Hi, Now with winter fast approaching, I'm revisited by an issue I noticed last year during our 1st winter in the house. I noticed that the small crawl space in the attached garage which I believe goes over my family room/laundry room is not insulated. This makes my family room pretty cold in the winter and I have to overcompensate the heat in that room by increasing the thermostat. I'm thinking of cutting some holes in the drywall in the garage and stuffing it with some R30 insulation. Do you think this will help with the air drafts? Or would I be better hiring someone to spray foam in the small crawl space attic above the family room/laundry room and garage? Thank you!

We have a barn with a loft. Lately we've decided to make the loft more of a living space for the kids to hang out. However, the main clearance is only about 6 1/2 feet, with the outside edges much lower. Unfortunately, the roofing nails protrude and I'm worried someone will bang their head on them. I don't want to drywall against the studs because we would lose so much space (and I think it would feel more cramped). What I'd like to do is some sort of styrofoam (or any material) insulation that we could put between the studs and to cover the nails. Is there such a product? Thoughts/suggestions?