re: Anyone here have their entire house spray foamed?

Buddy of mine sells it, I'll get quoted on it for sure when I build next year.

You will get a lot of opinions on foam. It's been around for a while but it's really just now catching on with mainstream building. Most contractors do not like it because if it's not done properly it will lend to issues that will be difficult to remedy. Foaming the entire residence will add around 20% to the construction cost in these areas. Foaming will require the use of different AC units and you will have to introduce outside air into the home. If you foam the attic you will have to use a special type of shingle designed to take the heat. If not you will actually melt the shingles in the dead of summer.

I know several people with total foam houses and they love it. Their electrical bills are half of what others pay with conventional insulation in same Sqft. They also say how quiet the house is from both inside noise and outside. Foam will deaden the noise transfer so if you have kids running around upstairs this is a plus.

It's more money up front but in the long run you will have a house that's more entergy efficient.

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The house has a 2' clearance under.

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My house is on piers of that height and I had the closed-cell foam sprayed under between the floor joists. This was back in 2007, so it was about $1200 for 900 sq ft, with the cured foam being about two inches thick. Only issue I’ve had is if you need to access plumbing underneath for repairs, the foam’s a bear to cut out around where you need to work. Once it’s on there, it’s definitely on there.