Bitumen sealant made from modified bitumen for roofing. How to choose bitumen sealant. Metal roof sealing technique
Every building has a countless number of joints, especially in the roof area. It often turns out that a leak occurs in such places; water leaks from the street into the room. If this defect is not corrected in time, the roof may collapse completely. For such cases, all kinds of sealants are used, materials created on the basis of polymer products that serve to eliminate cracks and cracks in different places structures. In addition, they are used for sealing or joining seams.
It is very popular, which is used for repairs and roof installations. Therefore, it is often called roofing sealant. In professional construction, this product is also called thiokol or polysulfide.
The main area of application of bitumen sealant
Bitumen sealant is used for the following purposes:
Sealing seams and joints during installation ventilation systems and air conditioners;
Installation and repair of roofing;
Sealing joints during soundproofing and thermal insulation works indoors;
Bitumen sealant is used to seal joints roofing materials
Sealing of attic window structures;
Connecting all kinds of polymer and bitumen coatings both with each other and with other working surfaces: metal, wood, concrete, etc.;
Characteristics of bitumen sealant
Bitumen sealant is a very durable material. It is insoluble in water and does not lose beneficial properties when exposed to temperatures, resistant to various atmospheric phenomena. The polymers that make up its composition on a bitumen basis enable excellent adhesion (adhesion) to different types building materials, protecting against rust on load-bearing metal structures roofs
Bitumen sealant is easy to use and maintain. It dries very quickly (in 2 hours, in some cases up to 48 hours). In addition to roof repairs, such sealants are indispensable for strengthening the foundation, preventing water from entering the premises. They are viscous and do not emit toxic gases.
Instructions for using bitumen sealant
Like all building materials, bitumen sealant requires compliance with certain rules during its operation:
The working surface must be thoroughly cleaned of dirt, dust particles and grease;
If you apply the sealant in several layers, you can achieve a better effect;
Used only at positive temperatures;
The sealant layer should not be more than one millimeter;
How to choose bitumen sealant
Bitumen sealant
The main area of application of bitumen sealant || Characteristics of bitumen sealant || Instructions for using bitumen sealant
One of the most significant components of the entire housing system is the roof. After all, the practicality and comfort of residents depends on the quality of the roof. For this reason, only strong and reliable materials are used in roofing work, and all roofing conditions and requirements must comply with standards.
Restoring a roof does not always mean changing the material used; quite often it is necessary to efficiently and effectively close the cracks and cracks that cause dampness in the house. For this purpose they use bitumen sealants. Bitumen does not dissolve in water, and it is also very durable various types negative conditions, which is why it is most often used on damp surfaces.
Work period bitumen sealant from fifteen to twenty years. The main characteristics of the material include: good connection With different surfaces and materials, moisture resistance, flexibility, surface protection from corrosion.
Before applying sealant to the surface, it must be thoroughly cleaned and degreased. In this case, a solvent must be used.
Bitumen sealant It is recommended to apply it to cracks and cracks only at temperatures above zero. It is advisable to do this at a temperature of +5-+30 degrees. To ensure faster drying and quality result It is recommended to lay the sealant in several balls.
Sealants can also be used for insulation works, and before applying it, the surface must be thoroughly cleaned and degreased.
How to choose bitumen sealant
Bitumen is the main component bitumen sealant, and is considered the highest quality material used for sealing.
Bitumen has an aluminum tint because it contains aluminum pigment.
Bitumen sealant characterized by the fact that it sets very quickly and can be used with almost all materials. It also protects iron structures from corrosion and rust. This material forms a strong, elastic plane and is not subject to infrared and sun rays, as well as humidity.
Feature bitumen sealant is that it must be used immediately, and the surface should not be dried or prepared.
The main purpose of the sealant is to cover the roof, but it can be used for other purposes. For example, bitumen sealant is well suited for sealing cracks in stone, roofing concrete products, gluing waterproofing sheets, and eliminating leaks in sewer pipes.
Depending on the application, there are several types of bitumen sealant: acrylic and polyurethane.
- Acrylics are used for smoothing cracks, filling joints, smoothing seams in walls, floors and windows.
