Innovative Construction Products: From Qualification and Performance Assessment to Quality Control
Publication: Journal of Architectural Engineering
Volume 27, Issue 3
Abstract
Air-barrier systems (ABSs) are essential elements in the performance of building envelopes and they are specified in the National Building Code of Canada (NBC) to minimize the infiltration and exfiltration of air through the building envelope to control the risk of condensation. Although their primary function is to control the movement of air across the building envelope, when placed on the exterior side of the wall assembly, the barrier may also function as a water-resistive membrane, thereby reducing the movement of moisture toward the inside of the assembly. Since the publication of the Energy Code of Canada in 2014, more attention has been paid to the importance of ABS to control both heat flow and air transfer through the building envelope, which both contribute to rising costs of energy use in buildings. Recently, the Canadian Construction Materials Centre (CCMC) developed performance criteria for liquid-applied ABS. The CCMC is a recognized accreditation body that provides guidance to building officials with respect to the conformity of innovative products as alternative solutions to the NBC. In this paper, four key items are presented. First, a brief overview of liquid-applied ABS, their components and functions, and the motivation to use this product type in the construction industry is provided. Second, the qualification process for such product against requirements for compliance with the NBC in Canada and its market acceptance will be discussed. In doing so, the strategy recently adopted by the CCMC in the evaluation of innovative liquid-applied ABS will be reviewed. Third, the key performance criteria and the durability assessment for an expected 25 years of acceptable service life will be discussed. Finally, the quality control process for acceptable field applications will be briefly surveyed.
Get full access to this article
View all available purchase options and get full access to this article.
References
ASTM. 2013. Standard test method for air permeance of building materials. ASTM E2178-13. West Conshohocken, PA: ASTM.
ASTM. 2017. Standard test method for nondestructive measurement of dry film thickness of applied organic coatings using an ultrasonic coating thickness gage. ASTM D6132-13. West Conshohocken, PA: ASTM.
ASTM. 2020a. Standard test methods for measurement of wet film thickness of organic coatings. ASTM D1212-91. West Conshohocken, PA: ASTM.
ASTM. 2020b. Standard practice for measurement of wet film thickness by notch gages. ASTM D4414-95. West Conshohocken, PA: ASTM.
Canadian Commission on Building and Fire Codes. 2015. Vols. 1 and 2 of National building code of Canada. 14th ed. NRCC 56190. Ottawa: National Research Council of Canada.
Canadian Commission on Building and Fire Codes and Natural Resources Canada. 2017. National energy code of Canada for buildings. 4th ed. NRC-CONST 56215. Ottawa: National Research Council of Canada.
Di Lenardo, B. 2000. A method for evaluating air barrier systems and materials. Construction Technology Update No. 46. NRC-IRC-10340. Ottawa: National Research Council Canada.
Di Lenardo, B. 2005. The Canadian construction materials centre (CCMC), a service for building officials—Past, present and future, building officials association of BC (BOABC) news and reports (fall/winter). NRCC-48366. Ottawa: National Research Council Canada.
Hershfield, M. 1997. Air barrier systems for walls of low-rise buildings: Performance and assessment. NRCC 40635. Ottawa: National Research Council of Canada.
Masson, J.-F. 2018. Internal test report. Ottawa: Construction Research Centre, National Research Council Canada.
NRCC (National Research Council of Canada, Associate Committee on the National Building Code). 1965. National building code of Canada. 4th ed. NRCC 8305; NRC-IRC-8257. Ottawa: National Research Council of Canada.
Poirier, G., B. Di Lenardo, L. Cécire, and A. Caouette. 2004. “Evaluation strategy for innovative construction products and systems.” In CIB World Building Congress, NRCC 47053; NRC-IRC-16325. 1–12.
Riahinezhad, M., A. Eve, M. Armstrong, P. Collins, and J.-F. Masson. 2019. “Field temperature and moisture loads from a building envelope as the basis for accelerated aging of barrier membranes.” Can. J. Civ. Eng. 46 (11): 969–978. https://doi.org/10.1139/cjce-2018-0757.
Riahinezhad, M., J.-F. Masson, M. Lacasse, P. Collins, and B. Di Lenardo. 2018. “Liquid-applied air barrier systems for high-rise buildings: NBC requirements and performance testing.” In Canadian Building Envelope Technology Symp., 43–54. Mississauga, ON: RCI Inc.
Rousseau, M. Z. 2003. Heat, air and moisture control strategies for managing condensation in walls. NRCC 46734. Ottawa: National Research Council Canada.
ULC (Underwriters Laboratories of Canada). 2008. Standard for air barrier materials—Specification. CAN/ULC-S741 (Reapproved 2016). Toronto, ON: ULC.
ULC (Underwriters Laboratories of Canada). 2011. Standard for air barrier assemblies—Specification. CAN/ULC-S742 (Reapproved 2016). Toronto: ULC.
Wilson, A. G. 1961. Air leakage in buildings. Canadian Building Digest No. 23. Ottawa: National Research Council Canada.
Younes, C., C. Abi Shdid, and G. Bitsuamlak. 2012. “Air infiltration through building envelopes: A review.” J. Build. Phys. 35 (3): 267–302. https://doi.org/10.1177/1744259111423085.
Information & Authors
Information
Published In
Copyright
Crown Copyright © 2021 Published by American Society of Civil Engineers.
History
Received: Jun 8, 2020
Accepted: Feb 3, 2021
Published online: Jun 1, 2021
Published in print: Sep 1, 2021
Discussion open until: Nov 1, 2021
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.
Cited by
- J.-F. Masson, Itzel Lopez–Carreon, Jiyuan Wu, Otome Obukohwo, Peter Collins, Marzieh Riahinezhad, Elnaz Esmizadeh, Degradation and service-life prediction of silicone rubber in a highly alkaline environment simulating concrete, Engineering Failure Analysis, 10.1016/j.engfailanal.2022.106305, 138, (106305), (2022).