SBS Plumbing Vent (Conventional Roof System)
SBS Plumbing Vent (Conventional Roof System)
Division D - Construction Details
SBS | Plumbing Vent (Conventional Roof System) ( Article 12.3.2.1.)
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SBS Details
1 WORK INCLUDED
- (1) Supporting Deck Overlay
- If specified and included in a Tested Assembly, an Assembly with Proven Past Performance, or a custom-engineered assembly.
- (2) Air or Vapour Control Layers
- As required by Design Authority.
- (3) Air or Vapour Control Layer Tie-in
- Illustrated to show AVB continuity with penetration.
- (4) Insulation
- Multiple layering shown (Refer to Part 7 for design, material, and installation requirements).
- (5) Insulation Overlay
- As required by the RGC Standard; see Part 8 for design, material, and installation requirements. Additionally, an overlay is required is included in a Tested Assembly, an Assembly with Proven Past Performance, or a custom-engineered assembly.
- (6) Field Base Sheet Membrane
- Selected to conform to the requirements in Table 9.2.1.1. and conforming to the options or requirements in a Tested Assembly, an Assembly with Proven Past Performance, or a custom-engineered assembly.
- (7) Penetration Flashing
- Purpose-made non-ferrous plumbing vent flashing with separate settlement cap (Item 11), sized to fit the penetration, bedded in a membrane-compatible mastic, and installed with screw fasteners. Aluminum flashings are required for torch-applied roof systems.
- (8) Membrane Target Patch
- Sized to extend at least 101.6 mm (4”) past the edge of the penetration flashing flange and sealed to the field membrane and primed flange.
- (9) Field Cap Sheet Membrane
- Selected to conform to the requirements in Membrane Composition, Thickness, and Selection Table 9.2.1.1. and conforming to the options or requirements in a Tested Assembly, an Assembly with Proven Past Performance, or a custom-engineered assembly.
- (10) Mastic
- Applied to edge of membrane and immediately covered with granules (not shown).
- (11) Settlement Cap
- Sized to fit both inside the penetration pipe (to direct rainwater into the penetration) and outside the flashing (a snug fit, secured with a screw, is required to keep the cap in place).
Optional: Vandal-proof cap (not shown).
- (12) EPDM Membrane Wrap (Optional)
- Used when the plumbing pipe cannot be cut down to fit inside the flashing (Refer to Article 12.3.2.1., Sentence (16)).
- (13) Flashing Insulation
- Factory-applied for insulated flashings, used where condensation between the pipe and the flashing is possible.
2 RELATED WORK BY OTHERS
- (A) Supporting (Structural) Roof Deck
- Steel deck illustrated.
- (B) Plumbing Penetration
- Extend to match top of metal flashing.
NOTE: See the Standard for additional requirements.
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