[CCMC 13617-R] CCMC Canadian code compliance evaluation

From: National Research Council Canada

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

Learn more about CCMC recognition

Code compliance opinion

It is the opinion of the Canadian Construction Materials Centre that “DRYLine® HP/GuardWrap® NXT / HWHP-80A Building Wrap - Air Barrier Material,” when used as an air barrier material 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
5.4.1.2. Air Barrier System PropertiesAcceptable
9.25.3.2. Air Barrier System PropertiesAlternative
9.36.2.10.(1) Materials intended to provide the princi ...Acceptable

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 material within the Jumpstart Consultants, Inc.-specified “HP80” – air barrier system. The air barrier system has not been evaluated, but is covered in Additional Information: An air barrier material as part of an air barrier system of this Report for the convenience of building officials and designers.

The product consists of two primary components: a non-woven polyester substrate which is laminated to a microporous, vapour-permeable polyolefin film barrier. The construction of the laminated material allows it to resist the passage of bulk moisture while maintaining a high degree of moisture vapour permeability. The product is 0.18 mm thick in a standard white colour, but is available in various colours upon request. It comes in rolls ranging in widths from 0.30 m to 3.05 m and in lengths from 7.0 m to 60.0 m.

If the product is installed as part of the designated air barrier system it will serve a dual function in the wall assembly. Use of the product as a sheathing membrane to control incidental water infiltration behind cladding is covered under a separate CCMC Evaluation Report (see CCMC 13426-R).

Manufacturing plants

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

  • Richmond, Virginia, United States

  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 must demonstrate a sufficiently low air permeance equivalent to the materials outlined in Table A-9.25.5.1.(1), Air and Vapour Permeance Values, and Sentence 9.36.2.10.(1) of Division B of the NBC 2015 to be the principle plane of airtightness in an air barrier system.
  • Generally, when the product is installed as part of the airtightness element of the proponent's proprietary air barrier system, the vapour barrier only needs to comply with Sentences 9.25.4.2.(1) and (5), Vapour Barrier Materials, of Division B of the NBC 2015. In cases where another low water vapour permeance element has been installed in the wall assembly, Article 9.25.5.1., General, of Division B of the NBC shall apply.
  • The product must be installed:
    • with the printed side facing outward and protected from exposure to ultraviolet (UV) radiation from the sun within 60 days;
    • with a minimum 10-mm air space between the sheathing membrane and the cladding, unless the cladding has been deemed to not require an air space (e.g., deemed by the CCMC or by the building officials based on past cladding performance); and
    • according to Jumpstart Consultants, Inc.-specified "HP80" installation manual (sheathing membrane, air barrier and header wrap). Examples of the installation details are presented in Additional Information: An air barrier material as part of an air barrier system.
  • A concealed air space exceeding 25 mm in width must contain proper fire stopping in accordance with Subsection 9.10.16., Fire Blocks, of Division B of the NBC 2015.

  Technical information

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

Evaluation requirements
Criteria number Criteria name
CCMC-TG-072709.02-15BCCMC Technical Guide for Air Barrier Materials

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
Test results for performance requirements
Test Requirement Result
Five 1 m2 membrane specimens were tested and measured for air permeance at a minimum of six air pressure differentials (ΔP) between 0 Pa and 250 Pa (unconditioned specimens) Air leakage rate at 75 Pa ΔP (based on linear regression of 30 data points) ≤ 0.02 L/(s·m2) 0.016 L/(s·m2)
Five 1 m2 membrane specimens were tested and measured for air permeance at a minimum of six air pressure differentials (ΔP) between 0 Pa and 250 Pa (conditioned specimens) Where less than 0.01 L/(s∙m2) for unconditioned specimens, the air leakage rate for conditioned specimens must not increase by more than 0.001 L/(s∙m2) at 75 Pa pressure difference. Pass
Water vapour transmission Report value 2456 ng/(Pa∙s∙m2)

The assessment of the product's durability is covered under CCMC 13426-R.

