Reply by nickajeglin

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Posted on Insulating detached garage shop

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9 posts in 672 days

#1 posted 07-18-2019 03:23 AM

Thanks for the good advice everyone. I’m in Nebraska. Spray foam seems to be the consensus, but I am worried that it could hide any leaks from above and hold water there. I totally agree that the rafters need reinforcement. There aren’t even any cross beams in the front half, and I can see cracks above the garage door where the roof has been trying to spread the walls.

Considering everything, I like the idea of stripping the roof down to the sheathing and adding a adhered water barrier, and then an insulated roof and new shingles. That would also probably allow me to extend the roofline out past the walls to keep water away from them, and possibly add soffits, internal insulation, and correct ventilation.

That does sound like a project that is too big and expensive for me right now though, so I’m leaning towards something like Carlos drew. That would add some extra support to the rafters, and then I’d also double up the current cross beams for wood storage. When the shingles inetivably need to be replaced, I can add the exterior insulation etc if needed. I will definitely find someone local to come check it out before I start.

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