System Logic
Metal Roof Membrane System
Coordinate roof drainage, exterior vapour-open protection, insulation moisture control, interior air tightness and wind-uplift restraint as one assembly.
Metal roof panels and flashings
Confirm material function, continuity, interfaces and inspection evidence at this layer before it is concealed.
Exterior waterproof breathable membrane
Confirm material function, continuity, interfaces and inspection evidence at this layer before it is concealed.
Insulation and supporting deck
Confirm material function, continuity, interfaces and inspection evidence at this layer before it is concealed.
Interior vapour and air control layer
Confirm material function, continuity, interfaces and inspection evidence at this layer before it is concealed.
Design and installation checks
- Separate field, perimeter and corner wind zones
- Keep laps in the drainage direction
- Restore continuity at fasteners and penetrations
- Photograph all concealed transitions before covering