SBS 11.3.2.2-1 Cast Iron Drains

Jump to: navigation, search

SBS 11.3.2.2-1 Cast Iron Drains

Revision as of 19:10, 30 January 2019 by James Klassen (talk | contribs)
RoofStar Guarantee Standards are blue-linked
SBS Details

10.3.6.1.jpg

1 WORK INCLUDED

(1) Supporting Deck Overlay
If required by design authority.
(2) Air or Vapour Control Layers
If required by design authority.
(3) Insulation
Mechanically fastened. See available insulation products in the Accepted Materials section of this Manual.
(4) Insulation Overlay
Asphalt adhered or mechanically fastened. Two layers required over heat-sensitive insulation.
(5) Primary Membrane and Membrane Protection
(6) Mastic
As approved by manufacturer.
(7) Base Membrane Flashing
As approved by membrane manufacturer (See (C) below).

2 RELATED WORK BY OTHERS

(A) Acceptable Supporting Deck Structure
(B) Roof Drain Assembly
(C) Lead Flashing
Minimum 15 kg / m² (3 lb / ft²) weight lead sheet; flange extending minimum 25 mm (1") into bowl to 150 mm (6") beyond perimeter of drain; embed in mastic (6) and prime top surface where required by manufacturer or minimum 1 m x 1 m (39" x 39") 3 mm thick modified bituminous base sheet; to be supplied by trade supplying roof drain. For optional installation methods, see 11.3.2.2 Cast-iron Roof Drains.

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.

  • Leader size is determined by using the calculation found in the BC Building Code at Appendix P.7.4.10 and Section 7.4.10.11 (Section 7.4.10.10 for gutters)(current edition) in conjunction with the 15-minute rainfall value from the National Building Code, Appendix C.


Back to RoofStar Guarantee Standards for SBS Modified Bitumen Roof Assemblies

Back to SBS Modified Bitumen Construction Details

Back to Construction Details