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The Owens Corning FS5550BK is a polyethylene foam sill sealer supplied as a roll 5.5 in. wide by 50 ft. long with a nominal thickness of 3/16 in. It serves as a compressible gasket to fill the gap between the sill plate and foundation, reducing drafts and air leakage, resisting moisture transfer into the wooden structure, and acting as a barrier to insects for new and retrofit construction. It installs without special tools.
Polyethylene foam sill gasket, 5.5 in x 50 ft, 3/16 in thickness; seals foundation sill gaps
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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