A multi purpose waterproofing product with excellent adhesion to dry and moist substrates. KOSTER 21 is a 2 component, solvent-free, liquid applied, elastic and crack bridging material. 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.
KOSTER 21 seals against synthetic oils and aliphatic hydrocarbons with high boiling points (up to 2 bar). KOSTER 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. KOSTER 21 does not contain volatile organic compounds (VOC content = 0), is free of polyurethanes, isocyanates, and bitumen.
Coverage: Approx. 0.4 - 0.6 lb/sq ft
- Angola, Cacuaco, new training facility of football club SLB Sport Luanda e Benfica
- Angola, Island of Luanda, Residential Building
- Angola, Luanda, 11 of November National Stadium
- Angola, Luanda, KERU supermarket
- Angola, Luanda, Maianga II Office building
- Angola, Luanda, Metal roofs of Toyota Truck Factory
- Angola, Luanda, Mix Office Building
- Angola, Luanda, Private House
- Angola, Luanda, SIE Headquarter Building
- Angola, Luanda, Sports Center
- Angola, Luanda, Swimming pool
- Angola, Luanda, Swimming pool restoration
- Angola, Luanda, terraces of Hotel Azuli
- Angola, Luanda, water tank truck
- Angola, Mussulo Island, Beach Resort
- Angola, Samba, Luanda, Catering factory
- Croatia, Biograd, Primary School
- Croatia, Island of Pag, Church, roof waterproofing
- Croatia, Novalja, Tourist Community of Novalja (Turistička Zajednica Novalja)
- Croatia, Osijek, Multi-family-house
- Croatia, Zagreb, Water well ''Sašnjak''
- Lebanon, Beirut, AlTawfic Project
- Lebanon, Beirut, Badaro 4741 Project
- Lebanon, Beirut, Casa Verde Suites and Homes
- Lebanon, Beirut, Dunes Mall & Hotel Radisson Blu
- Lebanon, Beirut, Malas Project
- Lebanon, Beirut, Manara 1033 Project
- Lebanon, Beirut, Manara 3016 Project
- Lebanon, Beirut, Rana Building
- Lebanon, Chhim, Queidat Project
- Lebanon, North Lebanon, Chekka Chemical Factory
- Lebanon, Verdun Tower
- Malaysia, Project at Kajang Residence
- Malaysia, Project at West Port Klang
- Montenegro, Krasici, Residential house
- Panama, Panama Ports Company
- Singapore, 20 Woodlands Walk
- Singapore, Factory at Woodland Area
- Singapore, Roof Waterproofing in 8B Lowland Road
- Singapore, Tiled Roof Waterproofing in 1D Chancery Lane
- Singapore, Wet Room Waterproofing in Grange Residence, Tanglin Road
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Technical Data Sheet