Ensure correct installation of Y-Wall sheathing boards with a focused QA checklist. Verify screw edge distances of 12 to 15 mm around perimeters, fixing spacing no greater than 300 mm vertically and 600 mm horizontally, and corner fixings 50 mm from edges. Confirm application of fire rated sealant and tape to all board edges, maintain 2 to 5 mm gaps between boards, and seal any additional penetrations. Capture site details, inspector, date, and complete A2O representative sign off. Designed to support consistent on site quality checks; always confirm requirements against the latest fixing schedule and project specifications.
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