Another one skinned

[apratt]

Cracker why not just drill a small hole and use the spray foam, then plug the hole.

[cracker39]

Cracker why not just drill a small hole and use the spray foam, then plug the hole.

Have you ever used it? You cannot control the amount of expansion of the regular spray foam. The expansion would make my 1/8" paneling bulge out and probably tear loose from the adhesive on the frames. I put spray foam under the bottom of some sash type windows that I once installed in my house. I failed to close and lock the windows first. The foam actually made the bottoms of the frames bow upward so that I couldn't close and lock the windows after the foam expanded. I had to cut the foam out, close and lock the windows, and do it all over again.

There is a low expansion foam, but I'd have to drill quite a lot of holes to get it to fill all of the area. It's just not practical to do either.