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On a pretty regular basis, I see older houses being vinyl-sided after 1″ rigid styrofoam or foil-faced isocyanurate 4×8 panels have been installed over the original clapboard.
These contractors are not using the thin perforated foam used under vinyl siding either. For example, this guy is installing two layers of 1″ foam during a rehab of a late 1800’s home:
Most often I see this being used on less extensive remodels, jobs that seem only to include the foam and vinyl.
Wouldn’t this provide an ideal surface on which moisture escaping from inside the living space would condense? If it does, won’t these panels make it hard for this moisture to escape, trapping it against the wood siding? Isn’t this an awful lot like the synthetic stucco debacle or am I missing something here?
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On a pretty regular basis, I see older houses being vinyl-sided after 1" rigid styrofoam or foil-faced isocyanurate 4x8 panels have been installed over the original clapboard.
These contractors are not using the thin perforated foam used under vinyl siding either. For example, this guy is installing two layers of 1" foam during a rehab of a late 1800's home:
View Image
Most often I see this being used on less extensive remodels, jobs that seem only to include the foam and vinyl.
Wouldn't this provide an ideal surface on which moisture escaping from inside the living space would condense? If it does, won't these panels make it hard for this moisture to escape, trapping it against the wood siding? Isn't this an awful lot like the synthetic stucco debacle or am I missing something here?