Bitumen free, polymer modified, mineral hybrid coating for the internal and external waterproofing of building structures.
Koster NB 4000 cures reliably and quickly also in difficult ambient conditions. The material can be applied from + 2° C upwards, is resistant to rain after approx. 2 hours and can be exposed to pressurized water after 24 hours of curing time. Koster NB 4000 is elastic, crack bridging and suitable for slightly moist and bituminous substrates. Fields of application: basements, foundation plates, masonry and the repair of mineral waterproofing layers.
Koster NB 4000 is applied in 2 coats by trowel. The second coat is to be applied as soon as can be done so without damaging the first coat. Areas prone to or in danger of cracking should have Koster Flex Fabric embedded in the fresh first layer.