Roofs are subjected to damage due to factors such as violent weather conditions and poor maintenance. If your roof isn't taken care of, molds, mildew and debris can cause structural damage and costly repairs. If your roof isn't taken care of, molds, mildew and debris can cause structural damage and costly repairs. Because of this, it is important you have the correct 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 the razor-sharp blade can be retracted. Besides a utility knife make sure you purchase a roofing hammer with a straight claw. To cut wood, shingles or roofing panels, a circular saw would be a worthwhile investment. 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.home roofing repair estimate O'Fallon MO