I bought this to sheet my king kobra wings. Label says it foams and it is polyurethane. Half the price of gorilla and very runny too. Like syrup. Should be able to use a roller to apply it! Gorilla is seriously thick.

Label says it uses the very same procedure as gorilla, wipe with damp rage to start the cure. Says it expands as it cures... Elmer's also has one called Nano and is also a foaming glue. I hear the Nano starts to cure fast so if u get that u better work fast.