Roofs are subjected to damage because of factors such as extreme weather conditions and poor maintenance. If you don't take care of your roof, molds, mildew and debris can build up. If you don't take care of your roof, molds, mildew and debris can build up. It is important you have the necessary tools to take care of your roof. Make sure you have a utility knife. Utility knives can be used to cut drywall, trim asphalt roof shingles, and slice through fiberglass insulation. Utility knives are quite safe to use since the razor-sharp blade can be retracted. Aside from the utility knife, you will 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 experts Superior, WI recommend the straight claw hammer. Invest in a circular saw to cut singles or panels. A circular saw is an 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 strip unto the sheathing or shingles.