[CCMC evaluation requirements] CGSB 37-GP-56M-1985, Type 1a, Class A, Grade 2
From: National Research Council Canada
This document provides the material, installation, manufacturing, and labelling requirements imposed by the Canadian Construction Materials Centre (CCMC) for all evaluations based on the following:
| 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:
- fully adhered
- partially attached
- Type 2 for covered roofing application:
- fully adhered
- partially attached
- 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:
| 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 |
| 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 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 name(s): |
|---|---|---|
| 13263-L | Firestone Building Products Canada | SBS Cap, SBS FR Cap, SBS Premium, SBS Premium FR, SBS PolyBase |
Code reference
This standard is referenced in the following codes:
National Building Code of Canada 2015
| Code reference | 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 |
