Are there impact-resistant architectural shingles?

How they earn the rating

Manufacturers toughen shingles in a few ways: rubbery SBS polymer modified asphalt that flexes instead of cracking, upgraded mats such as GAF's UltraMat, and reinforcing backings. In the UL 2218 test, steel balls of increasing size are dropped on the shingle; Class 4 means a 2 inch ball dropped from 20 feet left no crack.

Looks and installation

Impact-rated architectural shingles come in the same laminated, shadow-line styles as standard ones and install with the same tools and nailing patterns. Some are heavier, and SBS shingles stay more flexible in cool weather.

Georgia trade-offs

• Hail: North Georgia gets hail most springs, and some areas are hit repeatedly. A Class 4 roof resists moderate hail better.
• Insurance: some insurers offer premium credits for Class 4 roofs, and Class 3 often does not qualify. Ask your agent before you buy, and keep the wrapper and invoice.
• Claims: impact-rated shingles can still be damaged by large hail, and policies vary in how they treat roofs, so read yours.
• Cost: Class 4 shingles cost more than standard laminates; the gap varies by product and supplier.
• Warranty: manufacturers generally exclude hail from their limited warranties, even on Class 4 products.

Confirm the label

Ratings apply to packages carrying the UL 2218 statement. Some product lines changed construction over time, so do not assume an older roof with the same product name has the rating. See impact-resistant shingles in Georgia and Georgia hail season.