spray foam insulation

Last spring, I was crouched at the edge of a homeowner’s attic hatch, flashlight in hand, while she read me three insulation quotes off her phone. Her 1,400-square-foot attic had racked up bids of $1,800 for blown fiberglass, and $7,500 and $9,200 for closed-cell spray foam from two other outfits. Every one of those three … Read more