Template:ROOF PENETRATIONS and DRAINS (SBS) - Revision history

James Klassen at 22:58, 9 November 2018

2018-11-09T22:58:23Z

James Klassen: /* Gum Pans (Sealant Pockets) */

2017-11-29T18:10:01Z

‎Gum Pans (Sealant Pockets)

James Klassen: /* {{hilite | Overflows || 2018-January-25 }} */

2017-10-18T22:32:32Z

‎{{hilite | Overflows || 2018-January-25 }}

James Klassen: /* {{hilite | Guardrails || 2017-April-22 }} */

2017-10-18T22:31:18Z

‎{{hilite | Guardrails || 2017-April-22 }}

James Klassen: /* Liquid Membranes */

2017-10-18T21:31:36Z

‎Liquid Membranes

James Klassen: /* Liquid Membranes */

2017-10-18T21:30:21Z

‎Liquid Membranes

James Klassen: /* Strip-in Type Vents */

2017-09-08T14:48:33Z

‎Strip-in Type Vents

James Klassen: /* Strip-in Type Vents */

2017-09-08T14:39:27Z

‎Strip-in Type Vents

James Klassen: /* {{hilite | Flange-type Roof Drains || 2018-January-25 }} */

2017-03-30T15:49:56Z

‎{{hilite | Flange-type Roof Drains || 2018-January-25 }}

James Klassen: /* Roof Drains and Scuppers */

2017-01-26T16:31:20Z

‎Roof Drains and Scuppers

@@ Line 19: / Line 19: @@
 ===Liquid Membranes===
 Refer above to [[RoofStar Guarantee Standards for SBS Modified Bitumen Roof Assemblies#SBSLIQUID|'''11.3.2 Liquid Membranes''']] for '''''RoofStar Guarantee Standards''''' and Guiding Principles governing the application of '''reinforced''' and '''non-reinforced''' liquid membrane flashing.
 === Strip-in Flashings ===
@@ Line 46: / Line 45: @@
 {{hilite | For reference, see Construction Detail [[SBS Details:D1.7.9-4 Miscellaneous Penetrations (Guardrails)| '''D1.7.9-4 Miscellaneous Penetrations (Guardrails)''']] || 2017-April-22 }}
 === Roof Drains and Scuppers ===
@@ Line 99: / Line 97: @@
 Where no {{hilite | overflows || 2018-January-25 }} are specified, the {{hilite | building || 2018-January-25 }} structure must be designed to carry the total load of water collected {{hilite | on the roof || 2018-January-25 }}, in the event of the failure of roof drains (see BC Building Code, latest edition). {{hilite | The '''''RoofStar Guarantee Program''''' || 2018-January-25 }} accepts no responsibility for roof failure where {{hilite | overflows || 2018-January-25 }} are not specified or installed.

@@ Line 15: / Line 15: @@
 With the exception of one on-site formed double standing seam corner joint and adjoining lapped flange joint, all flange corners shall be closed and soldered.  <span class="principles">Use only membrane manufacturer’s approved proprietary urethane based structural sealants to fill gum pans or pitch pockets.</span>
-<span class="principles">Install a back-up storm collar whenever practical</span> (see detail Section 10.3. - new reference needed). <span class="recommended">This detail should be avoided; only use gum pans or pitch pockets as a last resort when other methods are impractical.</span>
+<span class="principles">Install a back-up storm collar whenever practical</span>. <span class="recommended">This detail should be avoided; only use gum pans or pitch pockets as a last resort when other methods are impractical.</span>
 ===Liquid Membranes===

@@ Line 94: / Line 94: @@
 * {{hilite | in locations where their discharge of storm water will be visible. || 2018-January-25 }}
-{{hilite | Overflows || 2018-January-25 }} are required when low doorway or {{hilite | low || 2018-January-25 }} window details are used (see [[SBS Details:D1.7.31 Water & Drainage (Open Wall Scupper)|'''D1.7.31 Water & Drainage (Open Wall Scupper)''']] and [[SBS Details:D1.7.32 Water & Drainage (Through-wall Scupper)|'''D1.7.32 Water & Drainage (Through-wall Scupper''')]]).  {{hilite | In these applications, the overflow must be installed at least 1” lower than the elevation of the door or window sill. || 2018-January-25 }}
+{{hilite | Overflows || 2018-January-25 }} are required when low doorway or {{hilite | low || 2018-January-25 }} window details are used (see [[SBS Details:D1.7.8-4 Water & Drainage (Open Wall Scupper)|'''D1.7.8-4 Water & Drainage (Open Wall Scupper)''']] and [[SBS Details:D1.7.8-5 Water & Drainage (Through-wall Scupper)|'''D1.7.8-5 Water & Drainage (Through-wall Scupper''')]]).  {{hilite | In these applications, the overflow must be installed at least 1” lower than the elevation of the door or window sill. || 2018-January-25 }}
 {{hilite | Overflows || 2018-January-25 }} shall be installed according to {{hilite | the prevailing municipal building code and || 2018-January-25 }} the British Columbia Building Code (latest edition).

