2 METRE STRIP OF BLACK BACKING FOAM (VARIED DIMENSIONS)
Black polyethylene foam in a handy 2 metre strip to back out deep joints in preparation for mastic sealant application. This expansion backing foam caulking provides a sound base to gun mastic against.
Please note: Although black is specified, the actual correct colour is a very dark anthracite grey.
• Can be easily cut to required joint size and shape with a blade
• Expands to meet the joint substrates ensuring a tight joint seal
• Very easy to apply, just push into place with a stick etc.
• Closed cell and non-absorbent
• Reduces the quantity of mastic sealant required