Roofs are subjected to tear and wear due to factors such as violent weather conditions and poor maintenance. If your roof isn't taken care of, molds, mildew and debris can build up. If your roof isn't taken care of, molds, mildew and debris can build up. It is important you have the proper tools to take care of your roof. First you will need a utility knife. Utility knives can be used to cut drywall, trim asphalt roof shingles, and slice through fiberglass insulation. Utility knives are pretty safe to use since the razor-sharp blade can be retracted. Aside from the utility knife, you'll also need a roofing hammer that will refasten shingles and other roof coverings. A roofing hammer has two different head styles: one has a curved claw and the other has a straight claw. Most roofing company billings mt recommend the straight claw hammer. Invest in a circular saw to cut singles or panels. This electrically-powered tool can cut roof panels and plywood sheathing into an array of different sizes. Roofing nail guns are very efficient tools for hammering nails in. Compressed air is used to push the nails from the loaded gun.