[CCMC 13659-R] CCMC Canadian code compliance evaluation

From: National Research Council Canada

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Code compliance opinion

It is the opinion of the Canadian Construction Materials Centre that WALLTITE® v.3 - Air Barrier System, 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
9.27.4.2. ASTM C 920-14 Elastomeric Joint Sealants ...Alternative

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 BASF Canada. The WALLTITE® v.3 - Air Barrier System consists of the following components and accessories:

  • principal material in the plane of airtightness: WALLTITE® v.3 spray polyurethane foam;
  • accessories for continuity:
    • Blue Skin®, a modified bituminous membrane (i.e., peel-and-stick or thermally fused) manufactured by Henry® Company for use as a transition membrane* over construction, control and expansion joints, at junctions between different assemblies and at penetrations; and
    • MasterSeal® NP1™ by BASF Canada and Polybitume 570-05 by Henry® Company sealants, for use at membrane-tofoundation junctions and for use on the interior side around window and door openings; and
  • component for wind load resistance: structural substrate, such as concrete block or exterior gypsum sheathing within a wall designed to withstand the anticipated loads.

If installed as part of the designated air barrier system, WALLTITE® v.3 spray urethane foam serves a dual function in the wall assembly: as the principal plane of airtightness of the designated air barrier system and as exterior insulation. The use of the product as insulation is covered under CCMC 13588-L.

The foam insulation consists of 2 components:

  • Elastospray® 8000A isocyanate, and
  • a polyurethane resin identified as WALLTITE® v.3.

The 2 components are mixed on site by an installer approved by BASF Canada to install the product. The resulting product is a Type 2 spray urethane with an assigned long-term thermal resistance value of 2.14 m2·°C/W per 50 mm. If the foam insulation serves as the principal component in the BASF Canada proprietary air barrier system, it must be installed at a minimum thickness and density, which are specified in the Conditions and Limitations section of this Report. As per CCMC 13588-L, the finished product is purple.

*The original full-scale testing was carried out with one proprietary transition membrane. Other proprietary membranes are qualified for use by BASF Canada through a small-scale tension test (i.e., WALLTITE® v.3 sprayed specimens over various substrates) to ensure the equivalent adhesion is maintained.

Manufacturing plants

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

  • Blackie, Alberta, Canada
  • Toronto, Ontario, 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 product, with a minimum thickness of 25.4 mm (1.0 in) of WALLTITE® v.3 spray urethane at a 39.1 kg/m3 density, has demonstrated sufficiently low air permeance with an air leakage rating of A1 (less than 0.05 L/s·m2∙Pa at 75 Pa reference ΔP) when tested in accordance with CAN/ULC-S742-11, “Air Barrier Assemblies - Specification.” This air leakage conforms to the permissible air leakage rate in the Results of testing the air leakage rate of the product table of this Report for as the outermost layer of the exterior wall assembly. The WVP of this product at a 25.4 mm thickness is approximately 51 ng/(Pa·s·m2).
  • In the above-mentioned specified steel stud construction, the product has demonstrated sufficient strength to resist wind loads so it can be used in the following height of buildings in geographical locations where:
    • the wind pressure Q50 ≤ 450 Pa (1-in-50-year wind pressure return period found in Appendix C of the NBC 2015), for maximum building height of 60 m;
    • the wind pressure Q50 ≤ 850 Pa, for maximum building height of 20 m;
    • the wind pressure Q50 ≤ 1 000 Pa, for maximum building height of 12 m;
    • the maximum deflection recorded for the steel stud assembly was 5.33 mm for a gust wind load of ± 1 630 Pa.
  • In the above-mentioned specified concrete block construction, the product has demonstrated sufficient strength to resist wind loads so it can be used in the following height of buildings in geographical locations where:
    • the wind pressure Q50 ≤ 650 Pa (1-in-50-year wind pressure return period found in Appendix C of the NBC 2015), for maximum building height of 120 m;
    • the wind pressure Q50 ≤ 750 Pa, for maximum building height of 80 m;
    • the wind pressure Q50 ≤ 850 Pa, for maximum building height of 40 m;
    • the wind pressure Q50 ≤ 1 000 Pa, for maximum building height of 20 m;
    • the maximum deflection recorded for the steel stud assembly was – 1.83 mm for a gust wind load of ± 2 560 Pa.
  • To provide the air leakage control and strength in the field, the product must be installed conforming to the limits above and installed in the field by Caliber-certified installers/contractors according to the “WALLTITE® v.3 - Air Barrier System Insulation Specification” dated June 1, 2015, which contains detailed construction drawings that must be followed. Caliber must conduct the necessary follow-up inspections to ensure that Caliber-certified contractors are performing the necessary field quality control (for example, transition membrane application, membrane adhesion/pull testing before spraying, sealant application before spraying, spray foam as per CAN/ULC S705.2-05, “Thermal Insulation – Spray Applied Rigid Polyurethane Foam, Medium Density – Application”). All results must be recorded on the Caliber daily worksheet for the WALLTITE® v.3 - Air Barrier System.
  • 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 Caliber identification card upon request by the building official.
  • The product must be identified with the manufacturer’s name or logo and the phrase “CCMC 13659-R.”