- Polyurethane sealant can work in fairly low temperatures; it can be used to seal seams, insulate swimming pools, cold gardens, and double-glazed windows. Most the best option- is to use polyurethane sealant at roofing work: for sealing joints of roofing materials, eliminating leaks, installing waterproofing.
Different types of sealant have their own characteristics. If you use silicone sealants, you should know that they are resistant to snow and rain, the appearance of fungus and mold, and have big choice color range, but they cannot be used on wet surfaces and are not compatible with dyes.
Bitumen sealants are used with any materials and are very resistant to cold temperature, are used on wet and dry surfaces. Plus, they are affordable.
For roof repairs there are different ways. Often this does not require replacing the installed roof deck. Most often, the cause of roof defects is gaps and cracks formed during operation that allow water to pass through. To eliminate them, special sealing compounds are used.
The roofing sealing compound is made on the basis of bitumen, which, as is known, does not dissolve in water and is distinguished by its water-repellent qualities. That is why bitumen roofing sealant is one of the most popular. As a rule, it comes in black, but it is possible to add a pigment to it, for example, aluminum, which also contributes to the durability of the resulting layer.
What is bitumen roofing sealant?
This sealing paste is based on a bitumen binder, which has been modified by adding a filler neutral to external loads, using modern technologies. Bitumen roofing sealant differs:
- excellent guaranteed adhesion to all kinds of roofing materials and types of surfaces;
- relatively high speed grasping;
- resistance to ultraviolet radiation, thixotropy prevents the formation of cracks during drying;
- biological stability – even in conditions high humidity bitumen paste does not undergo organogenic destruction, fungal mold or microorganisms do not form;
- the layer formed after sealing cracks and gaps is durable, but at the same time quite elastic, has a long service life of about 15–20 years;
- prevents corrosion metal structures and fasteners;
- does not need to dry the surface before treatment;
- has chemically neutral subtypes that are resistant to oils, gasoline, solvents and other things.
However, materials of this type are poorly adapted to high temperatures.
The compound can also be used in works such as compaction, sealing, filling cracks in the foundation, plinth, drainage system and others.
Types of roofing sealant
Bitumen rubber
Bitumen-rubber sealant, Titanium, for example, can also be used to seal joint joints on the roof covering. In contrast, roof ridges and elements of drainage systems and other junction points. Based on rubber, it has elasticity, is not susceptible to mold, and has the same good degree adhesion to dry and wet surfaces.
This type of compound consists of bitumen, resin, artificial fibers and rubber and solvent of organic origin. The material is used in the temperature range from minus 20°C to plus 70°C. According to the method of hardening, like all bitumen, it belongs to the category of physical drying, that is, it hardens when the solvent evaporates. Depending on the thickness of the applied seam, this process is finally completed within 12–114 days with a dry residue of 85-87%.
One of the most famous is Titan, which is based on bitumen and rubber. What makes him different is high degree reliability, thanks to increased adhesion to surfaces made of aluminum, metal tiles, roofing iron with a wet or dried surface. It is quite viscous and does not flow, has high performance weather resistance. Main scope of use:
Bitumen-polymer
These are one-component materials from petroleum bitumen, which, due to the addition of polymers and mineral components, acquired new qualities. TechnoNIKOL bitumen-polymer sealant, for example, is used to repair roofs covered with sheet or roll material. They glue loose edges, seal cavities and joints, and thereby quickly eliminate leaks that appear as a result mechanical damage roofing covering.
bitumen polymer sealant TechnoNIKOL: main technical characteristics
Unlike bitumen, the rate of hardening for them depends on the level of atmospheric humidity. The TechnoNIKOL material, which contains polymers, differs in the method of application - it is applied hot, as it softens at 160°C. This is a complete guarantee of the durability of the sealing carried out even in conditions of constant humidity. Such treatment also prevents the occurrence of fungi, etc.
One of the most important measures during any construction is reliable sealing of the roof. Much depends, of course, on the quality of the roofing and the method of its installation.
But this alone is not enough - all even slightly vulnerable areas must be carefully isolated from moisture.
