of corrugated roofing, the following conditions must be met:

1. Before carrying out the procedure, carefully check the joints - they must be dry and clean.
2. Apply corrugated roof sealant in an even layer of 2-3 mm. It is convenient to use polyurethane tape.
3. Sealing should be carried out in dryness and at a positive air temperature.

When choosing a sealant for a metal tile roof, given the general similarity with a corrugated board coating, the following sealing features should be considered:

• for gaps up to five millimeters, silicone sealant is used;
• for the best result, it is necessary to use silicone with increased resistance to ultraviolet rays;
• the mixture is used to process all joints of the roofing carpet (longitudinal and transverse), ventilation outlet, antenna outlet, as well as the edges of the chimney apron and its joints with the coating sheets.

Materials for soft roofing

Soft roof ( flexible tile) has always been one of the most popular types of coverage. For global sealing, mastic is most often used. In other cases, you need to consider:

• for flat roof choose liquid rubber - bituminous emulsion or mastic;
• local repair of leaks involves the use of a one-component liquid rubber, a waterproof elastic composition is also suitable;
• for the elimination of seams and joints, sealing tapes for roofing are ideal;
• sealing mastic applies without problems even on wet surfaces, boasts excellent adhesion to most common materials and does not form blistering over time.

Manufacturers and average cost of roofing sealants

Prices for sealants may vary depending on their characteristics, manufacturers and region of sale. On average, you will have to pay for the package:

• bituminous sealant - from 90;
• polyurethane sealant - from 160;
• acrylic sealant - from 100;
• silicone sealant - from 85;
• tape sealant - from 140;
• two-component sealant - from 130 rubles.

Naturally, large packages and wholesale lots are always cheaper than small packages.

The most demanded products on the market under the brands:

When choosing a suitable roofing sealant, you need to carefully examine the packaging. It is important to pay attention to the setting speed, the possibility of curing in a humid environment, compatibility with the roofing material, weather resistance, the possibility of staining.

The ability to choose the right material for insulation and compliance with all technologies will ensure the required protection of the roof. To do most of the work with your own hands, minimal experience and knowledge is quite enough, but if in doubt, it is recommended to contact professionals who will tell you which sealant is best suited for your coating and carry out its waterproofing with high quality.

Roof sealant: overview of types and choice for sealing different roof materials

How to choose a sealant for roofing from metal tiles, corrugated board, iron, flexible materials. Types of products for reliable roof sealing and quick repairs

How our joy is overshadowed when on the weekend, having crossed the threshold of our beloved dacha, hoping to enjoy the cheerful crackling of firewood in the fireplace, warm and clean air, we suddenly hear the treacherous: drip, drip, drip ...
The roof is leaking, we are horrified, rushing for a basin.
We substitute it under the drops with anguish watching what happened. The rest is spoiled, bad weather insidiously made its way into our house.
But maybe it's time to look at the problem from the other side? After all, rain, in a sense, is an indicator that signals malfunctions of the roof, which is the time to patch it up before the winter cold hit. It is he who helps to diagnose the places of leaks.

Often, before appearing on the surface, water makes a long and winding path, overcoming the sometimes complex structure of the roof.

Those who have a "simpler" roof - slate or metal with a traditional gable profile, find a crack or hole easier than owners of multi-profile tiled roofs, but in any case, attention and patience will be needed.

The most vulnerable places junction of the roof to the chimneys, foundations television antennas, as well as joints with ledges of walls, windows.

The reason may also be suddenly cracked shingles or a hole in the slate, which appeared because the fixing nail has rusted or lifted.

When examine the roof from the attic, pay attention on any spots on the rafters and the crate - this is evidence that eloquently testifies to the place of the leak.

Remember visually or mark those places on the roof where, when the weather improves and repairs can be started, you can put your foot on without risking falling through.

After all, your own safety is no less important than the integrity of the roof.
Those who suffer from vertigo or are prone to dizziness are better off entrusting the work to professionals.

