The sealant is a pasty mass that is used to glue parts, sealing, filling out emptiness, seal cracks, butts. For each of these works there is a separate type of sealant. And their characteristic depends on the destination. Choosing a sealant, prefer such well-known brands: Krass, Abro, moment, Soudal.
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To fill emptiness, cracks, cracks between brick, blocks, wooden bars apply assembled acrylic sealants. They do not contain solvents, quickly collapse with the surface, for a long time retain their elasticity. After 15-20 minutes after applying, the means forms a film and after 4-6 hours it can be placed, painted. Full drying occurs within 24 hours. Apply straight from a tube or with a gun. Apply for sealing joints in bathrooms, bathrooms, kitchens and window slots, door boxes. Advantages: Resistant to ultraviolet, when working is diluted, washed with water, after soaring the waters, forms a transparent seam. Disadvantage: It does not withstand strong mechanical loads, temperature drops, therefore used for internal work. Among acrylic sealants, Lacrysil, MasterCryl brand enjoy the greatest popularity.
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Silicone sealants are used as insulators of metal structures, door openings, window frames. They have high resistance to weather conditions, so used for internal and external work. They are distinguished by good adhesion to wood, enamel, glass, ceramics, metals. The neutral and acetic silicone sealant distinguish. Neutral recommended for working with glass, metal, acetic applied in the bathrooms, pools, bathroom. The main advantage is environmental friendliness, you can not use security tools. Catching occurs after half an hour, complete drying - after a day. Cover the paint silicone sealants is very difficult, so they are produced in different color shades. Silicone sealant Krass, in addition to the properties described, has fireproof, heat resistance, resistance to mold.
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Polyurethane sealants are used to glue any materials. Possess exceptional adhesion, corrosion racks, water exposure. Capable to preserve elasticity for a very long time. Advantages: Quickly collapse, form durable, sealed seams, easily painted. Disadvantage: It consists of caustic substances, so avoid entering open areas of the body, it is advisable to apply for external work. TECHNOPROK PU, ISOFLEX P40, Rustyl-1K did not well prove themselves.
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Tytan Euro-Line, Sailast) combine elasticity, durability and durability. Used when sealing seams of reinforced concrete, concrete structures, production of double-glazed windows. Dry over a few hours, hermetically covered all the slots, but give shrinkage.
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When choosing a sealant, learn the instructions. The greater the degree of adhesion, the stronger it is seized with the surface after the final drying. Other important characteristics: shrinkage (change in volume after drying) and relative extension at break.
In addition to the above sealants described, there are others, with a narrower specification. Butyl sealants are used for primary sealing of double-glazed windows, bituminous - to fill cracks in the roof, foundations, roofs, drainage systems.
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