I am thinking of installing exterior foam insulation and stucco all around my house.
I live in Phoenix, AZ so the climate is very dry and hot. The MAIN goal is to keep as much heat outside and keep my home cool.
My home is a very old brick wall home.
My main question is this:
Does the thickness of the EPS foam board matter in terms of how much better it will keeps heat out? I contacted a contractor that installs stucco and he said it really does not make much of a difference between installing 1 inch thick board vs a 2 inch thick board, or somewhere in between.
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