@@ Line 45: / Line 45: @@
 {{hilite | Guardrails shall not direct water into a roof system by means of weep holes or the method of fastening, and mounts and flashings shall be installed at least 87.7 mm (3 ½”) above the roof surface. || 2017-April-22 }}
-{{hilite | For reference, see Construction Detail [[SBS Details:D1.7.36 Miscellaneous Penetrations (Guardrails)| '''D1.7.36 Miscellaneous Penetrations (Guardrails)''']] || 2017-April-22 }}
+{{hilite | For reference, see Construction Detail [[SBS Details:D1.7.9-4 Miscellaneous Penetrations (Guardrails)| '''D1.7.9-4 Miscellaneous Penetrations (Guardrails)''']] || 2017-April-22 }}
 <div id=SBSRD></div>

@@ Line 18: / Line 18: @@
 ===Liquid Membranes===
-Refer above to [[RoofStar Guarantee Standards for SBS Roof Systems#SBSLIQUID|'''11.3.2 Liquid Membranes''']] for '''''RoofStar Guarantee Standards''''' and Guiding Principles governing the application of '''reinforced''' and '''non-reinforced''' liquid membrane flashing.
+Refer above to [[RoofStar Guarantee Standards for SBS Modified Bitumen Roof Assemblies#SBSLIQUID|'''11.3.2 Liquid Membranes''']] for '''''RoofStar Guarantee Standards''''' and Guiding Principles governing the application of '''reinforced''' and '''non-reinforced''' liquid membrane flashing.
 <div id=SBSSTRIPFLASH></div>

@@ Line 23: / Line 23: @@
 === Strip-in Flashings ===
 ====Strip-in Type Vents ====
-* Strip-in type roof penetration flashings (lead, aluminium, stainless steel, copper, etc.) must be properly sized to fit pipe penetrations or alternatively, when pipes are irregular in size spray foam urethane insulation may be used to fill gaps between pipes and flashings. Strip-in type roof penetration flashings are only permitted for use with single pipe roof penetrations, must incorporate properly fitted settlement caps, and be a minimum height of 200 mm (8") above finished roof surfaces. Pipes that are higher than standard flashings must have site formed non-bituminous flexible roof membrane storm collars sealed with compatible sealants and stainless steel clamps. {{hilite | Where shrink-wrapped terminations are employed, they shall be fitted with a stainless steel mechanical compression strap, and sealant shall be applied between shrink-wrap and penetration. || 2017-April-22 }}
+* Strip-in type roof penetration flashings (lead, aluminium, stainless steel, copper, etc.) must be properly sized to fit pipe penetrations or alternatively, when pipes are irregular in size, spray foam urethane insulation may be used to fill gaps between pipes and flashings. Strip-in type roof penetration flashings are only permitted for use with single pipe roof penetrations, must incorporate properly fitted settlement caps, and be a minimum height of 200 mm (8") above finished roof surfaces. Pipes that are higher than standard flashings must have site formed non-bituminous flexible roof membrane storm collars sealed with compatible sealants and stainless steel clamps. {{hilite | Where shrink-wrapped terminations are employed, they shall be fitted with a stainless steel mechanical compression strap, and sealant shall be applied between shrink-wrap and penetration. || 2017-April-22 }}
 * The use of lead jack flashings is not permitted for use on torch applied membrane roofs.
 * Strip-in type flashings for cables and multiple roof penetrations including grouped pipes and or cables must be purpose made roof flashings. All purpose-made multiple penetration flashings must provide a positive weather seal by use of manufacturer’s proprietary rubber based friction seals, mechanical clamps or gooseneck type design, and be a minimum height of 200 mm (8") above finished roof surfaces. Alternatively, roof curbs with metal hoods may be used to seal cables and multiple roof penetrations.

