KOSTER BS 1 Bitumen Paste is a solvent based, non-sagging weather resistant and flexible bitumen paste.  The softening point is at 212ºF (100ºC) which ensures the stability of the material.  The BS 1 Bitumen Paste is resistant to diluted acids, alkalis, industrial gases, salt-water, and similar aggressive substances.  KOSTER BS 1 Bitumen Paste is asbestos-free and contains no PCBs.

KOSTER KBE Liquid Film is a highly elastic, solvent-free, rubber/bitumen based compound.  The material is weather and UV-resistant. KOSTER KBE Liquid Film is used for foundation and intermediate waterproofing on horizontal areas of terraces, balconies, wet and/or damp rooms (under screeds) as well as for sealing seams and edges of waterproofing membranes in above and below ground construction, e.g. underground garages.

KOSTER KBE RS is a highly elastic, solvent-free, spray-applied, bitumen-based waterproofing compound.  The material is weather resistant and UV-Stable.  It reacts very fast and is immediately resistant to rain after installation.  It may be exposed to water-head 24 hours after the application.

KSK ECO 10

KOSTER KSK ECO 10 is cold-applied self-adhesive membrane and can therefore be applied without using hot air or propane gas welding. Due to its high ductility and flexibility, it can also be easily applied to intricate details. The top side of the membrane is laminated with a highly tear resistant synthetic sheeting.. Seams are connected simply by pressing the overlapping area together with a roller. KOSTER KSK ECO 10 is suitable for positive side waterproofing of basements, tunnels and tanks, for waterproofing foundations and for intermediate waterproofing of horizontal areas of terraces and balconies.

KB Flex 200

KOSTER KB-Flex® 200 is a permanently elastic waterproofing compound for sealing tubular pipe penetrations, cavities, etc., against moisture or pressurized water.  It remains permanently pliable and adheres very well to dry or slightly moist substrates.