For this, there are special hermetic compounds for. Proper selection of the right product will ensure proper treatment of any type of roof. After its use, the roof will not allow moisture to pass through, will be more durable and repairable.
Exist Various types sealing agents. They are used in the process of repair and planning work, as well as during construction.
These can be completely different construction and finishing activities:
- sealing the seams between separate elements, for example, roofing sheets, especially for roofs that have a slight slope;
- eliminating cracks 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 inclined skates;
- quick removal of leaks.
All existing sealants are conventionally divided into six main types. Let's look at 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.
Advantages of this material a lot:
- excellent moisture resistance;
- good elasticity;
- affordable price;
- Possibility of painting to match 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 working with metal roofing (etc.), roofing felt, etc.
Their disadvantages are poor resistance to high temperatures and fairly high toxicity.
3. Silicone
These are various viscous plastic pastes, for the production of 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 that has the required characteristics. For waterproofing, bitumen mastic is mainly used, and its more expensive analogue is polymer.
The latter has higher adhesive properties and, in addition, it is more elastic. It is more preferable for installing soft ( roll materials). Before applying any mastic working surface must be well cleaned from dirt and dust.
Selecting a sealant
How do you know which specific sealant is suitable for each individual case?
Different types of sealants differ markedly in their performance qualities. Some types may be ideal for a certain type of coating, but be practically unsuitable for a completely different one.
Let's consider the most popular of them, suitable for different types roofs.
Sealants for metal roofing
For roofing coverings This type requires tools with the following qualities:
- reliable adhesion to metal;
- high elasticity;
- good vibration resistance;
- resistance to precipitation.
These characteristics are most closely matched by bitumen-rubber sealants and polyurethane sealants, which are capable of maintaining high ductility throughout the entire operational period. Before starting processing work metal coating Places where the substance is applied must be well degreased and dried. In the case where the roof needs urgent insulation, the best solution is a composition that can be applied to a damp surface.
It is important to know that the use of silicone insulation on iron roof can be immediate cause the appearance of rust.
In terms of its qualities, corrugated sheeting is very similar to metal tiles. Therefore, they are sealed in a similar way. The most permissible roof slope should be 14 degrees. The transverse joints of profile sheets need to be given special attention. For such a roof, sealants based on silicone and polyurethane are most suitable for their performance characteristics.
Sealing corrugated roofing
To carry out proper sealing of a roof made of corrugated sheets, it is important to do the following.
- Before starting the procedure, check the joints - you can only work with dry and clean surfaces.
- Apply sealant to the corrugated sheet covering in a uniform layer about 3 mm thick. You can use polyurethane tape.
- All activities are carried out at positive temperatures and in relative dry air.
Sealing metal roofing
When selecting a sealant for, with all its similarities with corrugated sheeting, it is important to consider the following:
- the best final result is obtained when using silicone, which has increased resistance to ultraviolet radiation;
- silicone sealant is suitable for cracks no larger than 5 mm;
- do not forget to treat the ventilation outlets, the edges of the pipe apron, the antenna outlet, and the longitudinal and transverse joints of the roofing carpet with the mixture.
Sealant for soft roofs
Or, in other words, soft tiles, has always been considered a very popular and popular coating. For its large-scale sealing, one type 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 repairs of individual defects and leaks, it is good to use an elastic waterproof compound;
- the mastic is well applied to any surface, even wet, has excellent adhesion with many of the most different materials, does not form swellings.
When choosing the roofing sealant you need, read all labels on the package.
It indicates the possibility of hardening during humid environment, setting speed, compatibility with other materials, possibility of subsequent painting, resistance to atmospheric precipitation.
All of 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 not only be able to give advice on which product is suitable in a particular case, but if necessary, they themselves will carry out reliable and high-quality waterproofing.
The main component for bitumen sealant is bitumen. Bitumen sealants are among the most quality materials, used for sealing. They are especially popular for roof insulation. The article is devoted to the question of how to choose the right bitumen sealant.
The basis of this sealant is modified bitumen. It has an aluminum tint due to the presence of aluminum pigment in the composition.
