ASM Membrane Gutter (Insulated Assembly)
ASM Membrane Gutter (Insulated Assembly)
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ASM Details
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1 WORK INCLUDED
- (1) Deck overlay
- Required for continuous support of the underlayment when the deck is not suitable.
- (2) Underlayment (lower)
- The type of underlay required is determined by roof slope.
- (3) Wood blocking
- (4) Insulation (lower)
- Tapered to support gutter membrane, which is tied into underlayment, to ensure any water intrusion into roof system drains into gutter.
- (5) Built-in Gutter Membrane
- (6) Underlayment (upper)
- (7) Upper insulation
- Tapered at lower edge to conform to lower insulation slope. All flat panels must be offset and stagger layers 300 mm (12").
- (8) 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)).
- (9) Ventilation layer
- Recommended over asphaltic underlays and / or as required in this Standard (see 8.1.2 Design).
- (10) Bearing plate
- Only thermally non-conductive clips or bars passing through the insulation assembly, or mechanically fastened bearing plates, may be used to secure and support insulation panels, or provide support for panel clips.
- (11) Architectural metal panel clip
- (12) Architectural metal roof panel
- Lower, installed prior to the pipe flashing, cut hole large enough to allow for movement. Extend 400 mm (16") upslope beyond the pipe.
- (13) Mastic (2-ply SBS) or Sealant (Single plies)
- Drain flange must be embedded in a membrane-compatible mastic and secured to the gutter structure.
- (14) Drain body
- Mechanically secured through flange (for all drain types, see Part 11 DRAINS and PENETRATIONS in the relevant membrane standard in this Manual).
- (15) Strainer
- (16) Gutter membrane
- Refer to the relevant membrane standard for application requirements (SBS, EPD, TPO or PVC).
- (17) Parapet cap flashing
- Refer to Part 10 PERIMETERS and WALLS in the relevant membrane standard in this Manual.
2 RELATED WORK BY OTHERS
- (A) Acceptable Deck
- (B) Built-in Gutter structure. Sloped to drain.
- (C) Parapet
NOTE: See the Standard for additional requirements.
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