Fan of the spray foam. Makes a huge difference, zero penetration. Bit the bullet and had it sprayed in the house when we built. It was three times the price of bat 13 years ago but it paid for itself very quickly.
Agree 100%.
Just completed new construction in NC. Paid the upcharge for the spray foam, all exterior walls and underside of roof. The attic is now only a 10 ° difference from the living space temp.
Was a bit of a struggle to convince the contractor to insulate the 3 car garage. They insisted that Nobody insulates their garages here.
Anyway, finally completed and installed a 12k btu split unit the other day, what a difference. Ran it at 70° for half hour and took the 55° chill out. Very happy with it.