Properties of bitumen sealant
It is available in the form of a paste and has a number of positive qualities:
- sets quickly;
- adheres to almost all materials;
- forms a durable, elastic surface;
- protects metal structures from corrosion;
- does not collapse under the influence of sunlight and high humidity;
- used immediately. No preparation or drying of the surface is required.
Negative points
It has bitumen sealant and some restrictions in use:
- does not tolerate very high temperatures;
- absorbs into porous materials, so a preliminary primer is needed;
- takes a long time to dry if applied thick layer. The consumption of bitumen sealant also depends on the thickness of the layer;
- does not adhere well to oily surfaces. It is necessary to apply primer before sealing;
- does not hold varnishes and paints on its surface;
- is toxic, so bitumen sealant is used for exterior use.
Usage
When repairing a roof, bitumen sealant is indispensable when:
- Seal joints between sheets of roofing material.
- Waterproofing is carried out after installing pipes, valleys, various strips on the roof, at the junction of the roof and the wall.
- Eliminate leaks.
- They seal the roof in those places where fasteners for snow retention devices, stairs, railings, etc. pass through it.
Although bitumen sealant is intended for metal roofing, use it for other purposes:
- seal cracks in the stone before covering it with roll waterproofing;
- glue sheets of waterproofing to them;
- cover concrete products before placing them in the ground;
- eliminate leaks in sewer pipes where liquid moves by gravity.
Brief overview of popular bitumen sealants
It is not difficult to buy bitumen sealants, but it is better to choose a quality one that has good characteristics and produced by a reliable manufacturer.
Professionals often use black bitumen sealant PENOSIL Bitum Sealant, which is produced in Estonia. It is used when it is necessary to perform the following work:
- fill seams and cracks in low-traffic areas;
- eliminate leaks on a flat roof;
- seal seams in metal roofing;
- make the joints between plates or strips of bitumen more dense.
Characteristics:
- adheres well to metal, ceramics, concrete, bitumen;
- melts at 100 C;
- The cartridge with sealant is equipped with a gun.
Bitumen sealant “Moment” is produced in Germany and is no less popular. They repair:
- roofs;
- drainpipes;
- ventilation systems.
It has high moisture, wear and heat resistance.
The Belgian one-component roofing sealant SOUDAL also earned good reviews. Works great:
- with cracks and cracks in the roof;
- with cold gluing of roofing material;
- with repair of gutters and drainage pipes;
- with filling of low-moving seams.
Bitumen-polymer sealant
Bitumen-polymer sealant is used when:
- Sealed expansion joints on asphalt concrete and concrete covering highway or runway.
- Seal cracks in concrete or asphalt coatings.
Compound
This hot sealant contains:
- petroleum bitumen;
- modified synthetic rubber;
- technological additives.
Properties
The use of bitumen-polymer sealant in the most critical places is due to its properties, namely:
- Wide range of temperatures at which it can be used. Store at temperatures from -20 to +30 C. Working temperature from 160 to 190 C. Softens at temperatures from 95 to 105 C.
- High elasticity. Under the influence of ultraviolet rays, its properties change by only 15% within 1000 hours.
- No shrinkage.
- BP-G25;
- BP-G35;
- BP-G50.
Worthy of attention is the bitumen-polymer sealant "Prestige", which produces Russian company"Polymer Progress". This material:
- one-component - black mass;
- wear-resistant. Withstands both significant temperature fluctuations and aggressive environments;
- adheres well to metal, stone, concrete.
Includes:
- polymers;
- petroleum road bitumens;
- plasticizers;
- adhesive additives.
It is used in the repair of roads and airfields.
The universal hot-use bitumen-polymer sealant TechnoNIKOL No. 42 from the domestic manufacturer TECHNONICOL is also widely known:
- all characteristics appear 1 hour after application;
- used when different temperatures, which is a big advantage.
In the examples given, we were talking about hot-applied bitumen-polymer sealants, but there is another type - cold-applied. These include sealant-mastic BIOM-I. The material is produced by the company "ANTIGYDRON". Applicable for:
- sealing seams, both horizontal and vertical;
- sealing small cracks;
- installation of an independent waterproofing coating;
- laying roofing felt.
