A2O Zephyr Rooflight Replacement QA Checklist
by William Carter, from the Community
A step-by-step quality assurance checklist for replacing Zephyr rooflights on composite panel roofs. Covers preparation and cleaning, end-lap and sidelap sealing with butyl tape, Kingspan KS1000RW and KS100RW references, correct use of stainless steel primary and stitching fixings with EPDM-backed washers, intermediate purlin fixings, and side lap cover caps. Includes instructions for photos, notes, assigning corrective actions, and capturing installer, contractor, and client signatures.
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