Patch the nail or screw holes by slipping a piece of roof flashing underneath the shingle. Add a bead of caulk or roof cement to the best and base edge of the flashing to help keep it in place. Check out plumbing vent boots and roof vents if drinking water https://sophisticated-roofing-exp64959.idblogz.com/34381762/5-simple-techniques-for-roofing-contractors-near-me