Reply by Robert

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Posted on Insulating detached garage shop

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4553 posts in 2559 days

#1 posted 07-16-2019 02:37 PM

90% of your heat gain is from the roof. In the winter, the walls will work against you.

For now, I wouldn’t insulate the walls. I would install a ceiling (2×6 joints) and R19. Plywood or sheet rock for the ceiling. There are other options such as rigid foil coated sheets. Not sure about applying right next to wood.

That said, my first choice would be spray foam applied directly to the bottom of the roof. Its such a small job you may have trouble getting it done. There are place that will rent a foam machine. Factor the coast against all the carpentry, insulation, soffits and time.

-- Everything is a prototype thats why its one of a kind!!

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