[CCMC 12935-R] CCMC Canadian code compliance evaluation

From: National Research Council Canada

In most jurisdictions this document is sufficient evidence for approval by Canadian authorities.

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Code compliance opinion

It is the opinion of the Canadian Construction Materials Centre that FOAMULAR® CodeBord® Air Barrier System (CABS), when used as an air barrier system for exterior walls of buildings in accordance with the conditions and limitations stated in this evaluation, complies with the following Canadian code(s):

National Building Code of Canada 2015

Code provision Solution type
5.1.4.1. Structural and Environmental LoadsAcceptable
5.1.4.2. Resistance to DeteriorationAcceptable
5.2.2. Structural Loads and Design ProceduresAcceptable
5.4.1. Air Barrier SystemsAcceptable
9.25.3.1. Required Barrier to Air LeakageAcceptable
9.25.3.2.(1) Air Barrier System Prpoerties (effective barrier to air infiltration and exfiltration)Acceptable
9.25.3.2.(2) Air Barrier Systems Properties (alternative to 6-mil polyethylene air barrier)Alternative
9.25.3.3. Continuity of the Air Barrier SystemAcceptable
9.27.4.2. ASTM C 920-14 Elastomeric Joint Sealants ...Acceptable

Ontario Building Code 2017

Ruling No. 09-39-237 (12935-R) authorizing the use of this product in Ontario, subject to the terms and conditions contained in the Ruling, was made by the Minister of Municipal Affairs and Housing on 2009-12-30 (revised 2017-03-31) pursuant to s.29 of the Building Code Act, 1992 (see Ruling for terms and conditions). This Ruling is subject to periodic revisions and updates.


The above opinion is based on the evaluation by the CCMC of technical evidence provided by the evaluation holder, and is bound by the stated conditions and limitations. For the benefit of the user, a summary of the technical information which forms the basis of this evaluation has been included.

  Product information

Product description

This report addresses the performance of the product as an air barrier system as specified by Owens Corning. The product consists of the following components and accessories (see Figure 1) providing the following functions:

Plane of airtightness

  • FOAMULAR® CodeBord® extruded polystyrene (XPS), Type 3 (see CCMC 13431-L) as the principal material in the plane of airtightness. Please note that this evaluated air barrier system is achieved without a sealed polyethylene vapour barrier on the interior side of wall assembly.

Continuity

Accessories for continuity include two approaches:

  • For Original CABS:
    • FoamSealR, a foamed polyethylene sealing gasket installed behind all (i.e., vertical and horizontal) FOAMULAR® CodeBord® XPS panel joints, and also at XPS panel termination points around penetrations such as around windows and doors;
  • For Hybrid CABS:
    • FoamSealR, a foamed polyethylene sealing gasket installed behind FOAMULAR® CodeBord® XPS horizontal joints at the perimeter of the uppermost top plate (i.e., top floor) and the bottom of the lowermost floor perimeter (i.e., along header) only, and around windows and doors;
    • CCMC-evaluated Owens Corning (OC) JointSealR® Foam Joint Tape (CCMC 14003-R) to seal horizontal and vertical joints of the XPS panels; and
    • CCMC-evaluated OC FlashSealR® Foam Flashing Tape (CCMC 14003-R) to seal around window and door openings, in lieu of FoamSealR foam gaskets. A combination of specified gasket and tape can also be used as per the manufacturer's details.
  • For both Original and Hybrid CABS:
    • sealant foam that is a one-component, spray-in-place polyurethane evaluated by the CCMC (see CCMC 13074-L) or meeting CAN/ULC-S710.1-05, “Standard for Thermal Insulation – Bead-Applied One Component Polyurethane Air Sealant Foam, Part 1: Material Specification,” and CAN/ULC-S710.2-05, “Standard for Thermal Insulation – Bead-Applied One Component Polyurethane Air Sealant Foam, Part 2: Installation.” The sealant must have qualified for sealing the 2 relevant contact surfaces around penetrations to be sealed, covering vinyl and wood as a minimum (i.e., for sealing wood rough opening and vinyl windows), but preferably also XPS and galvanized metal;
    • 4-mil polyethylene as the designated “vapour barrier” only (i.e., unsealed joints), compliant with Subsection 9.25.4., Vapour Barriers, of Division B of the NBC 2015;
    • 6-mil polyethylene air/vapour barrier conforming to CAN/CGSB-51.34-M86, “Vapour Barrier, Polyethylene Sheet for Use in Building Construction,” installed at ceiling locations and on the interior where specified in the CABS for the continuity of the plane of airtightness; and
    • specified caulking sealants conforming to CAN/CGSB-19.0-M77, “Methods of Testing Putty, Caulking and Sealing Compounds.”

