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Fastener Placement

Roof fasteners should be placed at the crest of the profile. Wall cladding fasteners can be placed at the crest or the pan. Pan fixing of wall cladding is more popular as the screw lines are less visible.

N.B. The pullover design values established by testing for pan fixing are more than twice those for crest fixing.

/cop/installation/fastener-installation#fastener-placement
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