Screws on metal roofing should be spaced 12 to 24 inches apart, depending on the panel type and wind conditions in your area. Most metal roofing contractors use 16-inch spacing as the standard. Proper spacing keeps water out and holds panels tight during storms. Using too few screws can cause leaks and panel flutter. Using too many wastes money and time. Getting the spacing right is one of the most important steps in metal roof installation.
Why Screw Spacing Matters
Metal roofing panels expand and contract with heat and cold. If screws are too far apart, panels can shift and create gaps. Water gets in through these gaps and causes leaks. Bad spacing also lets wind get under the panels.
According to RubyHome (2025), metal roofing lasts 40 to 80 years when installed correctly. Proper screw spacing is a big part of that long lifespan. Loose panels fail much faster.
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Standard Spacing Rules
Most metal roofing comes with a fastening pattern. Read the manufacturer’s guide before you start. The pattern tells you exactly where to place screws.
| Panel Type | Screw Spacing | Wind Conditions |
|---|---|---|
| Standing seam | 12-16 inches | Most areas |
| Exposed fastener | 16-24 inches | Low wind |
| Corrugated metal | 12-18 inches | All areas |
High Wind Areas Need Closer Spacing
If you live where storms are common, use tighter spacing. Texas, Florida, and other hurricane zones need 12-inch spacing. This keeps panels from lifting off during extreme weather.
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According to the Insurance Information Institute (2024), 12 million U.S. properties were hit by hail in 2024. Proper fastening reduces damage claims. Close screw spacing is your best defense against storm damage.
Common Fastening Mistakes
Over-tightening screws cracks the washers and lets water in. Under-tightening lets panels move. Use a torque gun set to the right pressure.
Never skip screws to save time or money. According to industry data, metal roofing holds value and lasts longer than asphalt shingles, which last only 20 to 30 years. But only if you install it right. Use the right screw type too. Stainless steel or galvanized screws resist rust better than regular steel.
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Talk with a local professional roofer to review your options and get a detailed estimate for your project.