Roof Membranes - Revision history

James Klassen: /* MODIFIED BITUMEN MEMBRANES IN HOT MOPPED ASPHALT */

2021-09-09T16:01:55Z

‎MODIFIED BITUMEN MEMBRANES IN HOT MOPPED ASPHALT

James Klassen at 15:46, 9 September 2021

2021-09-09T15:46:14Z

James Klassen at 21:18, 3 September 2021

2021-09-03T21:18:21Z

James Klassen at 21:09, 3 September 2021

2021-09-03T21:09:30Z

James Klassen: /* EPDM (ETHYLENE PROPYLENE DIENE MONOMER) */

2021-08-30T20:38:48Z

‎EPDM (ETHYLENE PROPYLENE DIENE MONOMER)

James Klassen: /* PVC (Polyvinyl Chloride) */

2021-08-30T20:38:31Z

‎PVC (Polyvinyl Chloride)

James Klassen: Created page with "{{Template:RPM Info}}
TOC

==EP..."

2021-08-30T20:38:17Z

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 # The wrinkles or ridges are usually considered an aesthetic problem only, but may occasionally result in fishmouthing and intermittent bonding of the cap sheet.  Both of these deficiencies affect the performance of the membrane.
 # RGC <b>recommends</b> the use of <b>torch applied</b> thermofusible cap sheets in 2-ply modified bitumen systems <b>in all cases</b>, but particularly if roofing must be carried out in cool or cold weather.  Appropriate safety precautions regarding torching must be addressed.
-# Occasionally some mopped systems, particularly with heavy cap sheets, have exhibited a propensity for membrane slippage, frequently on insulated systems where there is a combination of slope, heavy inter-ply mopping and lack of mechanical fastening (back nailing) of sheets.  (See [http://{{SERVERNAME}}/index.php?title=RoofStar_Guarantee_Standards_for_SBS_Roof_Systems#SBSINSULFASTEN '''SBS Roof Systems - 6.3.3 Mechanical Fastening'''] for mechanical fastening requirements and slope limitations; see similar requirements for '''EPDM''' and '''TPO/PVC Roof Systems''').
+# Occasionally some mopped systems, particularly with heavy cap sheets, have exhibited a propensity for membrane slippage, frequently on insulated systems where there is a combination of slope, heavy inter-ply mopping and lack of mechanical fastening (back nailing) of sheets.  (See Part 3 in the [[SBS_Roof_Systems_Standard | '''Standard for SBS-modified Bitumen Membrane Systems''']] for mechanical fastening requirements and slope limitations; see similar requirements for '''EPDM''', '''TPO''' and '''PVC''' roof systems).
 # It is also common for <b>mopped</b> systems to exhibit some asphalt bleed-out at the seams.  Minimal or reasonable bleed-out is to be expected and is an aesthetic problem which may be minimized by the embedment of matching granules.  Bleed-out which oxidizes and alligators with time does not normally affect the waterproofing efficiency of the roof.

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 <big><big><big><big><big>Roof Membranes</big></big></big></big></big>
 ==EPDM==
 ===General===

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 PVC membranes should be applied in conformance with CGSB 37-GP-55M 1979, &#8220;Application of Sheet Applied Flexible Polyvinyl Chloride Roof Membrane&#8221; and the membrane manufacturer&#8217;s printed instructions.
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+<big><big><big><big><big>Roof Membranes</big></big></big></big></big>
 ==EPDM==
 ===General===

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 +CPE's may be formulated to be used as either a cured or uncured membrane.
-=== <u>EPDM (ETHYLENE PROPYLENE DIENE MONOMER)</u> ===
+===EPDM (ETHYLENE PROPYLENE DIENE MONOMER)===
 EPDM is a thermoset, synthetic rubber membrane formulated from ethylene, propylene, and a small amount of diene monomer. Although most commonly available as a cured sheet, EPDM can be formulated as an uncured membrane for specific purposes (i.e., flashings).
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 ==PVC==
 ===General===

← Older revision		Revision as of 20:38, 30 August 2021
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	PVC membranes should be applied in conformance with CGSB 37-GP-55M 1979, “Application of Sheet Applied Flexible Polyvinyl Chloride Roof Membrane” and the membrane manufacturer’s printed instructions.		PVC membranes should be applied in conformance with CGSB 37-GP-55M 1979, “Application of Sheet Applied Flexible Polyvinyl Chloride Roof Membrane” and the membrane manufacturer’s printed instructions.
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	==SBS==		==SBS==