SC Roofing Practice Questions - South Carolina Roofing Contractor Examination Exam

For asphalt shingles on a 3:12 slope, 2021 IBC requires:

No underlayment if self-sealing shingles are used Double underlayment application A built-up roof under the shingles Spaced sheathing and no underlayment

Correct Answer:

Double underlayment application

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