Metal panels, shingles and what hail does to each
Outbuildings in this part of the metro are often covered in metal panels, while houses mostly carry asphalt shingles. Hail affects them differently. Shingles bruise and shed granules, which shortens their life and can lead to leaks. Metal panels may dent without leaking, so the question becomes whether the damage is only cosmetic.
Fasteners and seams are the weak points of a metal roof. Screws back out with temperature swings, the washers under them dry and crack, and a seam that opens in high wind lets in rain. For shingles, lifted tabs and creased shingles after a wind event are typical. We look at the surface, the fasteners and the flashing, and explain which type of damage affects the roof's ability to keep water out.





