SC Roofing Practice Questions - South Carolina Roofing Contractor Examination Exam

Why do long standing-seam metal panels use floating (sliding) clips rather than being through-fastened at both ends?

Floating clips are required only for copper, not for steel To allow thermal expansion and contraction along the panel length without buckling, oil-canning, or tearing at fasteners To eliminate the need for eave fasteners or a clip at the eave To reduce the IBC minimum slope from 1/4:12 to dead level

Correct Answer:

To allow thermal expansion and contraction along the panel length without buckling, oil-canning, or tearing at fasteners

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