What are the benefits of using liquid sealants? Compare cork sealant and sealant for a wooden house Liquid sealant for filling joints

One of the modern building materials is liquid cork. It is a filler made of cork chips and an elastic binding component.

Application:

• Used for filling joints between parquet and walls, tiles, etc. The main advantage of liquid cork is its high resistance to various temperatures, high elastic properties and lack of shrinkage. Essentially it is a liquid cork sealant consisting of liquid cork crumbs.
• Liquid plug thanks to its remarkable properties can be used for noise and thermal insulation. So it can process the seams between window frames, doors and partitions.
• Cork consists of many air-filled cells, due to which it retains heat well and has good sound insulation. The surface on which the liquid stopper is applied must be dry, smooth and clean, so it is advisable to prepare it in advance.
• To reduce adhesion to the surface, you can pre-apply a primer. The liquid cork itself is applied using a gun or spatula, filling the seams evenly. If work takes place outdoors, then additional protection It is advisable to apply sealant to seams against negative climatic influences.
• Liquid cork is a great example where the environmental friendliness of a natural material and modern technologies. Thus, the advantages of natural cork are preserved and at the same time its disadvantages are eliminated - low elasticity, poor resistance to mechanical damage, low adhesion.

The main advantages of liquid plug:

• the seams are resistant to low temperatures and frost;
• the seam is quite elastic and does not lead to deformation of structures;
• good sound insulation;
• high mechanical strength and resistance to damage;
• good thermal insulation; – does not shrink.

If you need Additional Information regarding this material, you can always contact our consultants. They will tell you when the use of liquid stopper is most appropriate, what are the features of its use and will give recommendations on choosing the required brand of liquid stopper.

BOSTIK 3070 is a one-component cork filler made of cork chips and an elastic solvent-based binder, for noise and thermal insulation: seams between window frames and walls of buildings and structures, doors and partitions, as well as other cases of sound and thermal insulation.

The large number of air-filled cells in the cork chips create an insulating effect, minimizing the transfer of heat and cold and providing exceptional insulation.

Bostik 3070 provides an improvement in sound insulation of 27 dB (for comparison, the sound insulation of an empty joint is 19 dB).

Properties:

• Excellent sound insulation properties
• Universal
• Durable: mechanical impact does not cause cork particles to peel off
• High temperature resistance
• Frost-resistant
• Does not shrink
• Elastic seam

Specifications

• Physical:
• The base is cork granulate, bound with adhesive
• Appearance
• A mixture of cork and a cream-colored binder, after drying it looks like a cork
• Density 0.35 g/cm3
• Final hardening 6-12 hours, depending on air temperature
• Temperature resistance from approximately - 30°C to + 120°C
• Use temperature from + 5°C to + 35°C
• Consumption: 500 ml per 10 linear meters. m with a seam cross-section of 10 x 10 mm

Storage:

12 months in unopened original packaging; Store in a dry place at temperatures between + 5 °C and + 35 °C. Top

Preparing the basics:

Surfaces must be strong and smooth, dry, clean, dust-free and free of grease. The humidity of the base should not exceed 3%.

Application instructions:

To increase adhesion, the surfaces to be joined can be pre-primed. Apply Bostik 3070 using an air gun or trowel. Fill the seam evenly with material. When working outdoors, after complete curing, BOSTIK 3070 must be protected with an elastic sealant that protects against climatic conditions.

Indoors, seams also need to be sealed with elastic sealant. For this, the appropriate sealing materials BOSTIK 2637 and BOSTIK 2638 are used

And the most important thing iscomprehensive solutionproblems with Heat-Hydro and Sound Insulation. By using Cork Sealant you can easily replace traditional materials (jute, tow, sealants, polyurethane foam), which will save your time and money. When sealing seams, Cork Sealant is the only sealant that has the property of a Heat Insulator. At the same time, the cost of sealing with cork sealant is more economical than performing sealing work using the traditional method.

Cork sealant is a product consisting of 87% crushed cork oak bark, 5% elastic binder (acrylic) and 8% water. The only product plant origin with a porous structure (for 1 cubic cm there are more than 40 ml of cells filled with a mixture of nitrogen and oxygen), which has the unique properties of heat conservation, hyperallergenicity, moisture protection and environmental friendliness! When sealing between logs due to the acrylic binder, a protective film, which prevents the seam from external influences and any natural conditions!

Areas of use:

.Heat-noise-waterproofing interpanel seams in various types of structures;

Joints between the wall and the parquet;

Seams and gaps between logs;

Along the perimeter of door and window frames;

Filling joints in classic wooden house construction and construction from SIP panels;

Frost-resistant;

Does not shrink;

No odor

Elastic seam;

Improves sound insulation up to 28 dB (sound insulation of an empty seam 17-19 dB)

Durability (service life of a filled seam is at least 10 years)

How to work with cork sealant?

