Difference between revisions of "Draft CD 2"

Latest revision as of 21:58, 27 October 2025

Division D - Construction Details

EPDM | Metal Edge Termination ( Article 10.3.4.2.)

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.

EPDM Details

Drawing NTS

1 WORK INCLUDED

(1) Suitable field substrate: May be the roof deck or deck overlay (if an uninsulated system), or insulation and an overlay (if conventionally insulated).
(2) Primer or adhesive: For self-adhered or adhered membranes, as required by the manufacturer.
(3) Field membrane: Carried continuously over the outside edge at least 50.8 mm (2”) downward, or 50.8 mm past any cold joint.
(4) Sealant: Applied on membrane, beneath metal edge flashing.
(4) Sealant or mastic: Applied on membrane, beneath metal edge flashing.
(5) Metal edge flashing (flush with roof surface):: Fasteners spaced no more than 203.2 mm (8”) on the top face in two offsetting rows.; A hemmed drip edge (shown) is required (Refer to Article 13.2.2.1. for fabrication requirements).
(7) Edge sealant

2 RELATED WORK BY OTHERS

(A) Structural Roof Deck: Generic and representative only.
(B) Roof edge substrate: Wood blocking, required for conventionally insulated roofs.
(C) Wall assembly: Generic and representative only.

NOTE: See the EPDM Roof Systems Standard for additional requirements.

