Carpenter Red Seal Exam Prep · Question
When installing house wrap as a weather-resistive barrier, how should vertical seams be treated, particularly at corners?
Vertical seams of house wrap should be overlapped by at least 50 mm (2 inches) and sealed with manufacturer-approved tape to create a continuous barrier against
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Question: When installing house wrap as a weather-resistive barrier, how should vertical seams be treated, particularly at corners?
Answer options: ✅ They should be overlapped by at least 50 mm (2 inches) and taped.
- They should be butted tightly together and covered with trim.
- They should be overlapped by at least 150 mm (6 inches) with no tape required.
- They should be sealed with caulk only.
Correct answer: They should be overlapped by at least 50 mm (2 inches) and taped.
Explanation: Vertical seams of house wrap should be overlapped by at least 50 mm (2 inches) and sealed with manufacturer-approved tape to create a continuous barrier against air and moisture intrusion. Larger overlaps are not typically required, and butting or caulking alone would not provide adequate protection.
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