Quote:
Originally Posted by rsmurano
Misinformation on a couple of threads. I built a custom home in Georgia and I used this closed cell foam in my attic and walls and my attic (5500 sq ft home) was always 70 degrees in the attic.
The 2 posts above that had misinformation were the ones that said you still needed a ridge vent and baffle. NOT TRUE! The foam was sprayed directly onto the plywood in the attic and in each cavity between the studs in the walls. I know, I watched them spray it.
I had no vents at all, it was a completely sealed attic: no ridge vents, no soffit vents, no can vents, no builders gap. I also had a friend that put this in his exiting home and the 1st thing they did was to seal his whole attic: take out all the vents.
There are 2 types of foam and there is a big difference in price, the closed cell being the most expensive. And yes, if you develop a leak, you won’t know it for a long time if it’s closed cell because it’s so dense, it will have to soak thru all this foam then onto your drywall in the ceiling before noticing you got a leak.
If I built a new home, I would definitely put it in because it’s too big of an expense sealing all the vents/soffits before spraying
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I agree. We have had foam insulation in several homes and it is by far the Best insulation you can get. The only thing is you need to make sure the person doing it knows what they are doing. I am not sure close cell is worth the extra money unless you plan on staying in that house for a long time. I have been considering doing my garage with foam. It gets so hot in there I could cook a pizza on the hood of my car!