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.

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Unit Size

55 lb bag (W 221 025)






 

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