Red Seal Carpenter Complete Practice Exam 2026

Moisture build-up between a rainscreen type cladding and the outside face of the wall can be a major concern for the long-term health and performance of a building. While options A, B, and D may seem like viable methods for preventing moisture build-up, they do not address the root cause of the issue. Drainage holes every 1200 mm (4') and sealing continuously may not provide enough drainage for the amount of moisture that can accumulate between the cladding and the wall. Installing the cladding vertically may also not prevent water from penetrating the wall if there are any gaps or areas where water can seep through. Option C, providing a secondary drainage plane and weep holes, helps to create a path for any water that does get behind the cladding to escape and prevent prolonged build-up of moisture. This solution addresses the issue at its source and is the best method for