SC Roofing Practice Questions - South Carolina Roofing Contractor Examination Exam

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A three-tab shingle is nailed 1 inch above the cutout, through the sealant strip, with the nail heads breaking the shingle surface. The most likely result is:

A stronger wind rating because the nails are closer to the butt Leaks and blow-off: nails through the sealant prevent sealing, overdriven heads tear the mat, and high nailing misses the underlying headlap No effect, because any nail in the shingle is acceptable Automatic compliance with ASTM D7158 Class H

Correct Answer:

Leaks and blow-off: nails through the sealant prevent sealing, overdriven heads tear the mat, and high nailing misses the underlying headlap

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