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Discussion Starter #1
I have a house on posts exposed to the open air, no walls below. I am wondering how to insulate. Wondering if i could nail 4 x 8 sheets of 2 inch rigid insulation under floor joices and tape all the seems. This would leave an air space between the joices. Seems like the easiest and cheapest way. Any ideas?
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#1, should have added your location as required to your profile, just going to have to guess without it.
Insulation needs to go between the joist, not over them.
There piers not post, how far above ground is the floor joist?
 
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