This stuff is a great solution to providing an expandable seal under a sill plate. It goes on really easily and provides a nice foam barrier between the foundation and the sill. It pops really easily over the sill bolts too, so no worries there. Just stretch it out, pop it over the bolts and fold it at the corners, then lay your sills right on top. I've noticed ZERO daylight coming in under my sills with this stuff in there and I've had no need to provide any extra sealant (spray foam or otherwise) as a result.
Performs Well, Easy to Install, Easy to Work With, Seals Well, Economical
I recently purchased a portable air conditioner and there was a significant gap that released hot...
October 17, 2018
Verified Purchase & Recommended Product
I recently purchased a portable air conditioner and there was a significant gap that released hot air back into the room I was trying to cool. This product along with some pink insulation protected my window sill from the rain and heat exchange into my room. It was easy to install for my needs and can be easily removed if needed.