Difference between revisions of "SBS Parapet (Typical)"

Latest revision as of 21:01, 1 November 2022

Division D - Construction Details

SBS | Parapet (Typical) ( Article 10.3.2.3.; Article 10.3.4.1.)

Notice to Reader
Images used in a Construction Detail are representative and not prescriptive, and are not necessarily drawn to scale. They are intended to support the related Standard (Ref. Division A, Article 2.2.1.2.). The reader may link to the related Article in the detail title, or link to the Standard as it relates to a specific element in the detail. All hyperlinks are displayed blue text.

SBS Details

Use arrows to scroll through related images (A1, A1, B, and C). Click any image to expand.

Drawing A1
Drawing A2
Drawings B and C

1 WORK INCLUDED

(1) 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 only if allowed in writing by the manufacturer. Refer to the Standard for specific requirements.

Note the minimum height requirement for parapets (127 mm (5”)), illustrated in Drawing (A).

(2) 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) 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) Securement cleat: Ref. Drawing (A).
(5) 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.

NOTE: See the Standard for additional requirements.

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@@ Line 6: / Line 6: @@
 <big><big>Division D - Construction Details</big></big>
 <hr>
-<big><big><big><big><big>SBS | Parapet (Typical) ([[SBS_Roof_Systems_Standard#10.3.4.1._Parapets | Article 10.3.4.1.]])</big></big></big></big></big>
+<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>
 {{Template:Construction Details Header}}
 <div class="panel panel-success">
 <div class="panel-heading"><big>'''SBS Details'''</big></div>
 <div class="panel-body">
-<div class="col-md-6">
+<div class="col-md-7">
 <div style="text-align:center; vertical-align:center">
-[[File:10.3.1.1.jpg|class=img-responsive | link=http://rpm.rcabc.org/images/d/dd/10.3.1.1.jpg]]
+<big>Use arrows to scroll through related images (A1, A1, B, and C).  Click any image to expand.</big>
 </div>
+<gallery mode="slideshow" showthumbnails>
+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
+</gallery>
-::Click below for a printable version of this page.
-<div style="width:150px; text-align: left;">
+</div><!-- COL-MD-7 -->
-:[[File:Pdf.png|100 px|link=http://rpm.rcabc.org/images/8/83/D1.7.2-1_Print_Sheet.pdf|'''Print Sheet''']]
-</div>
-</div><!-- COL-MD-6 -->
-<div class="col-md-6">
+<div class="col-md-5">
 === WORK INCLUDED ===
-;(1) [[SBS Roof Systems Standard#PART_2|'''Supporting Deck Overlay''']]:
+;(1) [[SBS Roof Systems Standard#PART_10|'''Base sheet membrane flashing''']]:
-:If required by design authority.
+: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.
-;(2) [[SBS Roof Systems Standard#PART_6|'''Air or Vapour Control Layers''']]:
-:If required by design authority.
+: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.
-;(3) [[SBS Roof Systems Standard#PART_7|'''Insulation''']]:
-:See list of '''[[Section:C. Accepted Materials|Accepted Materials]]'''.
-;(4) [[SBS Roof Systems Standard#PART_8|'''Insulation Overlay''']]:
-:As required.
-;(5) [[SBS Roof Systems Standard#PART_9|'''Primary Membrane and Membrane Protection''']]:
-;(6) [[SBS Roof Systems Standard#PART_10|'''Membrane Flashing''']]:
-:Mechanically fasten to outside face of parapet blocking (D). At least one ply must extend over outside edge.
-;(7) [[SBS Roof Systems Standard#PART_13|'''Metal Base Flashing''']]:
-:Optional on flexible membrane systems. Required on assemblies using gravel ballast filter mats.
-;(8) [[SBS Roof Systems Standard#PART_13|'''Metal Cap Flashing''']]:
-:Flashings 1 and 2 may be one piece.  Fasten with continuous concealed clip-type fasteners <b>or</b> cladding screws evenly spaced between seams.
-<hr>
+: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.
-=== RELATED WORK BY OTHERS ===
+: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.
-;(A) [[SBS Roof Systems Standard#PART_2|'''Acceptable Supporting Steel Deck Structure''']]
+</div><!-- COL-5-MD -->
-;(B) [[SBS Roof Systems Standard#PART_6|'''Air/Vapour Seal''']]
-;(C) [[SBS Roof Systems Standard#PART_2|'''Acceptable Wall Surface''']]
-;(D) '''Wood Blocking'''
-;(E) [[SBS Roof Systems Standard#PART_10|'''Sloped Wood Blocking''']]
-:Required over 100 mm (4") parapet width.
-</div><!-- COL-6-MD -->
 </div><!-- PANEL BODY -->
 </div><!-- PANEL -->

Difference between revisions of "SBS Parapet (Typical)"

Difference between revisions of "SBS Parapet (Typical)"

Latest revision as of 21:01, 1 November 2022

1 WORK INCLUDED

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