Canadian Consulting Engineer

Closed-cell spray foam upgrades R-value

May 28, 2024

Heatlok Soya HP

Photo courtesy HBS.

Huntsman Building Solutions (HBS), based in Boisbriand, Que., has enhanced its closed-cell spray foam, Heatlok Soya HP.

Manufactured in Canada, the foam reportedly offers improved performance and application in walls, roofs, foundations and underslabs for commercial, industrial, institutional and residential building projects. Its air barrier system has been tested in accordance with CAN/ULC S742, Standard for Air Barrier Assemblies—Specification, and certified as a radon barrier.

The product contains 20% recycled plastic and renewable soya oil and offers resistance to mould and flood damage. It is also designed to block the intrusion of pollutants, allergens and other airborne irritants, protecting indoor air quality (IAQ) and reducing heating and cooling expenses by optimizing energy use.

“Architects and general contractors were looking for an upgraded product with a higher R-value, while maintaining the recycled content and sustainability features of the previous version,” explains, Jean-Francois Lupien, global director of product management for HBS. “and sprayers were looking for better adhesion and ease of application.”

HBS calls the product’s hydrofluoroolefin (HFO) blowing agent the most environmentally conscious to date, with zero-ozone depletion potential (ODP) and a global warming potential (GWP) equal to one. It can be used in a variety of applications, including HBS’s D-Max wall assembly, which allows spray foam insulation to be installed from the interior of the building while managing the thermal bridging of the studs and the structure.


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