Spray Foam Insulation Toronto & GTA

Open-cell spray foam insulation in Toronto typically costs $1.50 to $2.50 per square foot, while closed-cell spray foam ranges from $2.50 to $4.00 per square foot. The total project cost depends on the area being insulated, accessibility, required R-value, and whether existing insulation needs removal. Most basement insulation projects in Toronto range from $2,500 to $6,000. We provide free on-site estimates.

Absolutely. Toronto experiences extreme temperature swings from -25C in winter to +35C in summer. Spray foam insulation provides the highest R-value per inch of any insulation material and creates an airtight seal that eliminates drafts and air leakage. Most homeowners see 30-50% reductions in heating and cooling costs, with a typical payback period of 5-8 years. Combined with Ontario energy rebates up to $7,700, spray foam is one of the best home investments.

Open-cell spray foam has an R-value of R-3.5 to R-4 per inch, is softer, provides excellent soundproofing, and costs less. Closed-cell spray foam has an R-value of R-6 to R-7 per inch, acts as a vapour barrier at 2 inches or more, adds structural racking strength, and resists moisture. Closed-cell is ideal for basements, exterior walls, and roofs. Open-cell is best for interior walls and soundproofing applications.

Yes, when properly installed by certified professionals. Spray foam insulation is inert once fully cured, which takes 24 to 48 hours. During installation, occupants should vacate the area. Our installers use full PPE and follow all Health Canada and CUFCA safety guidelines. The cured foam does not off-gas and is safe for all residential applications including bedrooms and living spaces.

Many Toronto homeowners qualify for rebates through the Canada Greener Homes Grant and Enbridge Home Efficiency Rebate programs. Rebates can total up to $7,700 for insulation upgrades. You will need a pre-retrofit EnerGuide home energy audit. Our team can guide you through the rebate process and provide the documentation needed to claim your incentives.

Yes. We can inject closed-cell or open-cell spray foam into existing wall cavities through small access holes drilled in the drywall or exterior sheathing. The holes are then patched and finished. This is a common approach for older Toronto homes that need insulation upgrades without a full renovation. The foam expands to fill the entire cavity, sealing gaps and cracks that batt insulation cannot reach.

Spray foam insulation is designed to last the lifetime of your home — 50 years or more. Unlike fibreglass batts that can sag, settle, and lose R-value over time, spray foam maintains its thermal performance indefinitely because it adheres directly to the substrate and does not shift or compress. It also does not absorb moisture or provide a food source for mould or pests.

For Toronto (Climate Zone 6), the Ontario Building Code and Energy Star recommendations are: attic R-50 to R-60, exterior walls R-24+, basement walls R-20+, and crawlspace R-12+. With closed-cell spray foam at R-6.5 per inch, you can achieve R-20 with just 3 inches of foam in your basement walls. Our team assesses your home and recommends the most cost-effective approach to meet or exceed these requirements.