What is a wind uplift rating?

A roof's wind uplift rating tells you how many pounds per square foot of upward wind force the system can resist without failure. This rating applies to the entire assembly: shingles, underlayment, deck fasteners, and the connection to the structure itself. Testing labs evaluate these components as a unit, then assign a rating that applies to the weakest link.

For property owners in Georgia, especially those near the coast or in high-wind zones, uplift ratings directly affect insurance eligibility and replacement costs. The state's wind zones range from inland areas with lower requirements to coastal counties like Chatham, Glynn, and Bryan where higher ratings are mandatory. Insurance companies often demand specific minimum uplift ratings before they will issue coverage or offer favorable premiums.

Typical residential shingle systems in Georgia are rated between 60 psf and 130+ psf, depending on fastener type, attachment pattern, and deck substrate. Underlayment and starter strip ratings also factor into the system's overall performance. A roof rated 90 psf, for example, means it resists wind pressures up to 90 pounds pushing upward on every square foot of roof area.

Contractors performing roof replacement in Georgia must verify uplift ratings match local building code requirements and your insurance policy's specifications. During installation, fastener spacing and pattern become critical, as improper installation can reduce a system's actual performance below its rated value.