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Question 1
Which ASTM standard governs the material requirements for TPO (thermoplastic polyolefin) single-ply roofing membranes?
Correct Answer:
ASTM D6878
Question 2
Which ASTM standard governs the material requirements for PVC (polyvinyl chloride) single-ply roofing membranes?
Correct Answer:
ASTM D4434
Question 3
What is the minimum seam width typically required for hot-air welded TPO and PVC single-ply membrane seams per NRCA guidelines?
Correct Answer:
1.5 inches
Question 4
During hot-air welding of thermoplastic membranes, a technician uses a hand probe after welding. What does a properly welded seam feel like when probed at the seam edge?
Correct Answer:
The probe cannot be inserted and the seam edge shows a small bead of melted membrane
Question 5
What is the typical hot-air welding temperature range used for thermoplastic TPO and PVC membrane seams?
Correct Answer:
380–1100°F
Question 1
Exam overview

About this Exam

Prepare with the NRCA Thermoplastic Practice Questions - NRCA ProCertified Thermoplastic Installer Exam practice quiz. This question bank includes 100 questions covering thermoplastic, roofing, membrane, welding, and roof. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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NRCA Thermoplastic Practice Questions - NRCA ProCertified Thermoplastic Installer Exam

This practice set contains 100 questions from the matching question bank and focuses on thermoplastic, roofing, membrane, welding, and roof. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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