@@ Line 25: / Line 25: @@
 * Strip-in type roof penetration flashings (lead, aluminium, stainless steel, copper, etc.) must be properly sized to fit pipe penetrations or alternatively, when pipes are irregular in size spray foam urethane insulation may be used to fill gaps between pipes and flashings. Strip-in type roof penetration flashings are only permitted for use with single pipe roof penetrations, must incorporate properly fitted settlement caps, and be a minimum height of 200 mm (8") above finished roof surfaces. Pipes that are higher than standard flashings must have site formed non-bituminous flexible roof membrane storm collars sealed with compatible sealants and stainless steel clamps. {{hilite | Where shrink-wrapped terminations are employed, they shall be fitted with a stainless steel mechanical compression strap, and sealant shall be applied between shrink-wrap and penetration. || 2017-April-22 }}
 * The use of lead jack flashings is not permitted for use on torch applied membrane roofs.
-* Strip-in type flashings for cables and multiple roof penetrations including grouped pipes and or cables must be purpose made roof flashings. All-purpose made multiple penetration flashings must provide a positive weather seal by use of manufacturer’s proprietary rubber based friction seals, mechanical clamps or gooseneck type design, and be a minimum height of 200 mm (8") above finished roof surfaces. Alternatively, roof curbs with metal hoods may be used to seal cables and multiple roof penetrations.
+* Strip-in type flashings for cables and multiple roof penetrations including grouped pipes and or cables must be purpose made roof flashings. All purpose-made multiple penetration flashings must provide a positive weather seal by use of manufacturer’s proprietary rubber based friction seals, mechanical clamps or gooseneck type design, and be a minimum height of 200 mm (8") above finished roof surfaces. Alternatively, roof curbs with metal hoods may be used to seal cables and multiple roof penetrations.
 * Strip-in vents will not be permitted for use in protected or modified protected membrane roofs. Curb mounting for all venting units and equipment except lead or aluminium jacks is mandatory. Curbs are to be supplied and installed by others. Curbs are to be a minimum 200 mm (8") in height above top of finished surfacing.
 * Strip-in type vents are permitted up to 350 mm x 350 mm (14" x 14"), equal to approximately 0.12 meter squared (196 sq. in.) on exposed or conventionally-placed membrane roofs, provided the vents are not located in or near a valley and are well drained.

← Older revision		Revision as of 15:49, 30 March 2017
Line 74:		Line 74:


−	All flange type roof drains shall be constructed of non-ferrous material {{hilite \| and include a primary drain strainer. \|\| 2018-January-25 }} Flanged copper drains shall be formed from a minimum weight of 16 oz. sheet copper for external (on outside of walls) drains and 24 oz. sheet copper for internal (inside walls or buildings) drains. The minimum gauge for aluminium sheet to be used for roof drains shall be 20 gauge for external use and 12 gauge for internal use. In addition, the trade supplying roof drains must also provide secondary stainless steel debris strainers in addition to primary drain strainers on all roofing systems that utilize gravel ballast and or growing mediums (soil).	+	All flange type roof drains shall be constructed of non-ferrous material {{hilite \| and include a primary drain strainer. \|\| 2018-January-25 }} Flanged copper drains shall be formed from a minimum weight of 16 oz. sheet copper for external (on outside of walls) drains and 24 oz. sheet copper for internal (inside walls or buildings) drains. The minimum gauge for aluminium sheet to be used for roof drains shall be 20 gauge for external use and 12 gauge for internal use.

	{{hilite \| On all roofing systems that utilize gravel ballast and or growing mediums (soil), the trade supplying roof drains must also provide secondary stainless steel debris strainers. \|\| 2018-January-25 }} Only the use of drain manufacturer’s proprietary secondary stainless steel debris strainers is acceptable.		{{hilite \| On all roofing systems that utilize gravel ballast and or growing mediums (soil), the trade supplying roof drains must also provide secondary stainless steel debris strainers. \|\| 2018-January-25 }} Only the use of drain manufacturer’s proprietary secondary stainless steel debris strainers is acceptable.

