What wind rating do architectural shingles have?
Short answer. Most architectural shingles are rated to resist winds of about 110 to 130 mph or more under standard tests, shown on the wrapper as ASTM D3161 Class F (tested at 110 mph) and ASTM D7158 Class G or H (rated for 120 or 150 mph). Manufacturer wind warranties are separate, and higher limits often require specific starter strips, ridge caps and nailing.
The two test standards
- ASTM D3161: a fan blows on installed shingles. Class A is tested at 60 mph, Class D at 90 mph and Class F at 110 mph.
- ASTM D7158: measures uplift resistance of the sealed shingle and calculates a rating. Class D is rated for 90 mph, Class G for 120 mph and Class H for 150 mph.
Many architectural shingles carry both Class F and Class H on the wrapper.
Why ratings and real life differ
- Sealing. Both tests assume shingles are bonded by their sealant strips. A new roof installed in cool weather may not seal until warm, sunny days arrive.
- Nailing. Nails above or outside the nailing zone are the biggest cause of blow-offs at wind speeds well below the rating.
- Edges and ridges. Wind attacks rakes, eaves and ridges first, so starter strips and caps matter.
- Age. Old shingles lose sealant bond and flexibility.
- Debris. Flying limbs damage shingles regardless of rating.
Warranty limits are separate
Manufacturer wind warranties state their own maximum speed for a set number of years. Enhanced wind coverage typically requires the manufacturer's starter strips and ridge caps, and sometimes extra nails per shingle. Read roofing warranties explained for how this works.
Georgia context
Inland Georgia does not see hurricane-force winds often, but severe thunderstorm gusts, downbursts and the remnants of tropical systems regularly strip shingles. Most of those failures trace to sealing and nailing, not to the shingle's rating. See wind damage to roofs in Georgia.