Fibreglass Insulation On Edge????

martian_barnacle · 4 Jun 2006

Would fibreglass insulation be less effective if installed between roof trusses with its edge facing the room and the cold side vs. the normal way of the flat face facing inside and outside? I'd like to do this because I have trusses on 1 foot centers and 2 pieces of R20 would fit nicely between them. I would cut a 23 inch batt down the middle giving me 2 pieces 11.5 inches wide. Installed "edgewise" that would give me about R42...with very little waste (the motiviation for doing this edgewise thing). Any thoughts?

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Fibreglass Insulation On Edge????

martian_barnacle

DIYnot Local

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