The construction team is coordinating a method decision because membrane adhesion depends on substrate condition. Which roof substrate readiness is best?
Correct Answer
B) clean dry smooth substrate
clean dry smooth substrate best matches the stated condition. The other choices are real construction options in the same family, but they fit different field conditions.
Why This Is the Correct Answer
clean dry smooth substrate best matches the stated condition. The other choices are real construction options in the same family, but they fit different field conditions.
Why the Other Options Are Wrong
Option A: primed substrate where adhesive requires primer
primed substrate where adhesive requires primer addresses a neighboring field issue, but not the condition or method control required for roof membrane substrate.
Option C: secured cover board substrate
secured cover board substrate addresses a neighboring field issue, but not the condition or method control required for roof membrane substrate.
Option D: tapered insulation substrate sloped to drain
tapered insulation substrate sloped to drain addresses a neighboring field issue, but not the condition or method control required for roof membrane substrate.
Memory Technique
Roof Membrane Substrate method for Foreman Selecting: condition first, tool second.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Roofing methods; membrane substrate preparation; verify the construction method, material selection, equipment choice, or work sequence that fits the field condition.
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