[CCMC evaluation requirements] CGSB 37-GP-56M-1985, Type 1a, Class A, Grade 2

From: National Research Council Canada

This document provides a summary of the minimum requirements imposed by the Canadian Construction Materials Centre (CCMC) for all evaluations based on the below criteria document. Additional requirements may be imposed by the CCMC when necessary for a particular evaluation, and are detailed in the individual evaluation.

Criteria document

Number

CGSB 37-GP-56M-1985, Type 1a, Class A, Grade 2

Title

Membrane, Modified, Bituminous, Prefabricated, and Reinforced for Roofing

Document

Standard

Publisher

Canadian General Standards Board

Scope

These evaluations apply to a single layer of multi-ply, prefabricated, modified bituminous and reinforced membrane for roofing. The membrane can be fully adhered, partially attached, or loose-laid. The proponent has demonstrated that the product meets the requirements of CGSB 37-GP-56M-1985 (including Amendment No. 2, dated December 1985).

The standard classifies the membranes into two types, three classes and two grades of products:

Type 1 for exposed roofing application:
1. fully adhered
2. partially attached

Type 2 for covered roofing application:
1. fully adhered
2. partially attached
3. loose laid

Class A - granule surfaced;
Class B - metallic surfaced; and
Class C - plain surfaced.

Grade 1 - standard service; and
Grade 2 - heavy duty service.

The following evaluation requirements are for a Type 1a, Class A, Grade 2 product

Material requirements

The evaluation holder must demonstrate that the product meets the following requirements (additional requirements may be imposed by the CCMC when necessary, and are detailed in the individual evaluation):

Material requirements
Property		Unit	Requirement
Breaking strength ^{Footnote (1)}		N	≥ 785
Ultimate elongation (at break) ^{Footnote (1)}		%	≥ 8
Load strain product		–	≥ 14 700
Water resistance	water absorption	g	≤ 1.0
Water resistance	dimensional change ^{Footnote (1)}	%	shall not be greater than ± 1%
Low temperature flexibility at –30°C		–	Pass the watertightness test
Water vapour transmission		g/m²	≤ 1.0
Dynamic impact (puncturing) at 4.9 J		–	Pass the watertightness test
Static puncturing		–	Pass the watertightness test
Lap joint strength ^{Footnote (2)}	after 5 days of conditioning	–	Pass the breaking strength test and then the watertightness test
	after immersion in water at 50°C for 5 days	–	Pass the breaking strength test and then the watertightness test
	after immersion in water at 50°C for 5 days followed by 5 freeze-thaw cycles	–	Pass the breaking strength test and then the watertightness test
Granule embedment - loss in mass		g	≤ 2.0
Accelerated weathering	cracking or blistering	–	No evidence of cracking or blistering
	breaking strength	%	≥ 90 of the original value
	elongation at break	%	≥ 90 of the original value
Crack bridging capability (500 cycles at –30°C)		–	No evidence of cracking or splitting or loss of adhesion

Additional information

If stated in the Listing, the proponent has provided information related to:

Fire classification of roof covering

The membrane was tested in accordance with CAN/ULC-S107-10, “Standard Methods of Fire Tests of Roof Coverings.”
Fire-resistance rating

The membrane used in a roofing assembly was tested in accordance with CAN/ULC-S101-14, “Standard Method of Fire Endurance Test of Building Construction and Materials.”
Wind uplift resistance of membrane-roofing assemblies

The membrane used in a roofing assembly tested in accordance with CAN/CSA-A123.21-10, “Dynamic Wind Uplift Resistance of Membrane-Roofing Systems.”

© Canadian General Standards Board. This standard is withdrawn by CGSB due to limited use and support for their revision. Therefore, the information contained therein may no longer represent the most current, reliable, and/or available information on these subjects. CGSB hereby disclaims any and all claims, representation or warranty.

Installation requirements

The CCMC requires that evaluation holders provide instructions for the installation of the product(s) that:

do not contravene the National Building Code of Canada, or any provincial or territorial building codes; and
meet the requirements of CCMC minimum documentation requirements.

Manufacturing requirements

The CCMC requires that evaluation holders, at a minimum, demonstrate that the associated production process:

is operated under a documented quality system; and
meets the minimum requirements of the CCMC minimum documentation requirements.

Labelling requirements

The CCMC requires that evaluation holders ensure that product labels:

reference the associated CCMC number or mark; and
meet the requirements of CCMC minimum documentation requirements.

Additionally, the bundle, roll or package shall be suitably marked with the following information:

the manufacturer; and
the product and quantities.

Classification information

Products falling within the scope of this document are commonly classified by:

MasterFormat®

07 50 00 Membrane Roofing
07 52 00 Modified Bituminous Membrane Roofing

Published CCMC evaluations

The following products have been evaluated to these requirements by the CCMC:

CCMC number:	Manufacturer:	Product names:
13625-L	Holcim Solutions and Products Canada	Elevate BASEGARD SA Base Sheet, Elevate SBS Base, Elevate SBS Glass Torch Base, Elevate SBS Glass Torch Base 1.5, Elevate SBS PolyBase, Elevate SBS Poly Torch Base, Elevate SBS Premium Base, Elevate SBS Premium Poly Base, Elevate SBS Smooth, Elevate SBS Cap, Elevate SBS FR Cap, Elevate SBS FR Torch, Elevate SBS Torch, Elevate SBS Glass, Elevate SBS Glass FR, Elevate SBS Glass FR Torch, Elevate SBS Premium, Elevate SBS Premium FR, Elevate SBS Premium FR Torch, Elevate SBS Premium Torch

Code references

National Building Code of Canada 2015

Code references	Code provision
Table 5.9.1.1.	Standards Applicable to Environmental Separators and Assemblies Exposed to the Exterior
Table 9.26.2.1.-B.	+++ Roofing materials

Language selection

Search