Working with CORKSRIBAS cork sealant is easy and simple; application does not require special skills or experience. The sealant has good adhesion with almost all bases and types of substrates used in construction (concrete, wood, DSP, OSB, ceramics, glass, metal, plastic). If the filled seam or base is dirty and has high porosity, then the surface to be treated must be cleaned and moistened with water, which prevents rapid drainage of water from the sealant body and has a beneficial effect on the uniform drying of the filled seam.

Step-by-step instruction:

Step 1: If necessary, prepare the seam or base for applying sealant - clean and remove dust.

Step 2: Prepare tool: gun closed type, spatula, trowel for compacting and smoothing the seam, damp sponge for removing excess sealant.

Step 3: Protect the adjacent surface with covering material, trim the edges of the seam masking tape, evenly fill the seam with sealant using a gun or putty knife, smooth the seam with a trowel using light pressure to seal the seam until flat surface(if necessary, the trowel can be moistened with water), remove excess cork sealant with a damp sponge before it dries (ATTENTION: after complete drying, the sealant can only be removed mechanically, which can lead to damage to the seam edges and adjacent bases).

Step 4: After completing work, wash the tool with warm water or soapy water. The material is not dangerous, non-toxic, non-flammable. When performing work, does not require the use of PPE. If work is carried out outdoors, after application, protect the seam from precipitation until it dries completely. Work is carried out in temperature range from +5 to +80°С.

The consumption of cork sealant depends on the joint being filled; on average, one briquette is designed for 5 linear meters with a joint cross-section of 10x10mm. Complete drying time depends on the thickness of the sealant layer, temperature and humidity environment, and on average is about 24 to 48 hours.

Technical data:

Color: white, milky, beige, yellow, gray, brown.

Packaging: Plastic bucket: 3.2 kg and 6.4 kg.

File package: 0.32 kg (500 ml).

Shelf life: Guarantee period storage - 12 months.

Base: Crushed cork oak bark.

Density: 0.35-0.40 g/cm3.

Relative elongation at the moment of rupture: not less than 33%.

Adhesion strength: steel/concrete/wood - 4/6/3 N/mm2.

Deformability: 8%.

Tensile strength: 7-8 N/mm2.

Application temperature range: from -10 C to + 40 C.

Vapor permeability: With a layer thickness of 5 mm - 0.2 m2h/mg.

Operating temperature: From -80 C to + 150 C.

Projected service life: 10 years.

Storage temperature: not lower than +1 C.

Relatively recently, the building materials market appeared the new kind plastic fillers - cork sealants, or liquid cork. It is to them that our today’s educational program is dedicated, which will introduce readers to the properties of this material, the features of choice, as well as the scope of application.

Composition and properties of sealant

The practical characteristics of cork sealants are determined by its main filler - cork chips, the share of which can be up to 90%. Another 5-7% of the volume is occupied by polymer binders, the rest is water, which is necessary to give the composition the desired consistency.

The qualities of the raw materials used as filler determine the behavior of the sealant during operation. Cork has elasticity and elasticity; these properties are retained after the composition hardens. Other most pronounced features are low thermal conductivity, small specific gravity, environmental friendliness and resistance to organic damage.

The behavior of the composition during application and its scope of application depend on the properties of the polymer binder. Most manufacturers use polyacrylate-based glue as a substance for gluing cork granulate. This is a water-soluble composition that does not contain or release volatile substances when hardened. Polyacrylates have excellent adhesion to most building materials, in addition to their physical properties have a great resemblance to cork chips. At the same time, the binder eliminates such disadvantages of cork as hygroscopicity and the ability to decompose under the influence of oxidizing agents and ultraviolet radiation.

Manufacturer's choice

On the market of Russia and the CIS countries, cork sealant, or liquid cork, is represented by several brands. ISOCORK and Bostik have the most expanded sales area, there are also less famous manufacturers. The cost ranges from 250-300 rubles per 500 ml when packaged in a plastic tube and can reach 500 rubles when supplied in syringe tubes. The choice of cork sealant on the market is significantly lower than that of conventional liquid cork. These compositions should not be confused: stabilizers and modifiers are added to cork plaster, which increase performance properties, but such substances reduce the environmental friendliness of the material.

It is worth noting that the production technology of cork sealant is simple and therefore there are no significant differences between the products of different brands does not have. The choice should be made based on the cost of the material and the volume of packaging, taking into account the recommendations of contractors and the developer of the construction project.

