Panel Profile Edge Fasteners Field Fasteners Special Conditions Standing Seam 12 to 18 inches 24 to 36 inches High Wind Zones: 12 to 24 inches Corrugated 6 to 12 inches 12 to 18 inches High Wind Zones: 6 to 12 inches These measurements refer to the distance from the center of one screw to the next. If a screw slips and damages the rubber, it must be replaced immediately; a reused gasket will not provide an adequate seal.
Avoid Oil Canning with Correct Screw Placement
Furthermore, screws must be driven into the solid structural members, such as beams or rafters, rather than merely spanning between them. Conversely, under-tightening leaves the gasket loose, allowing water to seep through.
Edge transitions and roof penetrations require tighter spacing to counteract the lifting forces specific to these vulnerable areas. Screws should be driven in a single, smooth operation to avoid nicking or cutting the gasket.
Correct Screw Placement to Avoid Oil Canning and Ensure Panel Stability
Strategic Placement for Wind Uplift Resistance Wind is the primary enemy of a metal roof, and screw placement is the main defense against it. Proper metal roofing screw placement is the single most critical installation detail for long-term performance.
More About Metal roofing screw placement
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