Strength

Specified XPS thickness, stud spacing, cap nails and nailing schedule to provide the strength to resist wind loads in low-rise buildings achieved by fastening the CABS to the supporting structure.

Installation

To be installed by Owens Corning-trained installers following detailed air barrier system fabrication site details.

 
Accessories required for proper installation.
Figure 1. Components and accessories used for the in-field installation of the product (Items 1, 2, 5 and 6 are Owens Corning products)
  1. CodeBord® extruded polystyrene insulating sheathing (4 ft. x 8 ft. or 4 ft. x 9 ft.) with ship lap or butt edges
  2. FoamSealR polyethylene sealing gaskets (3-1/2 in. or 5-1/2 in.)
  3. Single-component foam sealant CCMC-evaluated
  4. 4-mil polyethylene vapour barrier (6-mil air/vapour barrier for ceiling applications)
  5. JointSealR® foam joint tape
  6. FlashSealR® foam flashing tape
  7. Caulking sealant
  8. Nails with plastic or metal washers

Manufacturing plants

This evaluation is valid only for products produced at the following plants:

  • Grande-Île (Valleyfield), Québec, Canada

  Conditions and limitations

The CCMC’s compliance opinion is bound by this product being used in accordance with the conditions and limitations set out below.

  • The 2 CABS systems have demonstrated sufficiently low air permeance in accordance with NBC 2015 for buildings with an indoor environment of 20°C and winter design relative humidity (RH) of 35% or less (see table "Results of testing of air leakage rate of the product after wind loading" below).
  • The Hybrid CABS has demonstrated sufficient strength to resist wind loads and to be used in low-rise buildings in geographical locations:
    • where the wind pressure Q50 ≤ 0.75 kPa (1-in-50 year wind pressure return period found in Appendix C of the NBC 2015), for the 20-mm-thick XPS on studs at 400 mm (16 in.) o.c., for maximum building height of 20 m, and
    • where the wind pressure Q50 ≤ 0.55 kPa, for the 25-mm-thick XPS on studs at 600 mm (24 in.) o.c., for a maximum building height of 12 m.
  • The Original CABS has demonstrated sufficient strength to be used in low-rise buildings in geographical locations:
    • where the wind pressure Q50 ≤ 0.60 kPa, for the 25-mm-thick XPS on studs at 400 mm (16 in.) o.c., for maximum building height of 12 m.
  • In order to confirm air leakage control and strength in the field, the CABS must be installed:
    • with the minimum specified thickness for the respective stud spacing over wood-frame walls; and
    • installed in the field by Owens Corning-trained installers/contractors according to the Owens Corning “FOAMULAR® CodeBord® Air Barrier System (CABS)” installation manual, publication no. 300494, dated 2011, which contains detailed construction drawings which must be followed for the original CABS and alternative details (Section 6-1), and also “FOAMULAR® CodeBord® Air Barrier System Installation Manual,” publication no. 300494A, dated 2016 for installation of the hybrid system (see Appendix A for examples).
  • A copy of the installation instructions must be available on the job site at all times during the installation for review by building officials. All installers must present their identification card upon request by the building official.

  Technical information

This evaluation is based on demonstrated conformance with the following criteria:

Evaluation requirements
Criteria number Criteria name
CCMC-TG-072709.01-15ACCMC Technical Guide for Air Barrier Systems

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

The product has demonstrated performance that meets the criteria of the CCMC Technical Guide. To qualify, a conforming air barrier system must:

  1. have an acceptable low air leakage rate;
  2. be continuous;
  3. be durable;
  4. have sufficient strength to resist the anticipated air pressure load; and
  5. be buildable in the field.