It is a sticky paste, very viscous, reinforced with polymer fiber.
Bitumen-rubber sealant
The main difference between bitumen-rubber sealant and simply bitumen is that:
- Its basis is bitumen and rubber.
- Its vibration-damping properties are maintained even at very low temperatures - maximum -60 C.
- It's more economical.
- It does not require constant heating. Consequently, energy is saved and there is no need for special equipment.
- The price for rubber-bitumen sealant is much lower than, for example, for bitumen-polymer sealant.
The best bitumen rubber sealants
A good option is the bitumen-rubber sealant “Tytan” from the company TYTAN. Has a number of advantages:
- good adhesion to dry and wet materials;
- resistance to various atmospheric influences;
- ability to hold on vertical surfaces, thanks to high viscosity;
- plasticity is constant;
- absence of asbestos.
They repair roofs:
- metal;
- bitumen;
- tiled;
- wooden.
Sealed:
- cracks;
- leaks.
Compact:
- gutters;
- attic windows.
The bitumen-rubber sealant BITUM 300 is of high quality, and has proven itself in roof repairs and sealing because:
- maintains its characteristics in the range -35+110 C;
- applied at a temperature not lower than +5 and not higher than +30 C;
- dries in 20 minutes;
- consumption is 25 ml/per linear m. with seam parameters of 0.5x0.5 cm;
- stored for 1 year.
Now let’s summarize how to choose a bitumen sealant. Simple tips:
- first, assess the surface to be sealed;
- secondly, read the instructions on the package;
- thirdly, decide on the quantity;
- fourthly, ask the seller for a certificate for the selected material;
- fifthly, when working with sealant, follow the instructions.
This video talks about working with bitumen sealant 808 Kim Tec from the manufacturer KIM TEC. The recommendations given by the author apply equally to all bitumen roofing sealants:
The roof is one of the most important elements design of the entire house, since the service life of the roof, convenience and comfort of the residents will depend on the quality of its implementation. Therefore, in roofing work, only the most durable building materials are used and all requirements are met.
Repairing a roof does not always involve replacing the material from which it is made. Quite often it is necessary to efficiently and effectively seal cracks and crevices that allow moisture to enter the house. For this, as a rule, they use bitumen sealants. The main component of this material is bitumen, which is insoluble in water and exhibits high level resistance to a variety of external negative factors. For this reason, bitumen sealants are most often used on wet surfaces.
Life time seam bitumen sealant averages from 15 to 20 years. Among the main advantages of this material are such as excellent adhesion (adhesion) to a wide variety of surfaces and building materials, elasticity, high level of resistance to moisture, weather conditions, effective protection surfaces from rust, which can quickly destroy the roof.
The use of bitumen (roofing) sealants is relevant not only for roofing. The material is well suited for compaction, sealing, filling cracks in foundations, plinths, drainage system and other designs. But in order to bitumen sealant really showed his all positive properties and provided great result, you need to remember some operating rules.
Before applying the sealant, the surface must be thoroughly cleaned and degreased using a solvent. It is advisable to apply sealant to cracks and crevices only at positive temperatures, in the range from +5 to +30 degrees Celsius. The sealant is usually placed in several thin layers, which ensures faster and better drying.
In order for the bium sealant to lay securely and firmly on the base of the roof, its layer should be a maximum of 0.5 to 1 millimeter. At the same time, the average consumption of mastic per square meter on average should be from 0.8 to 1.8 kilograms. Setting time of bitumen sealant is less than half an hour, for complete drying, as a rule, it takes from 2 to 4 hours. Although, there are materials that dry completely only after at least two weeks. If bitumen sealant is used on a porous base (cement, cement-sand), then the roof surface must be primed using a bitumen primer, then wait for it to dry completely and only then begin the main sealing work.
Thanks to the use bitumen mastic It is possible to obtain a reliable monolithic roof, eliminating even the minimal risk of leakage. This makes it possible to significantly increase the physical and mechanical properties of the roof, the duration of operation without the need for major renovation, reliability and other important properties.
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