There is also one caveat. Polyacrylates and compositions based on them can lose their properties over time, therefore, the less time the sealant has been in storage, the better. It is worth asking the seller which manufacturer from his range he uses most in demand: this sealant is imported more often, which means there is less chance of purchasing an illiquid product.

Use in thermal protection systems

If cork agglomerate is used as insulation, several important requirements arise for installation process. Sealing seams - mandatory stage. In hidden insulation systems, it is necessary to eliminate blowing and cold bridges while ensuring maximum layer uniformity. If cork material used as finishing coat or under wallpapering, it is necessary to eliminate unevenness at the joints and hide them visually.

Cork sealant copes with all these tasks perfectly. It is quite sticky and when adhering to a cut cork board forms an almost monolithic structure. The plasticity of the composition allows you to fill the entire joint cavity and thoroughly smooth the surface. Most series of such sealants are produced with an expanded color card and can be easily tinted with dispersed tinting concentrates.

The installation process involves applying or injecting a small amount of sealant into the joint, pressing it in and smoothing it out using an elastic spatula. When working with roll materials It is convenient to use a sealant packaged in a polyethylene tube: from it the composition is squeezed out in small portions onto a palette, where it is given the desired color and shade, then the composition is pressed into the joint with light movements of a spatula. To seal seams in black agglomerate, it is convenient to use sealants in syringe tubes: a thin spout allows you to fill the seam from the very root, and with due diligence, without excess that needs to be removed or smoothed out.

Sealing of building structures

Prefabricated structures made of SIP or reinforced concrete panels have little stability and are prone to seasonal linear fluctuations. It is quite difficult to ensure the tightness of such buildings: most fillers in such conditions quickly lose their qualities. Thus, polyurethane foam, which is most often used for these purposes, becomes brittle over time and crumbles into gunpowder. Solid sealants, in turn, do not have sufficient elasticity and form cracks. The only one suitable material For such purposes, non-drying viscous mastics are used, but they do not quite fit into environmental construction standards, and they are expensive.

Cork sealant is well suited as a filler for joints, including locking joints. With its help, you can achieve very high-quality sealing of the edges of sandwich panels and eliminate cold bridges in the junctions with the frame. Residents of apartments in panel houses It can also be very useful during the next renovation to cut the joints between the panels and the ceiling and fill them with cork sealant, which will eliminate air noise, drafts and block the path of insects from neighboring apartments.

However, cork sealant is not very well suited for caulking a log house using the “warm seam” technology. With minimal risk, it can be used for established houses made of profiled timber with high-quality dowel fastening. However, in log cabins twists and linear movements are too great, while the cork sealant does not show sufficient elasticity and adhesion to wet wood.

Floor finishing

When laying linoleum, open joints are very popular: the absence of a threshold has a beneficial effect on both appearance and safety. To fill a seam oriented according to the pattern, it can be used cold method welding using cork sealant. This is especially beneficial for thick linoleum, where the cork filler can act as the basis of the joint for the use of a welding cord of smaller thickness. The most important requirement for this application - thorough cleaning joint with a vacuum cleaner and degreasing it with alcohol.

Using the same technology, you can perform a very high-tech seal at the junction of the tiles with laminate or linoleum. If the level of the finished floor is initially adjusted to a single surface, this method demonstrates high aesthetics and durability. The plasticity of the seam is high enough to compensate for both shrinkage and thermal deformation of the laminate, as well as fluctuations from passing loads. The best result is achieved provided that a groove is made in the adhesive joint under the edge of the tile, then the composition forms a reverse wedge that cannot be squeezed out.

When laying floor coverings Cork sealant is good for sealing seams between the floor and the wall. This sealing does not interfere with linear vibrations of the floor, while the path of small insects is blocked. The benefits of sealing a floor insulated with mineral wool are especially great: when the floor vibrates, no problems arise. air flow, removing small stone fibers from the cavity.

Sealing installation seams

The ability of phellem (cork) to prevent the propagation of mechanical vibrations is well known. This property is widely used in noise protection systems and here cork sealant once again finds application. Most famous example— arrangement of compensation gaps between partitions and capital structures. Filling them out liquid stopper almost completely eliminates airborne noise and well prevents the spread of structural noise.

In addition, due to the elastic properties of the cork filler, the impact on the partition from building structures. When installing frames under gypsum boards, the sealant is applied to the middle shelf of the guide profiles prepared for installation. This allows you to more accurately adjust the position when fastening and compensate for gaps with variable thickness. The joints of the abutments of partitions made of aerated concrete or gypsum blocks are filled after the masonry shrinks from a syringe tube, and the composition does not have to be applied to the full depth of the seam.

Application in sound insulation systems

The properties of cork granulate make it possible to use sealants based on it for joining and gluing sound-absorbing panels. The latter is also facilitated by the high adhesion of the acrylic binder to a wide range of materials.

