ok, so now that the foam is gone where can i get more foam to inject in there? Would a carpet type foam from lowe's or something do the trick or do i need something else. if i go with fiberglass matting we are talking about a whole lot of it b/c the spot is about 3 feet long, plus would have to fill in a quarter inch hole. should i maybe look for some type of plumbing foam or something that would fill in the area w/o me having to cut the top layer of glass off?