rigid foam on early 20th cent. cabin
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We have a home in central Vermont that my great grandfather built. It is uninsulated and needs some new shake siding as well as a new roof. I was thinking a way to accomplish weather-proofing/extending the seasonal use of our cabin would be to install a thickness of rigid foam to the outside of the t&g 1/2″ sheathing on the roof and the walls and then re-install roofing and shakes. Idea being that the beauty of the interior would be saved i.e. not put up batts of insulation and sheet rock.
has anyone done this sort of thing?
Replies
Search for ACFoam. These are panels of polyisocyanurate foam bonded to a layer of 7/16" OSB. They would work perfectly for your cabin. I have used them on houses I have built. They come in various thicknesses up to 4" of foam at an R-30 reducing over time to an R-24. With very little thermal bridging through the foam, like you would have if insulating between framing members, the performance will be greater than you might expect. They are made by Atlas.