Which of the following components is not required to be fire-resistant in a commercial building's roof assembly?

ICC B2 exam practice question · Roof/Ceiling Construction

Which of the following components is not required to be fire-resistant in a commercial building's roof assembly?

ARoof sheathing
Roof underlayment
CRoof insulation
DRoof membrane

Exam tip

Always check the fire resistance requirements for each component of the roof assembly.

Why B is correct

Option B is correct as per Section 703.2.1 of the 2021 IBC, which does not require the roof underlayment to be fire-resistant. Option A, C, and D are incorrect as they must be fire-resistant to meet code requirements.

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Which of the following components is not required to be fire-resistant in a commercial building's roof assembly?

Which of the following components is not required to be fire-resistant in a commercial building's roof assembly?

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