SC Roofing Practice Questions - South Carolina Roofing Contractor Examination Exam

A fishmouth in a built-up or modified-bitumen roof is:

A factory edge designed to vent vapor at every side lap An open, unbonded wrinkle or edge at a lap that can take on water and must be cut out and patched The required 2-inch side lap on a nailed base sheet A decorative granule pattern on a cap sheet

Correct Answer:

An open, unbonded wrinkle or edge at a lap that can take on water and must be cut out and patched

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