Sika Lockstop Non-Swelling Waterstop 1" x 3/4" 100' Carton

Swellstop is a water-swellable, waterproofing sealant designed for use on many types of poured-in-place and below-grade precast concrete applications.
Swellstop stays flexible in cold weather without shrinking or hardening and does not require heating for application. In hot weather, Swellstop remains pliable and does not become spongy.
On exposure to water, it will begin to swell to seal any exposed gaps in concrete joints. Swellstop has excellent adhesion to clean, dry concrete. It is specifically intended for non-moving joints. It features an all-weather application and is engineered for use under most temperature conditions.

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