The growth of single-ply roofing systems over the past 40 years has led to extensive research to validate and improve their long-term performance. Recently, as “cool” single-ply roofs have gained market attention, new questions have emerged in regard to vapor movement and the potential for moisture condensation. Starting with a discussion of the fundamentals of vapor movement in roofing systems, this webinar will review current research to gain understanding of the actual incidence of moisture condensation. Building on this research, the webinar will then identify the key factors that may lead to moisture accumulation in single-ply roofs. Finally, the webinar will provide practical suggestions for the roofing designer to avoid moisture condensation in modern commercial roofing systems.

Dr. James Hoff is an experienced executive and consultant in the building materials industry, currently serving as president of TEGNOS Research, Inc. a consulting organization founded in 2007 and dedicated to expanding understanding of the building envelope.

Known as the “World’s Best Roof®,” a Duro-Last® roof is perfect for any flat, low-sloped, new or retrofit application. Precision-fabricated accessories combined with prefabricated deck sheets or roll goods allow for a watertight roof that doesn’t sacrifice aesthetics. www.duro-last.com