The product must be installed on-site by BASF Canada-trained installers following the BASF Canada specified product installation manual entitled “WALLTITE® v.3 Application Guidelines,” and dated March 23 2015, which contains detailed construction drawings which must be followed Specimens tested for qualifying system details of this Report for examples). In addition, Caliber carries out follow-up inspections of the installations on a periodic basis.

 

Air Barrier System – Field Quality Assurance

When the WALLTITE® v.3 spray urethane is applied as the designated air barrier system, BASF Canada requires that the installer be BASF Canada-trained and that Caliber conduct audits to ensure:

  1. the approved accessories are being used;
  2. proper installation of the transition membrane by conducting periodic tension testing as part of the BASF Canada-specified quality control;
  3. proper continuity details and substrate conformance as part of the quality control procedure for the product;
  4. proper application of the WALLTITE® v.3 spray foam; and
  5. daily work records are maintained for the air barrier system installation.

Insulation – Field Quality Assurance

When the proposed spray polyurethane is applied as spray-foam insulation, the material must be manufactured on site by qualified installers licensed by BASF Canada with field inspections carried out by Caliber. Caliber certifies BASF Canada’s training program and provides follow-up inspections to ensure installations are in accordance with CAN/ULC-S705.2-05, “Standard for Thermal Insulation – Spray Applied Rigid Polyurethane Foam, Medium Density, Installer’s Responsibilities – Specification.”

The product must be installed in accordance with the manufacturer’s installation manual. A copy of this manual must be available on the job site at all times during the installation. All installers must present their BASF Canada licensing card and specific site worksheet upon request by the building official.

Note: The BASF Canada field quality assurance program calls for periodic audits of the installers, usually random inspections with some mandatory inspections of larger projects. Building officials may contact BASF Canada (866-474-3538) and request an inspection for a specific job site if they deem it necessary. In cases where the installation is deemed non-conforming by Caliber/BASF Canada and is not reme- died by the installer, Caliber/BASF Canada will inform the owner/architect/building official of the non-conforming installation.

See CCMC 13588-L for additional limitations on the installation of the WALLTITE® v.3 spray-foam product.

Elastospray® 8000A isocyanate and the polyurethane resin WALLTITE® v.3 must have their containers (i.e., drums) identified by the phrase “CCMC 13659-R” and “CCMC 13588-L,” respectively.

  Technical information

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

Evaluation requirements
Criteria number Criteria name
CCMC-TG-072709.01-15CCCMC Technical Guide for Air Barrier Systems for Exterior Walls of Buildings

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.

Performance requirements

The results of testing the product, conducted on four representative specimens, are summarized in the tables below. The performance resulting from these tests has been deemed applicable to “WALLTITE® v.3 - Air Barrier System” based on equivalency testing.

