Draft CD 7

Notice to Reader

Images used in a Construction Detail are representative and not intended in their representation of an assembly to be prescriptive. Nor are they necessarily drawn to scale. Rather, they are provided to visually convey the Standards, Guiding Principles and Recommendations of the RoofStar Guarantee Standards for a Waterproofing or Water-shedding System. Actual design with respect to dimensions, the selection of materials and their application remains the responsibility of the Design Authority. The full text of applicable RoofStar Guarantee Standards may be read by using the blue hyperlinks

SBS Details

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1 WORK INCLUDED

(1) Air or Vapour Control Layer

Installed following the requirements of Part 6 in this Standard. Tie in the control layers with membranes installed by other trades, to preserve continuity of the building enclosure (1a).

(2) Insulation

Installed in staggered and offset layers (not illustrated), and secured in accordance with the design of the system, which is based on the British Columbia Building Code, Part 4 and Part 5, and on Part 3 of the RoofStar Guarantee Standards for the membrane system type.

(3) Insulation Overlay

Subject to the requirements of Part 8 in the RoofStar Guarantee Standards for the membrane system type.

(4) Base Membrane (field)

Mechanically attached, torch-applied, adhered or self-adhered. See Tables 9.1 and 9.2 for acceptable membrane types and securement options. See 9.3 for application requirements.

(5) Base Membrane (flashing)

Carried vertically up a wall or parapet at least 200 mm (8”), and onto the roof field at least 100 mm (4”) (greater if required by the membrane manufacturer). Prime substrate, as required by the membrane manufacturer.

(6) Cap Membrane (field)

Granule-surfaced membrane. See Tables 9.1 and 9.2 for acceptable cap membrane types and their securement options. See 9.3 for application requirements.

(7) Cap Membrane (flashing)

Extended vertically past the termination of the base membrane flashing, to provide a positive seal at the top edge.

(8) Metal Cant Flashing

Secure metal flashings with appropriate fasteners set at least 87 mm (3 ½”) above the finished roof surface. Alternatively, secure flashing from the outside face (illustrated). See 13.3.7 Cant Edges for metal flashing securement requirements.

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2 RELATED WORK BY OTHERS

(A) Acceptable Deck

(B) Cant and Fascia Woodwork

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.

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