Draft CD 6

RoofStar Guarantee Standards are blue-linked

SBS Details

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(1) Air or Vapour Control Layers: If required by design authority
(2) Insulation: See available insulation products in the Accepted Materials section of this Manual.
(3) Insulation Overlay: Where required.
(4) Primary Membrane and Membrane Protection: Mechanically fasten to outside face of fascia (C).
(5) Mastic: Trowel coating of compatible mastic.
(6) Metal Edge/Gravel-stop Flashing: Flashing must have a minimum 100 mm (4") flange that extends onto roof base membrane. A flush termination is permissible and more common than a "gravel stop" (see 10.3.5.2 Metal Edge Terminations for application standards). Where a gravel-stop upstand is desirable (shown in the detail at left), it must not be higher than 25 mm (1") high.

Embed the flashing in mastic and mechanically fasten alternately between centre and edge of flange at 100 mm (4") O.C. Lengths of flashing may be joined end-to-end with an overlap no less than 100 mm (4").
(7) Membrane Flashing: Asphalt and gravel roofing systems, 2 overlapping plies of a minimum 2 mm reinforced SBS modified bitumen base sheet. For flexible membrane systems, refer to manufacturer’s application details and RoofStar Guarantee Standards.
(8) Asphalt: For asphalt and gravel built-up roofing systems only.
(9) Gravel: For asphalt and gravel built-up roofing systems only.

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.