Closed cell industrial foam made from a blend of vinyl Nitrile & Neoprene with high-tack acrylic adhesive.
Expansion foam creates a gap in new concrete preventing the concrete from sticking to an existing structure , allowing it to expand and contract freely
it has a 10mm zip strip that can easily be torn off to create a void for sealant . if you dont want a void for sealant , simply apply the roll upside down .
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