W 221 025 - KOSTER NB 1 Grey

Watertight (> 400 ft water head) cementitious waterproofing with subsequently crystallizing agents. Suitable for positive side and negative side waterproofing. A waterproofing made of KOSTER NB 1 Grey possesses excellent pressure and abrasion resistance.  For area waterproofing in new construction and restoration, e.g. waterproofing of basements and tanks.

KOSTER NB 1 Grey is Certified to NSF/ANSI 61

Watch the KOSTER NB 1 Grey application video!

Coverage: One 55 lb bag will cover approx. 110 sq ft. A minimum of 0.5 lb/sq ft is required for most applications. If brush applied at 0.5 lb/sq ft, apply 2 coats at 0.25 lb/sq ft each.

Related products

Unit Size

55 lb bag (W 221 025)




Albania Austria Bosnia and Herzegovina Brasil Bulgaria China Croatia Czech Republic Denmark Finland Germany Ghana Greece Hungary Iraq Italy Japan Kazakhstan Kuwait Latvia Lebanon Macedonia Mexico Netherlands New Zealand Norway Panama Poland Portugal Romania Russia Senegal Serbia Slovakia Slovenia South Africa Spain Thailand Turkey Ukraine United Kingdom United States of America