Spray Foam Insulation

We apply more spray foam than anyone else in Canada

And you won’t find another company that does it better. GNI is the industry leader in precision spray foam application and Canada’s largest purchaser of spray foam insulation. Our in-depth knowledge comes from over 40 years of experience with application, innovation, and working with leading manufacturers to field test new product offerings.

GNI installers are certified applicators for a wide range of specialized products and whole-building solutions, and are fully trained, licensed and certified in spray foam application. Everything we sell and install is covered by warranty and products we use are from sound, reputable manufacturers. Our installation teams are insured and covered by WSIB.

Using special equipment, highly-trained installers spray the compound in a thick liquid form. It expands into the coverage area and quickly hardens into a thick, dense layer.

“Trusted by industry-leading manufacturers to test and refine the newest products on the market.”

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Ideal for retrofit applications

Properly installed spray foam insulation creates a continuous air and vapour barrier that fills cracks and crevices to ensure complete coverage, which makes it an ideal choice for retrofit work. It has a high R-value per inch and is available in a variety of densities to fit every application. Not only does it insulate well, it adds structural strength. And an application lasts a lifetime and is not likely to need replacement or replenishment during the life of the building.

Spray foam increases energy efficiency, reduces heating and cooling costs, curtails air and moisture movement to allow for better air circulation, and can even boost the resale value of the building.