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 cause structural damage and costly repairs. If you don't take care of your roof, molds, mildew and debris can cause structural damage and costly repairs. It is important you have the necessary tools to take care of your roof. First you will need a utility knife. They can be used to cut drywall, trim asphalt roof shingles, and slice through fiberglass insulation. They are relatively safe to use since the razor-sharp blade can be retracted. In addition to 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 roof installation contractors Rockville MD recommend the straight claw hammer. To cut wood, shingles or roofing panels, a circular saw would be the best tool. A circular saw is an electrically-powered tool can cut roof panels and plywood sheathing into an array of different sizes. To hammer nails in, abandon the manual hammer and opt for a nail gun. Compressed air is used to push the nails from the loaded gun. roof installation contractors Rockville MD