SBS Low Door Opening

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SBS Low Door Opening

RoofStar Guarantee Standards are blue-linked
SBS Details



(1) Air/Vapour barrier
Self-adhered membrane, as specified in design. Install following manufacturer’s requirements.
(2) Roof system
Conventionally insulated system shown (refer to the membrane Standard for requirements).
(3) Field Membrane
SBS-modified bituminous system shown (see Part 9 for standards)
(4) Self-adhered membrane (pre-flashing)
Apply over rough sill or sill woodwork. Prime as required.
(5) Metal water-stop flashing
Dimensions as specified in design. Mechanically attach to inside face of door sill. Cut flashing to fit opening width.
(6) Membrane flashing
Base membrane shown. Install to overlap and seal in metal water-stop flashing.
(7) Membrane gussets
Install in corners to seal joints.
(8) Metal base flashing (under door)
Optional; protection for membrane when pavers are installed (shown), or when exposed membrane is vulnerable to damage. Mechanical fasteners must be at least 87.5 mm (3-1/2”) above the drainage plane.
(9) Membrane flashing
Applicable for exterior-insulated walls. Seals roof membrane flashing to air/vapour barrier on wall and provides sufficient exposure for positive union with WRB (by others). Mechanically secure membrane (metal base flashing used for securement in this detail).
(10) Metal base flashing (walls)
Optional; protects membrane flashing from damage, and functions as removable panel to permit access to membrane flashing for future replacement.
(11) Pavers and pedestals
May be installed by others, if specified. See Part 14 for material and application requirements. Must be at least 12 mm (1/2”) away from other pavers, and from membrane flashing or metal base flashing, to permit adequate drainage.


(A) Wall and cladding
Generic and representative only.
(B) WRB (Water Resistant Barrier)
Generic and representative only.
(C) Door and jamb assembly
Generic and representative only.

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.

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