Best Three Season Bottom Floor Insulation
Been trying to wrap my mind about how to go about insulating the bottom of our three season trailer. Our little Sunnybrook Harmony has exposed tanks and I am in the process of installing tank heaters....
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I'm assuming your trailer has a black woven cover on the underbody with the tanks hanging under that. When the RV manufacturers insulate from this point they usually use fiberglass insulation (think pink spun fiberglass insulation from home depot)They hold this up with a large sheet of coroplast. This is like cardboard made out of plastic. They put the insulation up then they put the coroplast up, and run a bunch of self tapping screws through the coroplast and into the bottom of the frame rails. Add a bit of self expanding spray foam where the drain pipes exit the coroplast and you're done.
coroplast
coroplast
