Insulating the Belly of my TT
I’m interested in bolstering the insulation of my travel trailer… preparing it for 4 season camping. The walls and ceiling are fine - I just need additional insulation under the floor. The holding t...
Forum Discussion
ken56 wrote:The OP stated that some of the under floor space was ducted for heating. Wouldn't that eliminate humidity as a problem?
Just like a crawl space in a home it still needs some type of ventilation too. You do not want to seal it up air tight because it will hold moisture. Plain old condensation will occur with the natural humidity and heat and cool temps through out a typical day and night. You could possibly rot the floor from the bottom up.
FWIW, I removed the floor in my old Starcraft after 42 years to add additional insulation. The under belly is sealed with a continuous sheet of aluminum. There was no sign of rot or condensation damage whatsoever.
I'd suggest to cut foam board to friction fit those spaces around pipes and tanks. LarryJM did a great job on his trailer, the pictures in his album say it all.