The high density of cork sealant does not completely eliminate construction noise; however, it is not a bad idea to use cork when laying subfloor or ceiling boards. A small porous layer will prevent creaking between the floorboards and joists, and will also act as a shock noise damper.

Cork sealants are also used in automotive sound insulation. The purpose is the same: sealing joints and fixing the main blocks of sound-absorbing filler. The use of cork filler for vibration damping is widespread: in the supports of desktop machines, small vibrating tables, and when installing portable electric generators. Cork sealant can also be used to make molded parts, which expands the range of possibilities for the home DIYer.

WHAT IS CORK SEALANT?

It is a mixture of crushed cork oak bark and an elastic binder on water based. Oak bark is crushed into crumbs with a fraction of 0.5 to 1.0 mm, mixed with a binder and stabilizing additives, diluted with water to the required thickness and packaged into briquettes using special equipment!

Why is cork oak bark used, you ask? Everything is quite simple - this is the only product of plant origin with a porous structure (for 1 cubic cm there are more than 40 ml of cells filled with a mixture of nitrogen and oxygen), which has unique properties of heat conservation, hypoallergenicity, moisture protection and environmental friendliness! The mass fraction of the binder in the product is negligible and is about 5%, water as a diluent is 8%, and the rest is cork chips 87%, it is precisely due to its balanced composition that the ISOCORK cork sealant is recognized by experts construction market as an environmentally friendly product.

WHERE IS CORK SEALANT USED?

Every year we begin to value our comfort more and more. The house we live in must be built from environmentally friendly materials, the windows have no cracks, Wall panels were properly insulated, the seams in interior partitions were soundproof. We are trying to bring our home to modern requirements, create coziness, comfort in it, and most importantly, protect yourself from unnecessary expenses on heating. As you already know, seams are completely different and each has its own constructive solution, and for the seam to work correctly and not cause you discomfort, it must be arranged correctly. For this purpose, cork sealant “ISOCORK” was developed.

Cork sealant “ISOCORK” can solve a lot of problems and various tasks:

• Heat-noise-waterproofing of interpanel joints in various types of structures;
• Filling seams during the assembly and repair of panel houses made of reinforced concrete concrete;
• Filling joints in classic wooden house construction and construction from SIP panels;
• Construction of assembly joints when installing windows and doors;
• Filling gaps, making joints and transitions when laying laminate, parquet, and various floor and wall materials;
• Construction of expansion joints;
• Sound insulation of empty joints in interior partitions and interfloor structures;

ATTENTION: Cork sealant can improve the sound insulation of an empty joint by more than 27 dB.

Insulation and sealing of seams in a wooden house is the most critical stage in the construction or comprehensive care behind an already completed building.

The Russian Cork company has developed unique material, which has not only the advantage of acrylic sealants - elasticity, allowing the sealant to compress and decompress depending on ambient temperature and humidity, but also combining the property of a heat insulator, because it contains the most effective insulation- cork oak bark. Cork sealant ISOCORK consists of 87% cork oak bark, as a result of which it has a unique heat-saving property.

The main area of ​​application of ISOCORK cork sealant is sealing seams in timber and chopped wooden houses. The most important task of sealing wooden house is a reduction in heat loss. By filling cracks with ISOCORK cork sealant, you will receive thermal insulation, waterproofing, decorative appearance.

When using acrylic sealant for sealing, you need to take into account that its vapor permeability properties are very low. As a result, when sealing on one side, at the junction of the beam or log, condensation will form, and subsequently dampness, the growth of fungus and mold. To avoid this, sealing must be done from the internal and outside, which will double costs. When using ISOCORK cork sealant, it is enough to insulate the walls on only one side, since its vapor permeability is several times higher than that of conventional acrylic sealant.

ISOCORK cork sealant is available as standard in white and natural color traffic jams. When dry, it acquires the color of natural cork, namely light brown or Ivory (light beige). If desired, the sealant can can be made in any color, upon prior request.

DURABILITY AND UNIQUENESS

The durability and uniqueness of the cork sealant "ISOCORK" is achieved due to the fact that the cork chips are not subject to rotting, shrinkage and retain their original appearance throughout their entire service life - cork is truly an eternal material, and the elastic base complements the properties of cork and creates an insoluble film that can resist any whims of nature! Proper application and use of sealant will ensure reliable waterproofing, excellent noise reduction and heat saving on long years. The service life of the filled joint is at least 20 years.

Sealant production is carried out at modern equipment, and incoming quality control of raw materials allows us to maintain the brand and quality of products at the highest high level, which is confirmed by the quality certificate GOST R ISO 9001.