SBS Fire Separation Joint

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SBS Fire Separation Joint

Revision as of 18:07, 7 September 2021 by James Klassen (talk | contribs)

Division D - Construction Details

SBS 10.3.9-1 Roof-Wall Transitions (fire separation joint)

Notice to Reader
Images used in a Construction Detail are representative and not prescriptive. Nor are they necessarily drawn to scale. Rather, they are provided to visually convey the requirements of the Standard they represent. Unless otherwise required by the Standard, dimensions, the selection of materials and their application remains the responsibility of the Design Authority.

The full text of the referenced requirements in the Standard may be read by using the blue hyperlinks
SBS Details


(1) Supporting Deck Overlay
If required by design authority.
(2) Air or Vapour Control Layers
If required by design authority.
(3) Insulation
See available insulation products in the Accepted Materials section of this Manual.
(4) Insulation Overlay
Where required.
(5) Primary Membrane and Membrane Protection
(6) Membrane Flashing
(7) Membrane Counter Flashing
(8) Base Metal Flashing
Mechanically fasten to top of plywood backing. Optional on flexible membrane systems. Required on assemblies using gravel ballast filter mats.
(9) Metal Flashing / Cladding
(10) Secondary Metal Cap Flashing
Joints to be offset from Cap Flashing, OR Water Channeling Clip may be used (See inset in detail D1.7.19 Roof-Wall Transitions (Fire Separation Wall)), OR solder standing seam joints. Do NOT place combustible materials over top of firewall.
(11) Metal Cap Flashing
Standing seam joints required.


(A) Acceptable Supporting Deck Structure
(B) Acceptable Wall Surface
(C) Wood Blocking
(D) Grouted Finish
Sloped surface to promote drainage off cap flashing.

NOTE: See the Standard for additional requirements.

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