When sawing wood, take time to consider which side of the material will be facing up. Keep the good side up when you are using a hand saw, scroll saw, band saw or radial-arm saw. Keep the good side down when you are suing a portable circular saw, table saw or sabre saw. The principle is to have the tooth of the blade first break through the rough side of the board or panel.
Recessed light fixtures can poke into the attic insulation and create a pathway for air leaks. Caulk around them from below with high-temperature flexible caulk.