Originally Posted by CMSmith
So is there a better insulation to use once a floor is replaced so moisture does not get trapped against the frame?
I'm doing a frame-off floor replace on my 1965
Streamline (an airstream copy), and I have decided to use a spray in foam insulation that is water pepellant and helps seal all cracks . I would imagine you could also use a bedliner material such as rhinoliner or line-x liner as this would coat the bottom of your wood floors as well as the frame and provide temperature and noise insulation as well. Batt insulation is used from the factory because it is inexpensive and quick to install with no delay in build time due to drying or curing times that are required by spray in insulations.