The performance of the product has been tested in accordance with the CCMC Technical Guide for qualification for use as an air barrier system.

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.
Results of testing the air leakage rate of the product
Type of wall tested RequirementTable footnote (1) (S742 classification) Air leakage rate after wind loadingTable footnote (2) at 75 Pa ΔP Air leakage rate after wind loading at –20°C and at 75 Pa ΔP2
Exterior gypsum/metal stud walls A1 (≤ 0.05 L/s∙m2) 0.030 L/(s·m2) 0.042 L/(s·m2)Table footnote (3)
Concrete masonry units 0.041 L/(s·m2) 0.044 L/(s·m2)Table footnote (3)

For more information on the CCMC Technical Guide requirements and how they relate to the NBC 2015 requirements, please see the IRC Publication, Air Barrier Systems for Walls of Low-Rise Buildings: Performance and Assessment.

Durability of Air Barrier System Components

Results of durability testing of components in the “WALLTITE® v.3 - air barrier system”
Component Requirement Result
“WALLTITE® v.3” urethane insulation air permeance before and after aging (ASTM D 726-84): < 10% increase Passed
thermal resistance after heat aging and weathering: 90% retention Passed
Transition membrane: Blue Skin SA by Henry® Company physical properties before and after aging: 85% retention Passed
Sealant at membrane/foundation junctions: Polybitume 570-05 by Henry® Company complies with CAN/CGSB-37.29-M89 Passed
MasterSeal® NP1™ by BASF Canada complies with ASTM C 920-14 Passed

 

Specimens tested for qualifying system details 

Specimens tested for qualifying system details

The figures below outline the original full-scale specimens tested with WALLTITE® v.3 spray-urethane, which represent typical construction details to be reproduced in the field as part of the installation of BASF Canada’s current proprietary WALLTITE® v.3 - Air Barrier System. The representative specimens tested also contained defects (e.g., mortar missing, missing primer gap, etc.) to verify the sensitivity of the air barrier system to these possible field defects and allow for tolerances. See the “BASF WALLTITE® Technical Guide” for complete details.

Example of continuity across joints with transition membrane in masonry block infill wall with a steel frame.
Figure 1. Specimen No 1: Example of continuity across joints with transition membrane in masonry block infill wall with a steel frame
  1. 25.4-mm-thick WALLTITE® v.3 spray urethane foam installed over surface of wall (not shown)
  2. concrete blocks
  3. steel frame
  4. peel-and-stick bituminous membrane with primer
  5. peel-and-stick bituminous membrane without primer
  6. structural tie
  7. intentional mortar joint defect for testing
  8. 8 ft. (6 courses of blocks)
  9. 8 ft. (12 rows of concrete blocks, 6 in. x 8 in. x 16 in.)
  10. 3 in. typical

All construction, control or expansion joints in an exterior wall assembly must be bridged by a transition membrane as part of the WALLTITE® v.3 - Air Barrier System.

Example of continuity across junctions and penetrations in masonry block infill wall with a steel frame and at foundation wall.
Figure 2. Specimen No. 2: Example of continuity across junctions and penetrations in masonry block infill wall with a steel frame and at foundation wall
  1. 25.4-mm-thick WALLTITE® v.3 spray urethane foam installed over surface of wall (not shown)
  2. concrete blocks
  3. steel frame
  4. peel-and-stick bituminous membrane with primer
  5. window opening
  6. structural tie
  7. concrete footing
  8. galvanized steel duct
  9. steel pipe
  10. electrical conduit
  11. reinforcing ties
  12. brick veneer anchors
  13. measurement of 3 in.
  14. measurement of 8 in.
  15. measurement of 2 ft.
  16. measurement of 4 ft.
  17. measurement of 8 ft. (12 rows of concrete blocks, 6 in. x 8 in. x 16 in.)

