What is the best roof pitch for high winds?
Short answer. Wind research generally finds that hip roofs with moderate pitches, often cited around 5/12 to 7/12, see lower uplift than flatter or very steep roofs, and that hip roofs outperform gable roofs of the same pitch. On an existing Georgia home, though, edge details, nailing, sealed shingles and roof-to-wall connections matter far more than pitch, which you cannot easily change.
How pitch changes wind forces
- Low slopes, under about 4/12, act somewhat like a wing: wind flowing over them creates strong suction, especially at edges and corners.
- Moderate slopes balance suction and direct pressure, which is why they tend to perform well.
- Very steep slopes catch wind like a wall on the windward side, raising pressure on the structure.
Shape matters more than pitch
- Hip roofs slope on all four sides, with no tall, flat gable end for wind to push on, and generally see lower uplift.
- Gable roofs are vulnerable at the gable ends and rakes, where shingles and sheathing tend to peel first.
- Overhangs catch uplift, so deep overhangs need solid framing connections.
What you can actually improve
- Starter strips with sealant at the eaves and rakes, so edges do not peel.
- Shingles with high wind ratings, nailed to the manufacturer's high-wind pattern.
- Drip edge fastened tightly, and deck nailing checked during a reroof.
- Sealed roof deck seams, part of the IBHS FORTIFIED Roof standard.
- Straps or clips connecting the roof framing to the walls, usually a retrofit or addition project.
Georgia storms bring straight-line winds and occasional tornadoes, and most roof losses start at edges and ridges. See wind damage to roofs in Georgia and drip edge explained. Robust Roofing compares the two common shapes in its guide to hip vs gable roofs and wind.