 

Air leakage testing
Results of testing of air leakage rate of the product after wind loading
Wood-frame walls Requirement Result
Original CABS (25-mm FOAMULAR® CodeBord®; XPS with foam gaskets beneath XPS panel joints) Specimen no. 1 – opaque wall Air leakage rateTable footnote (1)   at 75 Pa ΔP ≤ 0.05 L/(s·m2) 0.048 L/(s·m2)Table footnote (2)
Specimen no. 2 – continuity at penetrations
Specimen no. 3 – continuity at foundation and brick straps
Hybrid CABS (20-mm FOAMULAR® CodeBord® XPS(R4) with exterior taped seams) Specimen no. 1 – opaque wall Air leakage rateTable footnote (3) at 75 Pa ΔP ≤ 0.05 L/(s·m2) 0.042 L/(s·m2)Table footnote (2)
Specimen no. 2 – continuity at penetrations, foundation, brick straps
Hybrid CABS (25-mm FOAMULAR® CodeBord® XPS(R5) with exterior taped seams) Specimen no. 1 – opaque wall Air leakage rateTable footnote (1)   at 75 Pa ΔP ≤ 0.05 L/(s·m2) 0.040 L/(s·m2)Table footnote (2)
Specimen no. 2 – continuity at penetrations, foundation, brick straps
Permissible air leakage rates
Drying potential based on water vapour permeance (WVP) of outermost layer of wall assembly (ng/Pa·s·m2) Maximum permissible air leakage rates (L/s·m2) @ 75 Pa
15 < WVPTable footnote (1)   ≤ 60 0.05Table footnote (1)
60 < WVP ≤ 170 0.10
170 < WVP ≤ 800 0.15
> 800 0.20
Durability of system components
Results of testing of durability of components of the product
Component Requirement Result
Original CABS FOAMULAR® CodeBord® Air permeance before and after aging (ASTM D 726-84) < 10% increase PassedTable footnote (1)
Thermal resistance after heat aging and weathering 90% retention Passed
FoamSealR polyethylene sealing gasket Oxidative induction time (OIT) ≥ 30 minutes Passed
proprietary spray-in-place foam sealant Air leakage after aging ≤ 0.5 L/s at 75 Pa ΔP Passed
caulking sealant for protection from weather Meets ASTM C 920-14 Not evaluated for durability of air leakage performance
Hybrid CABS FOAMULAR® CodeBord® Air permeance before and after aging as per ULC S741 aging (i.e., 28 cycles of UV exposure + heat aging 772 h at 50°C) < 10% increase Passed
JointSealR®; Foam Joint Tape See CCMC 14003-R Passed
FlashSealR® Foam Flashing Tape See CCMC 14003-R Passed
Wind load resistance for the product
XPS panel Attachment schedule Wind load limit (Q50) Deflection beyond framing (max.)
20-mm FOAMULAR® CodeBord® Nails with 25-mm (1-in.) diameter cap washers, at 150 mm (6 in.) o.c., into wood studs at 400 mm (16 in.) o.c. Q50  ≤ 0.75 kPa 22 mm
25-mm FOAMULAR® CodeBord® Nails with 25-mm (1-in.) diameter cap washers, at 150 mm (6 in.) o.c., into wood studs 600 mm (24 in.) o.c. Q50  ≤ 0.55 kPa 11 mm
Appendix A – Construction details

The figures below outline the specimens tested representing typical construction details to be reproduced in the field by OCtrained installers as part of the installation quality control of the “FOAMULAR® CodeBord® Air Barrier System (CABS).” See Owens Corning’s installation manuals entitled “FOAMULAR® CodeBord® Air Barrier System” publication no. 300494, dated 2011 and “FOAMULAR® CodeBord® Air Barrier System Installation Manual” publication No. 300494A, dated 2016, for more complete details.

 

 
Complete air barrier system.
Figure 2. FOAMULAR® CodeBord® Air Barrier System (CABS) – Original CABS
  1. FoamSealR gaskets are installed under the sill plates to maintain continuity with foundation wall
  2. Continuity at penetrations for windows and doors is maintained with spray foam and caulking
  3. Polyethylene air/vapour barrier is installed at ceiling according to contractor's preferred method
  4. FoamSealR gaskets are applied over exterior framing members at joints between boards, corners, outside edges and around openings
  5. CodeBord® sheathing is securely fastened to outside of wood framing to provide airtight seals at all joints and outside edges
  6. Air sealing details for basement and crawlspace have been specially developed to work together with the CodeBord® system

 

Air Barrier System with exterior seam and flashing tape.
Figure 3. FOAMULAR® CodeBord® Air Barrier System (CABS) – Hybrid CABS with exterior seam and flashing tape

 

