The attic floor only has 7" of dead space which meant the highest rated insulation that would officially fit is R-19. However, we decided to squeeze in R-30 which officially needs about 9". By condensing it we will lose some effectiveness but it should still give us more insulation than R-19 would have. We were hoping to get some Energy Trust credits for this project but that doesn't apply unless you install R-38 or higher which wouldn't fit.
This project was SO anti-climatic because you can't see anything is different. The attic floor looks exactly the same as it did before. The only proof was the rolls of insulation that were in our entryway and are now gone. Hopefully more proof is coming in the form of lower heating bills!
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Awesome project to get done! Are you doing the walls, too? And I am jealous of your usable attic. Insulating ours was a bear. I had to crawl around in there for 2 hours. My hips were totally cramping up on me.
ReplyDeleteNot doing the walls right right now, but we plan to in the future. That product you used in your walls looks like a good one, we'll probably check that out.
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