Tis the season! The season for fluke storms that cause wind and hail damage to roofs, that is. Asphalt roofs are subject to blow off for some of the following reasons:
1. Nail pattern wasn’t followed properly
2. Installed in cold weather which never allowed them to seal to one another
3. Staples instead of nails were used to install them
Metal roofs are warranted with a non pro-rated lifetime warranty to provide coverage for winds up to 130 m.p.h., or more. They mechanically attach to each other, so they don’t rely on sealants to keep them attached. And needless to say, staples are never used when installing a metal roof. Plus, there’s no way NOT to follow the nail pattern due to the design of each panel.