Forum Discussion
Anonymous
Apr 21, 2017Why not use expanding foam? That's how trailers come from the factory. Just run a line down the edges and join the underbelly with the bottom of the trailer. The foam will expand to give you a seal, fill any irregularities, and it's waterproof. It would be much cheaper than tubes of caulking.
About Travel Trailer Group
44,030 PostsLatest Activity: May 02, 2025