ASM Roof-Wall Connection (Head-wall)
ASM Roof-Wall Connection (Head-wall)
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ASM Details
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1 WORK INCLUDED
- (1) Deck overlay
- Required over some deck surface to provide a solid or continuous substrate for roof system materials. Here, a deck overlay is provided to support a continuous AVB layer.
- (2) Underlayment
- Applicable for all Architectural Sheet Metal systems. For slopes less than 1:3, the entire roof slope must be covered with a self-adhered underlayment.
- (3) Insulation
- Installed with offset side and end joints.
- (4) Vapour-permeable separation membrane
- Installed over insulation and required on all insulated Architectural Sheet Metal Roof Systems. The material must be located between the insulation and metal panels/ventilation material (see 8.1.2 Design).
- (5) Ventilation material
- A ventilation space is required on slopes less than 1:3; entangled mesh (shown) may be used as void fill. The ventilation space facilitates drying as condensation forms on the underside of the metal panels.
- (6) Metal Panel Clip
- Installed to metal roof panel manufacturer's printed instructions.
- (7) Bearing plate
- Used to support clips and distribute dead and live loads when direct contact with a solid substrate is not possible.
- (8) Architectural metal roof panel
- (9) 'Z'-Closure
- Set in acceptable sealant and secured with compatible, non-corrosive, flat head fasteners.
- (10) Sheet Metal Flashing
- Hooked to 'Z'-Closure and fastened to wall with non-corrosive, flat head fasteners 300 mm (12") o/c or preformed foam closures set in acceptable sealant with high domed gasketed cladding type screws at each standing rib.
- (11) Metal Counter Flashing
- Must extend behind wall system and wall control layers. Stucco stops are not considered to be a counter flashing.
2 RELATED WORK BY OTHERS
- (A) Acceptable deck
- (B) Wall control layers
- must be positively lapped with roof materials and flashings, to maintain continuity across systems.
- (C) Wall cladding
NOTE: See the Standard for additional requirements.
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