White, 2 component, solvent free, multiple use crack bridging waterproofing, resistant to pressurized water, oil resistant

W 210 020

DESCRIPTION

KÖSTER 21 is a 2 component, solvent-free, liquid applied, elastic, crack bridging waterproofing material with excellent adhesion to dry and moist substrates. It is liquid applied and therefore seamless, which greatly eases application to complicated architectural details. Due to its UV stability it is suitable for indoor and outdoor use.

The white color reflects sunlight and reduces building surface temperatures. The fast curing coating is highly flexible, resistant to occasional foot traffic, aging, hydrolysis, UV-rays, frost, and salt. 

KÖSTER 21 seals against synthetic oils and aliphatic hydrocarbons with high boiling points (up to 2 bar). KÖSTER 21 is not resistant against substances with high aromatic hydrocarbon contents such as benzene, xylene, toluene, etc. In case of questions contact our technical support team.

KÖSTER 21 does not contain volatile organic compounds (VOC content = 0), is free of polyurethanes, isocyanates, and bitumen.

AREAS OF APPLICATION

KÖSTER 21 is a waterproofing material for the positive side waterproofing of basements, concrete slabs, in tanks, on flat roofs, underneath tiles, on terraces or balconies, and similar applications. KÖSTER 21 is also suitable as a protective coating against mineral oils and aliphatic hydrocarbons. KÖSTER 21 is suitable for the protection of surfaces in facilities with chemical and mechanical demands on the coatings, such as containment and skimming tanks. KÖSTER 21 bonds well to a wide variety of substrates, including: masonry, concrete, screed, plastics, metal, and aggregate covered bitumen membranes.

PROPERTIES

• Elastic and crack-bridging. 
• For indoor and outdoor application: resistant to UV-radiation, salt, hydrolysis, and freeze / thaw effects. 
• Good adhesion to slightly moist mineral substrates. 
• Good adhesion to a wide variety of materials.
• Easy to apply.
• Resistant to pressurized water.
• Hydrophobic (water repelling effect).
• Free of solvents and volatile organic compounds (VOC).
• Does not contain isocyanates or bitumen.
• 2-component, fast-curing.
• White color, reflects thermal radiation (saves energy).
• Versatile application per brush, trowel, roller, or spraying.
• Viscosity and workability can be adjusted with water according to jobsite requirements.

CONSUMPTION

approx. 2.2 - 2.6 kg/m² Do not exceed layer consumption by more than 100%

PACKAGING

20 kg Combipackage; 1 x 8 kg Powder; 2 x 6 kg Liquid

Please note: KÖSTER Bauchemie AG products are available for sale only on the Estonian market.