Meet Darrell Paul, a highly experienced building envelope consultant based in Alberta with over 45 years of construction industry expertise. Starting as a framing carpenter, he progressed to site supervisor, construction manager, and marketing manager, earning the PHBI Master Home Builder and PHBI Master Home Renovator certifications in 1997. Darrell’s practical building science knowledge is showcased in “Building Envelope Tie-in Details,” published in 2022.

As an adjunct instructor for training organizations such as CIET, PHBI, and SAIT, Darrell shares his passion for building science and performance-based construction methods with students. He founded Qualistat Building Performance Consultants in 1986, providing design and testing services to Alberta’s builders and warranty providers. His ongoing desire for learning is evident through certifications like HRAI’s Certified Residential Air System Design Technician, ASNT Level 2 Thermographer, and Certified Energy Advisor. Darrell actively shares his knowledge regularly, presenting multiple seminars each year and is also involved in committees like CSA A440.4 window installation standards and Codes Canada, Joint Task Group on Potential Consequences of High Performing Homes, including work with PHBI on the development of a window installation course for fenestration Canada.