What is the R value of the trailer walls? I know most trailers are only 1” styrofoam at best, so wondering how fibreglass and foam compare.

We've had the engineering team comment on this one. R value is between 3-4 on the walls, when looked at as a complete system. Our best performing layer is the closed cell polyethylene foam, the headliner foam is about 3/4 as effective, the fiberglass layer is about 1/2 as effective.