TECHNICAL RESEARCH
INDUSTRY EDUCATION
Testing R22+ Wall Assemblies
Description Building energy regulations are changing rapidly across Canada to meet government mandates to reduce energy consumption and greenhouse gas emissions. In British Columbia, the Energy Step Code was enacted in April 2017 for both Part 9 and Part 3 buildings to transition new housing stock to Net Zero energy ready by 2032. This project tested wall assemblies most commonly used in B.C. to see how they meet the B.C. energy requirements and whether they can remain durable in a coastal climate. Six types of wood-frame walls with different thermal insulation strategies, all meeting the R22 effective (RSI 3.85) requirement were included. Hygrothermal performance measurements gathered over a 19 month period provided valuable data for designing durable and energy efficient wall assemblies. Impact The goal of this project is to provide recommendations on durable and energy efficient wood-frame wall assemblies that can be readily used by builders.
Status: Project completed Available online at www.bchousing.org Partners: Forestry Innovation Investment and other industry partners Audience: Designers, builders,
manufacturers, architects, and the residential construction industry
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65 HOUSING RESEARCH & EDUCATION PROJECT HIGHLIGHTS | JULY 2021
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