EcoRenovator - View Single Post - Remodeling the office (new floor, ceiling & adding insulation) passive house retrofit

Daox · 08-09-11, 12:14 PM

After doing a little research and pricing I think I'm leaning toward using rigid foam and great stuff. There is added work there to install it, but the price difference is pretty huge. A 200 board foot kit of spray foam would cost me $425 shipped. That would give me about 1.75" thick layer on the wall with an R value of just under 11. Alternatively, I can get 1" polyiso with an R value of 6.5 for $60 for the whole wall. Great stuff would be an additional $20 maybe? If I wanted to double up the polyiso I could easily do that and still be at half the cost of the spray foam.

08-09-11, 12:14 PM	#14
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 5,525 Thanks: 1,162 Thanked 374 Times in 305 Posts	After doing a little research and pricing I think I'm leaning toward using rigid foam and great stuff. There is added work there to install it, but the price difference is pretty huge. A 200 board foot kit of spray foam would cost me $425 shipped. That would give me about 1.75" thick layer on the wall with an R value of just under 11. Alternatively, I can get 1" polyiso with an R value of 6.5 for $60 for the whole wall. Great stuff would be an additional $20 maybe? If I wanted to double up the polyiso I could easily do that and still be at half the cost of the spray foam. __________________ Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.