@@ Line 49: / Line 49: @@
 === Roof Drains and Scuppers ===
 Roof drains and other roof accessories are to be installed as per membrane manufacturer's instructions.
-====Drains====
+===={{hilite | Internal Roof || 2018-January-25 }} Drains====
 All cast-iron roof drains must be flashed as follows:
 :.1 A minimum 14.6 kg / m&sup2; (3 lb / sq ft) lead sheet. The flange must extend a minimum of 150 mm (6") beyond the perimeter of the drain and be embedded in compatible mastic. The lead flange must extend a minimum of 25 mm (1") into the bowl. The trade supplying the roof drain shall supply the lead flashing material.
@@ Line 60: / Line 67: @@
 When cast-iron roof drains are used; a sump receiver and under-deck clamp must be provided and installed by the trade supplying the roof drain. In addition, the trade supplying roof drains must also provide secondary stainless steel debris strainers in addition to primary drain strainers on all roofing systems that utilize gravel ballast and or growing mediums (soil). Only the use of drain manufacturer’s proprietary secondary stainless steel debris strainers is acceptable.
-All flange type roof drains shall be constructed of non-ferrous material. Flanged copper drains shall be formed from a minimum weight of 16 oz. sheet copper for external (on outside of walls) drains and 24 oz. sheet copper for internal (inside walls or buildings) drains. The minimum gauge for aluminium sheet to be used for roof drains shall be 20 gauge for external use and 12 gauge for internal use. In addition, the trade supplying roof drains must also provide secondary stainless steel debris strainers in addition to primary drain strainers on all roofing systems that utilize gravel ballast and or growing mediums (soil). Only the use of drain manufacturer’s proprietary secondary stainless steel debris strainers is acceptable.
+====={{hilite | '''Flange-type Roof Drains''' || 2018-January-25 }}=====
-====Scuppers====
+All {{hilite | scupper drains || 2018-January-25 }} shall be formed with a minimum 37.7 mm (1 ½") lower outside faces than side walls of the water collection boxes and incorporate minimum 12.7 mm (½") drip edges on the lowered outside faces.
-Overflow scuppers shall be installed according to the British Columbia Building Code (latest edition).
+{{hilite | Scupper drains || 2018-January-25 }} shall be installed according to the {{hilite | prevailing municipal building code and || 2018-January-25 }} the British Columbia Building Code (latest edition).
-Overflow scuppers are required when low doorway or window details are used (see [[SBS Details:D1.7.31 Water & Drainage (Open Wall Scupper)|'''D1.7.31 Water & Drainage (Open Wall Scupper)''']] and [[SBS Details:D1.7.32 Water & Drainage (Through-wall Scupper)|'''D1.7.32 Water & Drainage (Through-wall Scupper''')]])
+====={{hilite | '''Overflows''' || 2018-January-25 }}=====
-All roof scuppers shall be formed with a minimum 37.7 mm (1 ½") lower outside faces than side walls of the water collection boxes and incorporate minimum 12.7 mm (½") drip edges on the lowered outside faces.
+{{hilite | Overflows || 2018-January-25 }} are required when low doorway or {{hilite | low || 2018-January-25 }} window details are used (see [[SBS Details:D1.7.31 Water & Drainage (Open Wall Scupper)|'''D1.7.31 Water & Drainage (Open Wall Scupper)''']] and [[SBS Details:D1.7.32 Water & Drainage (Through-wall Scupper)|'''D1.7.32 Water & Drainage (Through-wall Scupper''')]]).  {{hilite | In these applications, the overflow must be installed at least 1” lower than the elevation of the door or window sill. || 2018-January-25 }}
-On all re-roofing projects all drains connected to internal piping shall be connected by mechanical compression type seals only. “O”- rings, mastics and caulking are not acceptable methods to seal roof drains to internal piping.
+{{hilite | Overflows || 2018-January-25 }} shall be installed according to {{hilite | the prevailing municipal building code and || 2018-January-25 }} the British Columbia Building Code (latest edition).
-Where no overflow scuppers are specified, the structure must be designed to carry the total load of water collected in the event of the failure of roof drains (see BC Building Code, latest edition).  The '''''RoofStar Guarantee Program''''' recommends overflow scuppers be installed where perimeter walls exceed 100 mm (4") in height and accepts no responsibility for roof failure where scuppers are not specified or installed.
+Where no {{hilite | overflows || 2018-January-25 }} are specified, the {{hilite | building || 2018-January-25 }} structure must be designed to carry the total load of water collected {{hilite | on the roof || 2018-January-25 }}, in the event of the failure of roof drains (see BC Building Code, latest edition). {{hilite | The '''''RoofStar Guarantee Program''''' || 2018-January-25 }} accepts no responsibility for roof failure where {{hilite | overflows || 2018-January-25 }} are not specified or installed.
 <div id=SBSMETALFLASH></div>