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RE: Reroofing Over an Existing Deck: When Is the Assembly Still Compliant?
Mapping debonding by roof zone is useful, but exploratory cuts show conditions only where they are made. Unless the investigation method supports interpolation, areas between cuts remain uncertain, especially near transi...
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RE: Reroofing Over an Existing Deck: When Is the Assembly Still Compliant?
Don’t count retained insulation toward the required R-value unless its type, thickness, continuity, and moisture condition can be documented well enough for the code official to verify it. An old assembly report or orig...