Hi guys. My wife and I are in the late planning stages of building our new home. I want it to be as energy efficient as possible. We are having a slight disagreement. We are going to use galvanized roofing.
I want foam insualtion in walls and attic. She is ok with that. What we disagree about is how to do the attic.
Her ex-husband is a HVAC contractor. He says we should use the " foam the underside of the roof, seal the attic and semi condition it" method. Our builder agrees.
My problem with that is, why would I want to semi condition an area the same size as my house if I am never going to use it for anything? I want to foam the attic floor, and make sure the attic is well venitaled. Why is allowing my warm and cold air (that I am paying to heat and cool) to migrate up into my attic a good idea? Isn't it more efficient to keep that expensive air in the house by well insulating the attic floor? I don't have any plans to ever use the attic, It wont have high enough ceilings.
We live inorth of Dallas, Texas where the summers can be brutal and the winters pretty damn cold
Can anyone give me advice on why my thoughts are wrong?