Fastening details for air barrier system.
Figure 4. FOAMULAR® CodeBord® Air Barrier System (CABS) sealing with gasket at joints (Original CABS) and fastening details (or Hybrid CABS, the gasket is replaced by a proprietary sheathing tape over the panel joint)
  1. NEVER set nails so that washers overlap the edges of the sheathing. This prevents proper joining of boards
  2. Nails are required at all outside edges, all edges around openings, along all panel joints, and all intermediate framing members
  3. Maximum 6 in. (150 mm) centre to centre
  4. Spiral nail with plastic or metal washers are the only approved means of fastening the sheathing
  5. Gaskets are required behind ALL joints between panels
  6. Minimum depth of penetration 1 in. (25 mm)

 

Sealing details for installation around windows.
Figure 5. Sealing details around box and flanged windows (see manufacturer’s literature for other sealing options)
  • Owens Corning FlashSealR foam flashing tape used in 3 ways
    1. Sealing rough opening to FOAMULAR® CodeBord® panel
    2. Sealing window frame to FOAMULAR® CodeBord® panel
    3. Sealing head flashing to FOAMULAR® CodeBord® panel
  1. Note: sill flashing (not shown) must be installed
  2. Important: bottom 2 corners of rough opening (before installing window) are sealed with tapered strips of Owens Corning FlashSealR foam flashing tape
  3. 8 in. (203 mm) minimum (up each side)
  4. Flange window
  5. Plan view:
    1. Air-tight seal to all sides of opening
    2. Box window
    3. Owens Corning FlashSealR foam flashing tape (top and sides only)
    4. Flange window
  6. Section (brick veneer):
    1. Head flashing
    2. FoamSealR gasket
  7. Section (vinyl siding):
    1. Head flashing
    2. FoamSealR gasket

 

Gasket at joints sealing techniques.
Figure 6. Sealing of exterior electrical boxes to maintain plane of airtightness
  1. Locate electrical box adjacent to stud framing member, and cut hole in the CodeBord®. Apply FoamSealR gasket to stud and attach stud support for electrical box. Screw the airtight outdoor electrical box to stud support. Seal around the electrical box with PinkSeal foam sealant. Seal the opening for the electrical wires. Caulk the box cap to the siding.
  2. Siding
  3. FoamSealR gasket
  4. Stud support
  5. Foam sealant
  6. Electric wires in metal conduit
  7. Foam sealant
  8. Airtight outdoor electrical box
  9. Cap
  10. Caulking

Administrative information

Disclaimer

This evaluation is issued by the Canadian Construction Materials Centre (CCMC), a part of the Construction Research Centre at the National Research Council of Canada (NRC). The evaluation must be read in the context of the entire CCMC Registry of Product Assessments and the legislated applicable building code in effect.

The CCMC was established in 1988 on behalf of the applicable regulator (i.e., the provinces and territories) to ensure—through assessment—conformity of alternative and acceptable solutions to regional building codes as determined by the local authority having jurisdiction (AHJ) as part of the issuance of a building permit.

It is the responsibility of the local AHJs, design professionals, and specifiers to confirm that the evaluation is current and has not been withdrawn or superseded by a later issue. Please refer to the website or contact:

Canadian Construction Materials Centre
Construction Research Centre
National Research Council of Canada
1200 Montreal Road
Ottawa, Ontario, K1A 0R6
Telephone: 613-993-6189
Fax: 613-952-0268

The NRC has evaluated the material, product, system or service described herein only for those characteristics stated herein. The information and opinions in this evaluation are directed to those who have the appropriate degree of experience to use and apply its contents (i.e., AHJs, design professionals and specifiers). This evaluation is only valid when the product is installed in strict compliance with the stated conditions and limitations of evaluation and the applicable local building code. In circumstances where no applicable local building permit is issued and that no confirmation of compliance ‘for use in the intended field application’ is undertaken, this evaluation is null and void in all respects. This evaluation is provided without representation, warranty, or guarantee of any kind, expressed, or implied, and the NRC provides no endorsement for any evaluated material, product, system or service described herein. The NRC accepts no responsibility whatsoever arising in any way from any and all use and reliance on the information contained in this evaluation with respect to its compliance to the referenced code(s) and standard(s). The 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.

Language

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Copyright

© 2021 Her Majesty the Queen in Right of Canada, as represented by the National Research Council of Canada.

All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the CCMC.

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