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D E C E M B E R 2 0 2 3 | 21 Insulation P H OTO G R A P H Y CO U RT E S Y C P C I including thin brick, form liners, and coloured stains on interior faces. Moreover, they can be erected at a rate of up to 120 linear metres per day on concrete or steel frame buildings. Notable clients of CPCI members who have taken advantage of double wythe systems include Amazon, Canadian Tire, AMC Theatres, and Walmart (the latter of which relied on precast concrete insulated Thermowall System panels from Central Precast to enclose a new 40,000-square-foot store in Kanata, Ottawa in just four weeks). In recent years, the insulation spray foam sector has undergone a seismic change driven by a heightened focus on environmental integrity. Notably, one company recently unveiled the latest eco-friendly closed cell spray foam that delivers the highest R value in the industry. Huntsman Building Solutions worked closely with spray foam contractors to develop and offer the new Heatlok Soya HP, which has the best R-value of any HFO product on the market with an LTTR value at 50mm of 2.06 RSI (R 11.68). Recognized for its ease of adhesion and superior insulation value, Heatlok Soya HP leverages Honeywell's latest Solstice Liquid Blowing Agent, a hydrofluo- roolefin agent said to be the most environmentally conscious produced to date. It boasts zero ozone-depletion potential and a global warming potential of less than one. Doug Brady, chief strategy officer for Huntsman Building Solutions, notes that it took about nine months of development and demos to arrive at Heatlok Soya HP, but the efforts were well worth it. "We launched in September and already it has been very well received by test users in different parts of Canada," he says. "I'm excited by the product's potential. It helps contractors by being a more efficient spray, and its proper application results in better building energy efficiency." Heatlok Soya HP is an all-in-one product: insulation, air barrier, vapour bar- rier, and rain screen. Up to eight inches of this spray foam insulation (which has a total of 20 percent recycled plastic and renewable soya oil) can be applied in a single day, boasting a high compressive strength of 37psi. Heatlok Soya HP can be used for a variety of applications: roofs, walls, and sub-slabs. It is ideal for cathedral roofs where ventilation may be challenging, and it also minimizes the penetration of other pollutants, allergens, and airborne irritants, thus contrib- uting to improved indoor air quality and increasing the comfort of a home while considerably reducing heating and cooling costs. The Canadian Urethane Foam Contractors Association (CUFCA) continues to advocate on several fronts, one being the advantage of unventilated (or conditioned) attic assemblies for residences. "A study we conducted with the University of Waterloo demonstrated a variety of benefits when insulation in homes is changed from the ceiling to along the roofline, one of them being resistance to high winds – because essentially the foam insulation used glues the entire roof assembly together," says CUFCA executive director Andrew Cole. Plus, such assemblies mean that if ductwork, air handlers, and sprinklers are located in the attic space, there's no need to worry about the thermal penalties associated with duct leakage, the moisture penalties associated with induced negative pressures, the durability issues associated with locating equipment in hostile environments, or the freezing pipe issues associated with sprinklers. Precast Double Wythe Insulated Panels with pre-installed windows.

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