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Old 03-22-2020, 01:15 AM   #157 (permalink)
Xist
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Diagram not to scale

Would it have been faster to learn SketchUp and do it that way?

I was trying to visualize this without doing trigonometry, but to me this looks like a 20 x 30 shed, not 8 x 14.

The joists are 2x4s. I think that it makes more sense to use two 2" layers of foam insulation and 1x2s on the 2x4s than a 2" layer, a 1" layer, and a .5" layer.

However, the friendly neighborhood Home Depot doesn't have enough 2" boards, and Lowe's does not have any.

I cannot have them delivered, either, or even shipped to-store. Either I use what I have or I drive 75 - 100 miles for 7 boards.

I will have tons of scraps, though, so I wonder if I might have enough after all.

I think that I mentioned that the big boxes of spray foam are not available locally. There are 16 boxes rated for 200 board feet. The reviews say it does 600 square feet in the best-case scenario--one inch thick. The walls and roof are about 448 square feet, so I would get a little more than 1" of insulation on all surfaces for $770, and I would need to have it shipped.

I can almost buy 21 2" foam boards for that price!

Drywall would cost $200. Better-looking and cheaper sound great, but that Luanne only comes in 2x4 boards! That is way more boards to handle!

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