 
Additional Information: An air barrier material as part of an air barrier system

An air barrier material as part of an air barrier system

The CCMC has not evaluated the performance the performance of the Jumpstart Consultants, Inc.-specified "HP 80" air barrier system as to its conformance with Article 9.25.3.2., Air Barrier System Properties, of Division B of the NBC 2015. However, the CCMC's opinion is that an air barrier system using this material and installed in conformance with the details outlined below as well as in Jumpstart Consultants, Inc.'s installation manual should satisfy the requirements for continuity of the air barrier system in Articles 9.25.3.1., Required Barrier to Air Leakage, and 9.25.3.3., Continuity of the Air Barrier System, of Division B of the NBC 2015.

Discussion

Authorities having jurisdiction (AHJ) should be aware that this system differs from the typical air barrier approach, which uses a flexible membrane as the principal plane of airtightness. In the typical approach, the membrane (i.e., polyethylene sheet) is normally sandwiched between two other materials so that it is not required to resist, on its own, the full force of indoor/outdoor pressure differences induced by stack effect, mechanical systems and, most importantly, wind.

In a system in which the membrane is applied to the outer surface of the wall sheathing, as it is in the proposed air barrier system, that membrane does not have continuous support against outward air pressure and must, therefore, have adequate strength to resist that pressure by spanning between points of support, such as its own fastening points or the points where strapping or cladding is fastened to the wall. The CCMC’s evaluation of the proposed material does not include the evaluation of this strength or the strength of the continuity details. The AHJ must therefore determine whether the product's air barrier system, described herein, meets the intent of Sentence 9.25.3.2.(1) of Division B of the NBC 2015, as being an effective barrier for the proposed construction in the proposed geographical/climate area. For example, based on their experience, the AHJ may deem the proposed air barrier system adequate for buildings in urban areas, sheltered sites or areas of low wind, but inadequate in areas of high wind and exposed sites in rural or coastal areas.

An air barrier system checklist for the AHJ to consider is the following:

An 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.

Installation details

The product's material is applied over the wood-based wall sheathing material complying with the NBC 2015. It does not contribute to an air barrier system until it is joined to the other components that make up the air barrier system of the building. Jumpstart Consultants, Inc.'s installation manual outlines how the proposed material must be joined to the foundation wall, windows and doors, penetrations in the wall and the ceiling air barrier, thus forming the system.

A successful air barrier system installation is predicated on sequencing during construction. Coordination is required during erection of framing and after completion of the air barrier system to ensure that no other trade breaches the integrity of the installed air barrier system.

The proposed air barrier system is defined as possessing the following features:

  1. “HP 80” material as the principal plane of airtightness;
  2. accessories including: sealants and CCMC-evaluated sheathing tape to maintain continuity at junctions with penetrations in the wall assembly (i.e., windows, doors, pipes, ducts, electrical outlets, etc.), and in accordance with continuity details in Jumpstart Consultants, Inc.'s installation manual;
  3. durability, meeting UV and heat-aging requirements; and
  4. exterior sheathing with specified fasteners and fastening schedule of the product for structural support against anticipated pressure loads;

The air barrier is to be built in the field by informed builders and reviewed by building officials.

The figures below outline typical construction details of the installation of the product as an air barrier system in the field. See Jumpstart Consultants, Inc.'s "HP 80" installation guide for additional details.

Exterior wall cross-section of the product – top wall/ceiling continuity.
Figure 1. Exterior wall cross-section of the product – top wall/ceiling continuity
  1. wood-based sheathing installed with open horizontal gap
  2. ceiling air/vapour barrier
  3. CCMC-evaluated sheathing tape
  4. proprietary air barrier material
  5. typical overlap 100 mm and tape

All horizontal joints in the material must be overlapped 100 mm and taped with CCMC-evaluated sheathing tape. To maintain continuity of the plane of airtightness, the material must be sealed to the roof by using an appropriate transition membrane. The material should be secured underneath the transition membrane to ensure proper shingling. Wood-based sheathing, glass-fibre-faced exterior gypsum board, or exterior gypsum board having a water vapour permeance of less than 60 ng/(Pa·s·m2) must be installed in accordance with Article 9.25.5.2., Position of Low Permeance Materials, of Division B of the NBC 2015.

