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Green Roofs with KÖSTER TPO Roofing Membranes Green roofs not only add visual appeal to an often dreary roof design but also provide many tangible benefits for buildings and the environment.
During the Dach + Holz Exhibition in Stuttgart, the KÖSTER BAUCHEMIE AG was recognized by the IBU as a sustainable partner in construction for its roofing membranes.... more
The excellent long term durability of KÖSTER TPO Membranes could be proven through a performance test after 14 years of weather exposure.... more
A multi purpose waterproofing product with excellent adhesion to dry and moist substrates. KÖSTER 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.
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.