Asphalt shingles are specified on a low-slope roof area below the normal steep-slope range. What should the contractor verify before installation?
Correct Answer
D) That the roof slope and underlayment method are permitted for the selected shingle assembly.
Low-slope asphalt shingle work needs the roof slope and underlayment method checked against the applicable California roof-covering provisions and manufacturer requirements.
Why This Is the Correct Answer
Low-slope asphalt shingle work needs the roof slope and underlayment method checked against the applicable California roof-covering provisions and manufacturer requirements.
Why the Other Options Are Wrong
Option A: That shingles are installed without underlayment to let the deck dry faster, after the first rain event on the project site.
That shingles are installed without underlayment to let the deck dry faster, after the first rain event on the project site. may relate to another site control, but it does not remove or guard the roof covering slope and underlayment exposure being tested.
Option B: That the slope is ignored if the owner accepts the appearance.
That the slope is ignored if the owner accepts the appearance. may relate to another site control, but it does not remove or guard the roof covering slope and underlayment exposure being tested.
Option C: Leave the rough condition in place where asphalt shingles are specified on a low-slope roof area below the normal steep-slope range, and defer the correction until after the next trade.
Leave the rough condition in place where asphalt shingles are specified on a low-slope roof area below the normal steep-slope range, and defer the correction until after the next trade. may relate to another site control, but it does not remove or guard the roof covering slope and underlayment exposure being tested.
Memory Technique
the controlling choice lock for Reviewing Residential: low-slope is the harm, asphalt is the guard.
Reference Hint
Study anchor (closed-book): memorize Roof covering slope and underlayment from 2025 California Building Code and 2025 California Residential Code. / Title 24 California roof covering slope and underlayment provisions; know the rule or calculation trigger without relying on exam-room lookup.
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