Since the foundation wall is designated as part of the air barrier system in this case, a transition membrane with sealant (see cross-section details) must be sealed to the foundation wall to maintain the continuity of the plane of airtightness. In addition, note that mechanical fasteners for brick veneer and penetrations from electrical wiring, pipes or ducts must be sealed through the use of a transition membrane.

Details of transition membrane at joints between masonry wall and steel frame.
Figure 3.

Details of transition membrane at joints between masonry wall and steel frame

  • A: Wall upper section
  • B: Wall lower section
  • C: Wall section
  • D: Opening lower section (wall section)
  • E: Structural movement
  1. 25.4-mm-thick WALLTITE® v.3 spray urethane foam installed over surface of wall
  2. concrete blocks
  3. steel structure
  4. self-adhesive membrane section with primer 
  5. opening
  6. polymer base caulking strip
  7. 8 in. × 10 in. concrete footing with reinforcement
  8. 4 in. × 4 in. galvanized steel duct
  9. 1½ in. dia. steel pipe
  10. foam seal gasket
  11. caulking
  12. glass fiber
  13. measurement of 3 in.
  14. measurement of 8 in.
  15. measurement of 1 in.
Example of continuity across joints with transition membrane in gypsum and metal stud infill wall with a steel frame.
Figure 4. Specimen No. 3: Example of continuity across joints with transition membrane in gypsum and metal stud infill wall with a steel frame
  1. 25.4-mm-thick WALLTITE® v.3 spray urethane foam installed over surface of wall
  2. exterior gypsum board
  3. steel frame
  4. peel-and-stick bituminous membrane with primer
  5. peel-and-stick bituminous membrane without primer
  6. 20 ga. steel stud
  7. 3 in. typical
  8. measurement of 6 in.
  9. measurement of 8 in.
  10. measurement of 2 ft.
  11. measurement of 1 ft.

All construction, control or expansion joints in an exterior wall assembly must be bridged by a transition membrane as part of the WALLTILE® v.3 - Air Barrier System.

Example of continuity across junctions and penetrations in gypsum and metal stud infill wall and at foundation wall.
Figure 5. Specimen No. 2: Example of continuity across junctions and penetrations in gypsum and metal stud infill wall and at foundation wall
  1. 25.4-mm-thick “WALLTITE® v.3” spray urethane foam installed over surface of wall
  2. exterior gypsum board
  3. exterior gypsum board
  4. peel-and-stick bituminous membrane with primer
  5. window opening
  6. 20 ga. steel stud
  7. concrete footing
  8. galvanized steel duct
  9. steel pipe
  10. electrical conduit
  11. gypsum panel joint
  12. Dur-o-wall anchor
  13. Bailey brick connector
  14. steel frame (3 in.)
  15. measurement of 2 ft.
  16. measurement of 8 in.
  17. measurement of 4 ft.
  18. measurement of 8 ft.

Since the foundation wall is designated as part of the air barrier system in this case, a transition membrane with sealant (see cross-section details) must be sealed to the foundation wall to maintain the continuity of the plane of airtightness. In addition, note that mechanical fasteners for brick veneer and penetrations from electrical wiring, pipes or ducts must be sealed through the use of a transition membrane.

Details of transition membrane at joints between exterior sheathing wall and penetrations.
Figure 6.

Details of transition membrane at joints between exterior sheathing wall and penetrations

  • A: Wall upper section
  • B: Wall lower section
  • C: Wall section
  • D: Opening lower section
  • E: Structural movement
  1. 25.4-mm-thick WALLTITE® v.3 spray urethane foam installed over surface of wall
  2. exterior gypsum board
  3. steel structure
  4. self-adhesive membrane section with primer
  5. 20 ga. steel stud
  6. polymer base caulking strip
  7. 8 in. × 10 in. concrete footing with reinforcement
  8. 4 in. × 4 in. galvanized steel duct
  9. 1½ in. dia. steel pipe
  10. foam seal gasket
  11. caulking
  12. glass fiber
  13. opening
  14. measurement of 3 in.
  15. measurement of 8 in.
  16. measurement of 1 in.

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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