Bottom foundation detail for the product.
Figure 2. Bottom foundation detail for the product
  1. sill plate gasket
  2. sealant
  3. proprietary air barrier material
  4. tape
  5. flashing
  6. sealant
  7. sill plate gasket
  8. flashing

Since the foundation wall is part of the air barrier system, the product must be sealed to the foundation wall to maintain the continuity of the plane of airtightness. The sealant used must be compatible with the product. For example, silicone-based sealants must not be used. To maintain watertightness, the product’s sheathing membrane must be installed over the flashing and taped to properly drain any rain penetration breaching the cladding.

Structural fasteners for the product.
Figure 3. Structural fasteners for the product
  1. Stud centerlines
  2. 300 mm o.c.
  3. 150 mm o.c.
  4. 600 mm o.c.
  5. Overlap & tape vertical seams
  6. 25 mm cap nails or brick ties to be installed 150 mm o.c. into stud

When installed as the principal plane of airtightness, the product must be structurally attached using nails with plastic washers, screws with plastic washers, or appropriate brick tie anchors.

For wood-framed construction where the sheathing is either plywood, insulated board, glass-fibre-faced exterior gypsum, or exterior gypsum board, use nails with plastic washers and brick tie anchors.

For steel-framed construction where the sheathing is either glass-fibre-faced exterior gypsum or exterior gypsum, use screws with washers and brick tie fasteners.

All seams require a 100-mm minimum overlap and both vertical and horizontal seams should be secured with a CCMC-evaluated sheathing tape.

 
Window and door openings.
Figure 4. Window and door openings
  1. Outside view
  2. Make an inverted "Y" cut in membrane
  3. Tape cut corners
  4. Fasten proprietary barrier material to sides and bottom

The material must be cut and wrapped around framing at openings (see Figure 4). Cut ends should then be taped or caulked to the inside frame. To ensure continuity at this junction, a seal must be established with the window or door element (see Figure 5).

 
Illustration of window frame cross-section.
Figure 5. Window frame cross-section
  1. seal to window with sealant or foam compatible with proprietary air barrier material and wood/vinyl/aluminum frames
  2. wrap around jambs

The plane of airtightness of the material must be made continuous with windows and doors that are part of the air barrier system for the building envelope. The material must be sealed to the window or door frames with either sealant/backer rod or filled with sealant foam. Sealants must be compatible with the material and adhere to the framing material.

Illustration of exterior electrical boxes.
Figure 6. Exterior electrical boxes
  1. Proprietary air barrier material installed on sheathing but not shown for clarity
  2. Snap-on retainer
  3. Airtight plastic box
  4. Tape seal
  5. Seal exterior electrical outlet boxes or use airtight plastic boxes

All exterior electrical boxes or other penetrations through the material must be rendered airtight to maintain the plane of airtightness of the air barrier system. All electrical boxes must be wrapped and taped to the product’s membrane. Alternatively, airtight electrical boxes can be used.

Sealing at wall penetrations.
Figure 7. Sealing at wall penetrations
  1. Method One
    1. Proprietary air barrier material around opening
    2. Air flow
    3. Exhaust
    4. Seal around opening
    5. Inside
  2. Method Two
    1. Trim proprietary air barrier material around opening and tape connection
    2. Outside

Where pipes and ducts may breach the product’s membrane, they must be sealed to the membrane. A sealant bead or CCMC-evaluated sheathing tape compatible with the product and the pipe or duct material is recommended.

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

Une version française de ce document est disponible.
In the case of any discrepancy between the English and French version of this document, the English version shall prevail.

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.

Date modified: