Evaluation Report CCMC 06666-R
Fome-Cor® Board

Table of Contents

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MASTERFORMAT:
06 16 53.01
Evaluation issued:
1984-08-16
Re-evaluated:
2011-12-06
Revised:
Never
Re-evaluation due:
2014-09-30
Re-evaluation in progress
No


1. Opinion

It is the opinion of the Canadian Construction Materials Centre (CCMC) that “Fome-Cor® Board”, when used as a breather-type sheathing membrane under commonly used types of exterior cladding (except stucco) and brick veneer 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
    • Article 9.27.3.3. Required Sheathing Membrane and Installation

This opinion is based on CCMC's evaluation of the technical evidence in Section 4 provided by the Report Holder.

2. Description

The product consists of 6.4-mm-thick extruded polystyrene laminated between two layers of kraft paper. The product is available in widths up to 2438 mm and is fan-folded into various configurations from 610 mm to 1219 mm. One bundle of the product provides a continuous length of up to 128 m.

Figure 1
Figure 1.  Application of the product as a sheathing material
 
Figure 2
Figure 2.  “Fome-Cor® Board” bundle:
  1. various configurations from 610 mm to 1219 mm
 

3. Conditions and Limitations

CCMC's compliance opinion in Section 1 is bound by the “Fome-Cor® Board” being used in accordance with the conditions and limitations set out below.

  • Sheathing Membrane – New Construction

    • 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 after application to the wall.
    • The product must be installed in accordance with Article 9.27.3.3. of Division B of the NBC 2010 and the manufacturer's current instructions.
    • The product must be installed with a minimum 10-mm air space between the sheathing membrane and the cladding.
    • It should be noted that a concealed air space exceeding 25 mm in width must contain proper fire stopping, in accordance with Subsection 9.10.15., Spatial Separation Between Houses, of Division B of the NBC 2010.

  • Re-Siding Underlayment – Retrofit

    • The product may also be used as a re-siding underlayment over existing cladding. Existing exterior walls being re-clad with new siding and a “Fome-Cor® Board” as an underlayment must be retrofitted to meet the requirements of the NBC 2010 for heat transfer, air leakage and condensation control (see Explanatory Information below).
    • When used as a re-siding underlayment the product must be covered with new cladding that meets the requirements of the NBC 2010.  The new cladding must be either securely fastened through the structure directly or attached to the existing siding if adequate rigidity and support are being provided.
    • When the product is used as a re-siding underlayment, it also acts as a sheathing membrane.  Thus, the installation requirements for sheathing membranes outlined above also applies to re-siding underlayment installations.

  • Explanatory Information

    The possibility of moisture accumulation within the wall construction is mainly a function of the physical properties of the additional materials being installed and their impact on the air leakage, vapour diffusion and thermal characteristics of the existing wall.  Consequently, the potential moisture accumulation resulting from the addition of materials is very specific to the existing wall construction being retrofitted.

    The product may be used as re-siding underlayment provided it is properly installed with knowledge of the existing wall configuration and performance.

    The product must be clearly identified with the following information:

    • manufacturer's name and logo;
    • product's brand name; and
    • the phrase “CCMC 06666-R”.

 

4. Technical Evidence

The Report Holder has submitted technical documentation for CCMC’s evaluation. Testing was conducted at laboratories recognized by CCMC. The corresponding technical evidence for this product is summarized below.

4.1 Performance Requirements

Table 4.1.1  Performance properties for the product
PropertiesUnitsRequirementsResults
Tensile strength (original sample) N/mm ≥ 3.5 26.4
Water vapour permeance (original sample) ng/(Pa·s·m2) 170 ≤ WVP ≤ 1400 429
Water ponding (original sample) No unit No leakage No water seepage
Tensile strength after ultraviolet (UV) exposure % ≥ 90% of original 87Footnote 1
Tensile strength after heat aging (of UV-exposed specimens) % ≥ 85% of original 85
Water vapour permeance (of UV-exposed and heat-aged specimens) ng/(Pa·s·m2) 170 ≤ WVP ≤ 2900 447
Water ponding (of UV-exposed and heat-aged specimens) No unit No leakage No water seepage
 
Note to Table 4.1.1:
Footnote 1

The product exhibited greater loss in tensile strength after UV exposure than the prescribed allowable loss. However, the performance was deemed a pass because the slight increase in percent loss in strength was not considered significant when compared to the product’s higher un-aged tensile strength of 26.4 N/mm.

Return to footnote 1 referrer

Report Holder

3A Composites USA, Inc.
3480 Taylorsville Hwy
Statesville, NC 28625
U.S.A.

Telephone:
704-658-3520
Fax:
704-658-3540

Plant(s)

Glasgow, KY, U.S.A.

Disclaimer

This Report is issued by the Canadian Construction Materials Centre, a program of NRC Construction at the National 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 information 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 the CCMC web site, or contact the Canadian Construction Materials Centre, NRC Construction, National Research Council of Canada, 1200 Montreal Road, Ottawa, Ontario, K1A 0R6. Telephone (613) 993-6189. Fax (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 nor to perform any duty owed by any person or entity to another person or entity.