Never work on a wet or icy roof!

Put on your clothes, not constraining movements, and shoes with rubber soles.

Make sure the stairs was long enough and did not have to work on its highest step.

If on the roof ridge or rafters there are no special hooks for installing a ladder, fasten it with a special cable (a soft cable is suitable for towing a car).
Throw it over the ridge of the roof, fasten it to reliable beams and tie it with a sea knot.

In no case do not fasten the ladder and do not insure yourself by tying the cable around the chimney. It may not support the weight of your body if you fall.

Work with a partner, he will give the tools, and in which case he will insure.

If the damage is small(crack, slight displacement or hole), it is not difficult to seal them. Whatever your roof is - slate, metal, roofing felt or tiled.

Use for this, waterproof glue, resin, which are sold in specialized stores, or putty on drying oil, bought or prepared independently.

Due to the high material consumption, larger damages are usually repaired bituminous(price RUB 41.50/kg) or cement mastic (33 rubles / kg).

The last two materials, after drying, are primed and reinforced with paint on top.

For waterproofing and sealing roof joints bituminous mastic is the most popular remedy.
Alternative options are ready-made roof coverings containing bitumen, or more expensive, but also more reliable stainless metal strips - of stainless steel, aluminum, etc.

On sale there are also self-adhesive strips with aluminum foil, the reverse side of which has adhesive (adhesive) properties (roller 12.5 m long, 8 cm wide - 2557.50 rubles).
For a while, you can seal the joints with a simple putty.

at first thoroughly clean the area of ​​damage from dirt, rust or lichen (it can be destroyed by dousing with boiling water). Only when the area to be sealed is dry, apply the chosen material.

Damage that is more extensive in area is eliminated with the help of patches from various self-adhesive materials sold in stores, and home-made ones - from metal, roofing felt, tarpaulin or any dense waterproof fabric.

When repairing metal surfaces, patches from the same metal are applied and mastics containing bitumen are used.

To prevent corrosion, new insulation or nails used for fixing patches should be of the same metal as the old ones.

Close the edges carefully: for reliability and aesthetics, cover the patch with a waterproof coating on top. They are the most different colors- white, terracotta, green, gray, etc.

A "home-grown" patch of waterproof fabric is placed on putty on drying oil or paint, and after the latter has dried, it is dyed.

In any case, the patches should cover the area of ​​the repaired area from all sides by 6-10 cm.

When you replace broken roof tiles, or slate sheets, or rusted metal strip, trying to stick to two important principles.

The first- the replacement material must be an exact copy of the previous one in terms of size and quality.

Second- It is necessary to affect the neighboring elements of the coating as little as possible.

With deep holes in "puff" roofing roofs, the damaged layers are usually cut crosswise and the corners are turned away, after which they are cleaned, dried, primed, puttied (with bituminous mastic with the addition of sand, sawdust, etc.) and glued back.

They complete the work with one or more patches of roofing material, each of which should be approximately 10 cm larger than the previous one. They are tarred and sprinkled with sand or gravel, marble chips for strength.

By the way, getting started with ruberoid, the working side must be cleaned of the powder that covers the sheets so that they do not stick together during transportation.

Save on materials, you run the risk of discovering that a "cheap" roofing material is not worth much. After all, a solid crate is needed under it, and every year it needs to be treated with mastic.

And having spent on tile, you will get rid of the hassle for many years. And over time, it will be able to become your "road" not only in the financial sense.

Don't Forget to Take Care of Your Roof. In a word, make sure that the climate in the house is under your control.

In emergency work, not only skill is required, but also a good memory. After all what you do temporarily, then it is desirable to redo "forever"

Take your time, hearing the sound of drops on the floor, climb onto the roof. It is better to listen to the music of the rain for a while than to heal broken bones for a long, long time.

Don't neglect the technical innovations - stainless steel roofing nails, nail remover. The first will save you from problems in the future, the second will greatly facilitate the work.