Spray Foam Insulation in Toronto & Ontario
Residential, commercial, and industrial spray foam insulation services designed to improve energy efficiency, comfort, and long-term performance across the GTA and Ontario.
- Open-cell & closed-cell spray foam
- Attics, basements, walls, and commercial buildings
- Industrial Fireproofing Insured Company
- Licensed, experienced installers
- Serving Toronto & surrounding Ontario areas
- Blown in Insulation Services
- Roofing Spray Foam
- Polyurea Coating
- Licensed, insured & bonded spray foam contractor
Our Spray Foam & Fireproofing Insulation Services across Canada
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WHY CHOOSE US
Trusted Spray Foam & Insulation Experts
Energy-Efficient Solutions
Our spray foam insulation reduces air leakage, improves comfort, and lowers long-term energy costs.
Licensed & Insured
Fully certified spray foam installers with strict safety and building-code compliance.
Residential & Commercial Experts
From homes and basements to large commercial and industrial buildings, we handle projects of all sizes.
Licensed, Insured & Bonded for Commercial Projects
Spray Foam Kings is a fully licensed, insured, and bonded spray foam insulation contractor serving Toronto and Ontario. Bonding allows us to work on larger commercial, industrial, and institutional projects where financial assurance, compliance, and contractor accountability are required.
Our team meets site requirements for general contractors, property managers, developers, and facility operators across residential, commercial, and industrial builds. Spray Foam Kings provides professional spray foam insulation services across Toronto, including North York, Scarborough, and East York.
Spray Foam Insulation FAQs – Toronto & Ontario
How much does spray foam insulation cost in Toronto and Ontario?
Spray foam pricing in Toronto & Ontario is usually quoted per board foot (1 sq ft at 1” thick), and the range depends on foam type, thickness (R-value target), and access. As a rule of thumb, open-cell often lands around $0.35–$0.65 per board foot, while closed-cell is commonly $1.00–$1.50+ per board foot; when you convert that to a “per sq ft of area,” the total changes based on how many inches you need. For budgeting, many Ontario projects fall into broad installed totals like $1,500–$3,000 (small areas), $3,000–$5,000 (medium areas), and $10,000–$20,000+ (full-home scale), but the only accurate number comes from measuring the area, confirming required thickness, and checking site conditions.
How long do I need to stay out of the house after spray foam insulation?
Most projects require a short vacancy while the foam cures and the space is ventilated; many pros recommend 24–48 hours depending on product and job conditions. If odor is noticeable beyond that window, the fix is usually more ventilation and an installer check to confirm proper mixing and cure..
What’s the difference between open-cell and closed-cell spray foam?
Open-cell is lighter, expands more, and is often used for interior applications where you want air-sealing and sound control; closed-cell is denser, delivers higher insulation per inch, and is commonly chosen for below-grade areas, rim joists, and demanding commercial insulation uses. For quick context, many references list open-cell around R-3.6 to R-3.8 per inch and closed-cell around R-5.5 to R-6.5 per inch.
Is spray foam insulation safe, and will it off-gas?
Spray foam can smell during installation and early cure, which is why ventilation and proper application matter. When installed correctly and allowed to cure, off-gassing drops dramatically—so “safe” comes down to materials + correct install + ventilation
Is spray foam a good choice for attics in Ontario?
Yes—attics are one of the biggest leak points in Ontario homes, and spray foam’s strength is air-sealing. Many homeowners compare it to blown-in because blown-in insulation can be cheaper upfront, while spray foam can deliver stronger sealing and comfort; the right choice depends on attic design, budget, and whether you’re insulating the attic floor or the roofline.
Can spray foam help with basement dampness or mold risk?
Closed-cell spray foam is often chosen for basements and rim joists because it can act as insulation + moisture control when applied to a properly prepared, dry substrate. The key is not trapping existing moisture—any active water issue should be addressed first, then foam becomes a strong part of the solution.
Do you remove old insulation before spraying (attic or basement)?
Often, yes—especially if existing insulation is wet, contaminated, or blocking access to air leaks that need sealing first. In some cases, leaving old material can trap odors or hide issues, so we assess the space and recommend the cleanest, most durable approach for performance and indoor air quality.
Is spray foam insulation code-compliant in Ontario?
In Ontario, medium-density spray polyurethane foam installations are generally tied to the CAN/ULC-S705.2 application standard referenced by the Ontario Building Code. Practically, that means the install must follow recognized procedures and certification requirements—not DIY shortcuts—especially when foam is serving as an air/vapour control layer.
Are there rebates in Ontario for insulation upgrades?
Yes—Ontario programs can offer rebates for insulation improvements, including attic and foundation/basement-related upgrades, depending on eligibility and program rules. A common path homeowners use is Enbridge’s Home Efficiency Rebate Plus (and related Ontario efficiency programs), which can include insulation incentives
How long does a typical spray foam job take?
Many attic or basement jobs can be completed in a day, while larger homes or commercial spaces may take longer depending on prep, masking, access, and thickness requirements. We confirm timing and re-entry guidance before the job starts so there are no surprises
What is spray-applied fireproofing (SFRM), and when is it needed?
SFRM (spray-applied fire-resistive material) is a passive fire protection coating used on structural steel and assemblies to help meet required fire ratings on commercial/industrial projects. It’s commonly specified by engineers/architects for warehouses, multi-unit buildings, and structural steel where fire resistance is required by design.
