Before you get asphalt shingle roof installation get your roof thoroughly inspected by a professional roofer. The roofing contractor will be able to verify that the roof is in good condition or not. The asphalt shingles should be thoroughly inspected for any damage caused by water infiltration, wind, or fire. https://southshoreroofing2.tumblr.com/post/666184538733543426/the-process-of-shingle-roof-installation