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-<big><big><big><big><big>EPDM | Membrane Termination A (Wall) ([[EPDM_Roof_Systems_Standard#10.3.2.3._General_Application_Requirements_for_Perimeters_and_Walls | Article 10.3.2.3.]])</big></big></big></big></big>
+<big><big><big><big><big>EPDM | Metal Edge Termination ([[EPDM_Roof_Systems_Standard#10.3.4.2._Low_Profile_Edge | Article 10.3.4.2.]])</big></big></big></big></big>
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-[[File:10.3.2.3.-EPDM-A.png |class=img-responsive | link=https://rpm.rcabc.org/images/5/53/10.3.2.3.-EPDM-A.png]]
+[[File:10.3.2.3.-EPDM-B.png|class=img-responsive | link=https://rpm.rcabc.org/images/c/c6/10.3.2.3.-EPDM-B.png]]
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 === WORK INCLUDED ===
-;(1) [[EPDM Roof Systems Standard#PART_6|<big>Air/Vapour Control Layers</big>]]:
+;(1) <big>Suitable field substrate</big>:
-:As specified by the ''Design Authority'' and installed to provide continuity for optimal control.
+:May be the [[EPDM Roof Systems Standard#PART_2| roof ''deck'']] or [[SBS Roof Systems Standard#PART_5 |''deck'' overlay]] (if an uninsulated system), or [[SBS Roof Systems Standard#PART_8| insulation and an overlay]] (if ''conventionally insulated'').
-;(2) [[EPDM Roof Systems Standard#PART_7|<big>Insulation</big>]]:
+;(2) <big>Primer or adhesive</big>:
-:Installed in keeping with Section 7.3.  Multiple layering illustrated; layers must be offset and staggered at least 304.8 mm (12”) in each direction.
+:For self-adhered or adhered membranes, as required by the ''manufacturer''.
-;(3) [[EPDM Roof Systems Standard#PART_8|<big>Insulation Overlay Panel</big>]]:
+;(3) [[EPDM Roof Systems Standard#PART_9|<big>Field membrane</big>]]:
-:Required for fully adhered membrane systems or when overburden is specified.  Panels must be offset and staggered from underlying insulation panels.
+:Carried continuously over the outside edge at least 50.8 mm (2”) downward, or 50.8 mm past any cold joint.
-;(4) [[EPDM Roof Systems Standard#PART_9|<big>Field Membrane</big>]]:
+;(4) [[EPDM Roof Systems Standard#PART_9|<big>Sealant</big>]]:
-:See Table 9.2. for permissible application methods and corresponding membrane properties.  Membrane must be installed according to the requirements in Section 9.3.
+:Applied on membrane, beneath metal edge flashing.
-;(5) [[EPDM Roof Systems Standard#PART_10|<big>Edge Securement</big>]]:
+;(4) <big>Sealant or mastic</big>:
-:Proprietary to the membrane manufacturer.  Edge securement is required, irrespective of how the membrane is applied (i.e., adhered, self-adhered, mechanically fastened).
+:Applied on membrane, beneath metal edge flashing.
-;(6) [[EPDM Roof Systems Standard#PART_10|<big>Mechanical Fastening</big>]]:
+;(5) <big>[[EPDM Roof Systems Standard#PART_13| Metal edge flashing</big>]] (flush with roof surface):
-:Edge securement must be anchored to the roof structure to prevent membrane movement.
+:Fasteners spaced no more than 203.2 mm (8”) on the top face in two offsetting rows.
-;(7) [[EPDM Roof Systems Standard#PART_10|<big>Primer or Adhesive</big>]]:
+:A hemmed drip edge (shown) is required (Refer to Article 13.2.2.1. for fabrication requirements).
-:Proprietary to the membrane manufacturer.  Primer may be required for self-adhered membranes; adhesive is required for all other applications.  All membranes applied to the vertical substrate must be fully adhered.
+;(7) [[EPDM Roof Systems Standard#PART_10|<big>Edge sealant</big>]]:
-;(8) [[EPDM Roof Systems Standard#PART_10|<big>Membrane Flashing</big>]]:
-:May be run continuously up the vertical substrate from the field or installed as separate flashing (see membrane manufacturer requirements).  Membrane shall be carried up the vertical substrate at least 203.2 mm (8”) above the ''finished roof system surface'', plus at least 76.2 mm (3”) for wall control layer overlap. In regions where heavy snow accumulation is possible, or to accommodate future roof membrane replacement, membrane should be carried at least 304.8 mm (12”) up the vertical substrate.
-;(9) [[EPDM Roof Systems Standard#PART_10|<big>Rigid Support for Through-wall Flashing (optional)</big>]]:
-:Where the ''wall'' is insulated on the exterior side of the structure, ''continuity'' of air and vapour controls must be protected from future damage during roof replacement.  This can be done by securing a suitable membrane receiver panel against the insulation.  The panel must be permanently affixed to the structure through the insulation.  During replacement of the roof membrane, membrane flashing may be removed from the receiver panel without disturbing the insulation and control layers.  In this way, material waste is also reduced.
-:Where the membrane may not easily separate from its receiver during roof replacement, a second panel (not illustrated) can be screw-fastened to the first.  During replacement, both the membrane and the secondary panel may be removed together, simplifying membrane replacement.
-;(10) [[EPDM Roof Systems Standard#PART_10|<big>Membrane Flashing Substrate</big>]]:
-:''Continuity'' of the water-resistive barrier means it must pass through the insulation assembly installed on the exterior side of the wall structure.  To do that, a membrane flashing passes through the insulation where the ''roof system'' terminates.  Blocking or another suitable support (i.e., hat track) is necessary to support the membrane and its linear metal flashing carrier.  Wood blocking illustrated.
-;(10) [[EPDM Roof Systems Standard#PART_10|<big>Through-wall Flashing</big>]]:
-:A self-adhered membrane is used to transition from the ''wall'' to the ''roofing assembly'', providing a continuous drainage path for water. Secure the ''linear metal flashing'' to the support underneath (see Item 9 or 10 above).
-:Note that the water resistive barrier membrane from the ''wall'' (installed by others – see Related Work below) overlaps the through-wall flashing (installed by the ''Contractor'') and is supported by a metal flashing with drip edge, to direct water from the wall to the roof surface.
 === RELATED WORK BY OTHERS ===
-;(A) [[EPDM Roof Systems Standard#PART_2|<big>Acceptable Deck</big>]]
+;(A) [[EPDM Roof Systems Standard#PART_2|<big>Structural Roof Deck</big>]]
-:Illustrated deck is representative.  See Sub-section 2.1.5. for acceptable ''deck'' types and conditions.
+:Generic and representative only.
-;(B) [[EPDM Roof Systems Standard#PART_2|<big>Wall Structure</big>]]
+;(B) [[EPDM Roof Systems Standard#PART_10|<big>Roof edge substrate</big>]]
-:Illustrated wall is representative.  Wall control layers (i.e., water resistive barrier) must overlap ''roofing system'' to achieve ''continuity''.  See Sub-section 2.1.7. for wall conditions.
+:Wood blocking, required for conventionally insulated roofs.
-;(C) <big>Wall System Finish</big>
+;(C) <big>Wall assembly</big>
-:Illustrated system is representative and shows water-resistive barrier overlapping roof membrane (See above, Item 8).
+:Generic and representative only.
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-{{Tempate:RPM Page Footer with Copyright and Current Date}}
+{{Template:RPM Page Footer with Copyright and Current Date}}

Difference between revisions of "Draft CD 2"

Difference between revisions of "Draft CD 2"

Latest revision as of 21:58, 27 October 2025

1 WORK INCLUDED

2 RELATED WORK BY OTHERS

3 Accept Terms Of Use