View source for SBS Parapet (Typical)

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<big><big>Division D - Construction Details</big></big>
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<big><big><big><big><big>SBS | Parapet (Typical) ([[SBS_Roof_Systems_Standard#10.3.2.3._General Application Requirements for Perimeters and Walls | Article 10.3.2.3.]]; [[SBS_Roof_Systems_Standard#10.3.4.1._Parapets | Article 10.3.4.1.]])</big></big></big></big></big>
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<div class="panel-heading"><big>'''SBS Details'''</big></div>
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<big>Use arrows to scroll through related images (A1, A1, B, and C).  Click any image to expand.</big>
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Part 10 - SBS Parapet A1.png | Drawing A1
Part 10 - SBS Parapet A2.png | Drawing A2
Part 10 - SBS Parapet B,C.png | Drawings B and C
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=== WORK INCLUDED ===

;(1) [[SBS Roof Systems Standard#PART_10|'''Base sheet membrane flashing''']]: 
:On ''standard parapets'' (609.6 mm (24”) or less in height), install continuous base membrane flashing, from the roof field to outer face of the parapet top.  The machine direction of the membrane shall be oriented vertically.  Carry membrane flashing in one piece over the top and down the exterior face as required in Article 10.3.2.3.

:An alternative method of flashing for may be used (see Drawing (3C)) and is permissible <u>only if allowed in writing by the ''manufacturer''</u>.  Refer to the Standard for specific requirements.

:Note the minimum height requirement for parapets (127 mm (5”)), illustrated in Drawing (A).
;(2) [[SBS Roof Systems Standard#PART_10|'''Cap sheet membrane flashing''']]:
:Installed as required in Part 10 and applied as the second or third of a multi-ply membrane system, providing required coverage above the ''finished roof system surface''.  The three illustrated colours in Drawing (A1) indicate various permissible methods, depending upon the ''manufacturer's'' published requirements:
::'''Option A''': Cap sheet membrane flashing terminated at the top inside edge of the parapet.
::'''Option B''': Cap sheet membrane flashing carried onto parapet top surface at least 50.8 mm (2”).
::'''Option C''': Cap sheet membrane flashing completely covering top surface of parapet, terminated at outside edge.
:Parapet in Drawing (A) illustrates the lowest permissible height (127 mm (5”)).  Note that for parapets with an inside face height up to 203.2 mm (8”), no fewer than two plies of sheet membrane flashing must cover the inside face of the parapet.

:When the parapet height (measured on the inside face) exceeds 203.2 mm (8”) (Ref. Drawings (B) and (C)), no fewer than two plies of sheet membrane flashing shall be carried up at least 203.2 mm above the ''finished roof system surface''.
;(3) [[SBS Roof Systems Standard#PART_13|'''Metal Cap Flashing''']]:
:Designed and installed as required in Part 13 and secured on the outside face with a metal cleat (see Article 13.3.2.1., “General Requirements for Linear Metal Flashings”).  Gasketed screw fasteners shown on the inside face of the flashing.
;(4) [[SBS Roof Systems Standard#PART_13|'''Securement cleat''']]:
:Ref. Drawing (A).
;(5) [[SBS Roof Systems Standard#PART_13|'''Counter-flashing''']]:
:Required if membrane on inside surface of parapet is not protected from UV light (granule-surfaced membrane is considered UV resistant; Ref. Drawing (A1)).  The illustrated flashing underlaps the cap flashing and is secured to the inside face of the parapet with S-locked seams and additional gasketed fasteners; all fasteners must be located at least 88.9 mm (3-1/2”) above the ''finished roof system surface''.  Counter-flashing may be removed for future sheet membrane renewal.
;(6) '''Machine direction''':
:Membrane oriented in the direction of manufacturing.

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'''NOTE''': See the [[SBS Roof Systems Standard | '''Standard''']] for additional requirements.

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