for an unvented building without having insulation earlier mentioned the sheathing, how about using wood fibreboard concerning the rafters instantly below and in contact with the sheathing? All gaps among the boards and the rafters stuffed with expanding foam / sealant. You might then cover the rafters with rigid foam to carry your insulation nearl

It's fine so as to add foam board over the roof deck Despite the closed cell foam-board (what sort?) on the interior. Roof decks won't be able to dry to the exterior by means of 0.1 for each shingles in any case, notably because in zone 5 it is going to devote a big period of time covered in snow/dew/rain With all the humidity travel heading inward

On an unrelated matter: The Chilly Local climate Housing Analysis Heart has produced a video clip (beneath) displaying 1 means of setting up an insulated cathedral ceiling. The method shown while in the online video is particularly suitable for builders in climates topic to ice dams.A. You ought to only use an set up approach that the insulation co

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