you never see the nails that stick through the roof in your house because ideally, they are nailed into the studs, the ones that missed are covered with insulation!? Who knew. Bending them over won't cause the roof to leak, and it's quick and easy to do, just don't push them back up through the roof. The tar in the shingles should heat up and fill in small holes.
Insulation would be ideal in hot or cold weather.
Insulation would be ideal in hot or cold weather.