Quote:
Originally Posted by Muttley
...According to Keystone, the R value of my unit in the floor is 27.
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Thats misleading on Keystones part. If you have slides, the only thing between you and the ground is a piece of OSB. R value might be 2, if your lucky.
Best place to put the rigid foam is directly on your slides. (Bottom, sides, roof). Just close off underbelly with vinyl to stop wind. 1.5 in rigid foam (blueboard) only has an R value of 7 iirc.