1. Opinion

It is the opinion of the Canadian Construction Materials Centre (CCMC) that "WrapShield®" , when used as a breather-type sheathing membrane in accordance with the conditions and limitations stated in Section 3 of this Report, complies with the National Building Code 2010:

• Clause 1.2.1.1.(1)(b), Division A, as an alternative solution that achieves at least the minimum level of performance required by Division B in the areas defined by the objectives and functional statements attributed to the following applicable acceptable solutions:
  • Article 9.27.3.2 Sheathing Membrane Material Standard

This opinion is based on CCMC's evaluation of the technical evidence in Section 4.1 provided by the Report Holder.

2. Description

The product is a 0.51-mm-thick spun-bonded, nonwoven, polypropylene breathable sheathing membrane. It is orange in colour and is available in rolls 1.5 m wide and 50 m long.

3. Conditions and Limitations

CCMC's compliance opinion in Section 1 is bound by the "WrapShield®" being used in accordance with the conditions and limitations set out below.

• The product must be installed with the printed side facing outward and must be protected from exposure to ultraviolet radiation from the sun within 60 days.
• The product must be installed with a minimum 10 mm air space between the sheathing membrane and the cladding, unless the cladding has been deemed not to require an air space (e.g. deemed by CCMC or deemed by building officials based on past cladding performance).
• When the product us used in applications where a concealed air space exceeds 25 mm in width, the concealed air space must contain proper fire stopping in accordance with Subsection 9.10.16, Fire Blocks, of Division B of the NBC 2010.
• The product must be installed in accordance with Article 9.27.3.3., required Sheathing Membrane and Installation, of Division B of the NBC 2010 and the manufacturer's instructions. If manufacturer's instructions differ then the installation requirements of the NBC 2010 takes precedence.

4. Technical Evidence

CCMC's Technical Guide for "WrapShield®" sets out the nature of the technical evidence required by CCMC to enable it to evaluate a product as an acceptable or alternative solution in compliance with the NBC 2010. The report Holder has submitted test results for CCMC's evaluation. Testing was conducted at independent laboratories recognized by CCMC. The corresponding test results for "WrapShield®" are summarized below.

4.1 NBC 2010 Compliance Data for "WrapShield®" on which CCMC Based its Opinion in Section 1

4.1.1 Material Requirements

4.1.1.1 Test Results for Material Properties

4.1.2 Performance Requirements

4.1.2.1 Test Results for Performance Properties

Notes to Table 4.1.2.1
¹ASTM E96/E 96M-10, "Water Vapour Transmission of Materials," (Desiccant Method). 
²The water ponding test requires that the membrane retain 25.4 mm of water with no passage of water through membrane for two hours. 

This report is issued by the Canadian Construction Materials Centre, a program of the Institute for research in Construction at the Nation Research Council of Canada. The Report must be read in the context of the entire CCMC Registry of Product Evaluations, including, without limitation, the introduction therein which sets out important concerning the interpretation and use of CCMC Evaluation Reports.

Readers must confirm that the Report is current and has not been withdrawn or superseded by a later issue. Please refer to http://www.nrc-cnrc.gc.ca/eng/services/irc/ccmc.html or contact the Canadian Construction Materials Centre, Institute for Research in Construction, National Research Council of Canada, 1200 Montreal Road, Ottawa, K1A 0R6. Telephone (613) 952-0268.

NRC has evaluated the material, product, system or service described herein only for those characteristics stated herein. The information and opinions in this Report are directed to those who have the appropriate degree of experience to use and apply its contents. This Report is provided without representation, warranty, or guarantee of any kind, expressed, or implied, and the National Research Council of Canada (NRC) provides no endorsement for any evaluated material, product, system or service described herein. NRC accepts no responsibility whatsoever arising in any way from any and all use and reliance on the information contained in this Report. NRC is not undertaking to render professional or other services on behalf of any person or entity not to perform any duty owed by any person or entity to another person or entity.