Why do commercial projects specify CAFCO / Isolatek fireproofing systems?
CAFCO/Isolatek systems are widely documented and tested across many assembly types, which helps designers specify to listings and helps contractors execute to manufacturer guidance. The “why” is simple: clearer specs, proven systems, and better alignment with tested designs and documentation.
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Spray Foam Insulation Tips, Guides & Insights
Services Overview
Spray Foam Kings provides spray‑foam insulation for residential, commercial and industrial projects across the Greater Toronto Area and the wider province of Ontario. Our core services include:
- Open‑cell spray foam – R‑3.7 per inch, ideal for attic floors and interior wall cavities.
- Closed‑cell spray foam – R‑6 per inch, suitable for below‑grade walls, rim joists, crawl spaces and flat roofs.
- Attic insulation – Open‑cell or closed‑cell applied to attic floors, slopes or cathedral ceilings.
- Basement & rim‑joist insulation – Closed‑cell for air‑sealing, vapour control and mould prevention.
- Industrial fire‑proofing (SFRM) – NFCA‑certified spray‑applied fire‑resistive material with fire ratings of 1–4 hours.
- Roofing spray foam – Insulation and waterproofing in a single application for flat roofs.
- Polyurea coating, waterproofing, blown‑in insulation, garage insulation and larger commercial spray‑foam projects.
All installations follow Ontario Building Code SB‑12 requirements and are performed by CUFCA‑trained, NFCA‑certified crews.
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How We Price
Pricing is calculated per square foot of installed area and varies with foam type, thickness and site conditions. Typical rates are:
| Foam type | Installed cost (CAD) | Example – 1 200 sq ft attic at R‑20 |
|---|---|---|
| Open‑cell | $1.50 – $3.50 / sq ft | $2 800 – $4 200 |
| Closed‑cell | $2.50 – $5.00 / sq ft | $6 000 – $8 400 |
Other common jobs:
- Rim‑joist insulation (closed‑cell) – $800 – $1 500.
- Attic insulation removal – $400 – $800 for a 1 200 sq ft area (depends on depth and access).
Small residential jobs typically fall between $1 500 – $3 000, medium projects $3 000 – $5 000, and full‑home installations $10 000 – $20 000+.
All customers receive a free, written, itemised quote before any work begins.
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Our Installation Process
- Site assessment – A technician measures the area, discusses performance goals and determines the required foam thickness.
- Quote & paperwork – We provide an itemised quote and, if applicable, prepare rebate documentation (Enbridge HER+ or Canada Greener Homes).
- Preparation – Existing insulation is removed when necessary, and the substrate is cleaned and dried.
- Application – Certified installers apply the spray foam using equipment that meets CUFCA and NFCA standards. Closed‑cell foam also serves as a Class‑II vapour retarder when installed at 2 inches or more.
- Curing & ventilation – The foam cures in 24 hours; the space is ventilated for an additional 24–48 hours before re‑occupancy.
- Final inspection & warranty – We verify adhesion, thickness and coverage. All work is covered by a workmanship warranty that repairs delamination, shrinkage or adhesion failures at no charge.
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Frequently Asked Questions
What is the difference between open‑cell and closed‑cell foam? Open‑cell foam expands more, is lighter, and provides air‑sealing and sound control; it rates about R‑3.7 per inch. Closed‑cell foam is denser, offers higher insulation (R‑6 per inch), and acts as a vapour barrier when installed at 2 inches or more, making it suitable for basements, rim joists and flat roofs.
How long must I stay out of the house after installation? A minimum of 24 hours of ventilation is required; most whole‑home jobs recommend 24–48 hours before normal occupancy.
Is spray foam safe and does it off‑gas? When installed by certified professionals and allowed to cure, off‑gassing is minimal. Proper ventilation during and after installation further reduces any odor.
Can spray foam help with basement dampness or mould? Closed‑cell foam provides both insulation and moisture control when applied to a dry, prepared surface. Existing water issues should be resolved before foam is installed.
Do you remove existing insulation? We assess each space. Removal is common when the old material is wet, contaminated, or prevents access to air leaks. Vermiculite insulation requires licensed abatement before removal.
Is spray foam code‑compliant in Ontario? All installations follow the Ontario Building Code and the CAN/ULC‑S705.2 application standard, as required for medium‑density spray polyurethane foam.
Are there rebates available? Yes. As an Enbridge HER+ partner, we can help you claim up to $10 600 in rebates. Projects may also qualify for the Canada Greener Homes program. We handle the paperwork for you.
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Service Areas & Contact
Spray Foam Kings serves Toronto and the surrounding Ontario regions, including Scarborough, North York, Etobicoke, Vaughan, Mississauga, Markham, Brampton, Hamilton, Oakville, Aurora, Newmarket, Richmond Hill, Ajax, Pickering, Oshawa, Burlington, Barrie, London, Waterloo, Kitchener, Cambridge, Guelph, St. Catharines, Kingston, Ottawa and locations province‑wide.
*Phone:* 647‑641‑6881 *Email:* info@sprayfoamkings.ca *Address:* 120 Metcalfe St., Aurora, ON L4G 1E8
For a free, written quote or to discuss rebates, use the form below or call us directly.