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Provides exact measurements and diagrams for flashings, roof-to-wall junctions, decks, and window installations. Why You Need the Fourth Edition

The Third Edition remains valid for compliance until July 31, 2026 , for applications submitted before August 1, 2026. After this, the Fourth Edition becomes the primary pathway. Tips for Using the PDF Download e2as1 download

E2/AS1 stands for . It is a prescriptive guide that, if followed exactly, ensures a building complies with the mandatory requirements of the Building Code regarding weathertightness. Key Focus Areas for applications submitted before August 1