Before the inspection hold point, the team confirms that the project condition shows that bonding surface is dirty or contaminated. Which substrate condition is appropriate?
Correct Answer
D) Use substrate contamination prevents adhesion
substrate contamination prevents adhesion 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
substrate contamination prevents adhesion 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: Use approved staggered board layout
Use approved staggered board layout addresses a neighboring field issue, but not the condition or method control required for roof insulation adhesion.
Option B: Material choice: Use manufacturer-approved adhesive pattern
Material choice: Use manufacturer-approved adhesive pattern addresses a neighboring field issue, but not the condition or method control required for roof insulation adhesion.
Option C: Use dry substrate within limits
Use dry substrate within limits addresses a neighboring field issue, but not the condition or method control required for roof insulation adhesion.
Memory Technique
Roof Insulation Adhesion method for Manager Checking: condition first, tool second.
Reference Hint
Open-book path: tab Principles and Practices of Commercial Construction, 10th Edition to Roofing materials; insulation adhesive substrate conditions; verify the construction method, material selection, equipment choice, or work sequence that fits the field condition.
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