Roofs are subjected to tear and wear due to constant weather exposure. If you don't take care of your roof, mold and mildew can build up. If you don't take care of your roof, mold and mildew can build up. It is important you have the proper tools to take maintain 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 they have a retractable razor blade. 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 residential roof installation contractors Annapolis MD 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 various different sizes. It is essential your roofing toolbox contains a roofing nail gun. Compressed air is used to force the nails from the loaded gun.