Attic Insulation in Toronto & Ontario
Improve your home’s comfort and energy efficiency with professional attic insulation services designed for Toronto’s climate. Proper attic insulation helps reduce heat loss, prevent ice damming, and lower energy costs by keeping indoor temperatures consistent year-round. Below is our full guide on : attic insulation Toronto
- Helps reduce heat loss and lower heating and cooling costs
- Improves indoor comfort during Toronto’s cold winters and hot summers
- Reduces drafts and uneven temperatures throughout the home
- Suitable for upgrades, retrofits, and older attic spaces
- Installed by licensed professionals serving Toronto and Ontario
Serving Toronto, the GTA, and surrounding Ontario communities.
Code-Compliant Attic Insulation in Ontario
Attic insulation plays a critical role in meeting energy efficiency and building performance standards for homes across Ontario. Our attic insulation installations are completed in accordance with applicable Ontario Building Code requirements and manufacturer guidelines to help ensure proper thermal performance, ventilation compatibility, and long-term durability.
Whether upgrading insulation in an older home or improving performance during a renovation, we assess attic conditions carefully to ensure insulation levels, coverage, and air sealing support both comfort and compliance.
Why Choose Attic Insulation in Toronto?
In Toronto’s climate, heat loss through the attic is one of the most common causes of high energy bills and uneven indoor temperatures. Proper attic insulation helps keep warm air inside during winter, reduces heat buildup in summer, and improves overall comfort throughout the home.
Upgrading attic insulation is one of the most effective ways to improve energy efficiency, especially in older homes with insufficient or deteriorated insulation.
- Helps lower heating and cooling costs year-round
- Improves comfort by reducing drafts and temperature swings
- Supports better indoor air quality and moisture control
- Ideal for older homes with under-insulated attics
- Installed efficiently with minimal disruption
How Attic Insulation Works
Attic insulation works by slowing heat transfer between your home and the outside environment. Properly installed attic insulation helps keep warm air inside during winter and limits heat buildup during summer, improving comfort and energy efficiency throughout the home. In many homes, attic insulation upgrades are completed alongside air sealing improvements to address common heat-loss areas and improve overall building performance.
1. Attic Inspection & Assessment
We begin by evaluating existing insulation levels, attic access, ventilation, and common air leakage points to determine the most effective insulation approach.
2. Preparation & Air Sealing
Before installing insulation, key gaps and penetrations are addressed to help reduce drafts and improve insulation performance. In some cases, this work is coordinated with spray foam insulation services for targeted air sealing.
3. Insulation Installation
Insulation is installed evenly across the attic floor or roofline to achieve consistent coverage and proper thermal resistance.
4. Final Check
Once installation is complete, insulation levels and coverage are reviewed to ensure performance goals are met.
Ready to Upgrade Your Insulation?
Get professional attic insulation services installed by licensed experts serving Toronto and communities across Ontario.
Open-Cell vs Closed-Cell Spray Foam
While attic insulation can be installed using different materials, spray foam is commonly used in attics where air sealing and moisture control are important performance considerations.
Open-Cell Spray Foam
Open-cell spray foam is a lighter, more flexible insulation that expands to fill wall cavities and irregular spaces. It provides excellent air sealing and sound reduction, making it a popular choice for interior walls, attics, and residential applications where breathability is important.
- Expands easily into wall cavities
- Excellent air sealing and sound reduction
- More flexible and breathable material
- Commonly used in attics and interior walls
Closed-Cell Spray Foam
Closed-cell spray foam is a dense, rigid insulation with a higher R-value per inch. It adds structural strength, resists moisture, and creates a strong vapour barrier, making it ideal for basements, crawl spaces, rim joists, and commercial or industrial buildings.
- Higher R-value per inch
- Acts as a moisture and vapour barrier
- Adds strength to walls and structures
- Ideal for basements, rim joists, and commercial buildings
Where We Install Spray Foam Insulation
In attic insulation projects, spray foam is commonly installed along attic floors, rooflines, and hard-to-seal areas to help improve energy efficiency and reduce air leakage.
Ideal for reducing heat loss, improving comfort, and increasing energy efficiency in homes.
Helps control moisture, air leaks, and temperature fluctuations in below-grade spaces.
Seals one of the most common sources of air leakage in residential homes.
Improves comfort and insulation performance in attached garages and home additions.
Designed for offices, retail spaces, warehouses, and commercial buildings.
Custom spray foam solutions for specialized and industrial insulation needs.
Spray Foam Insulation Pricing Factors
Attic insulation pricing depends on factors such as attic size, existing insulation levels, access conditions, and the type of insulation required to achieve proper thermal performance.
Spray foam insulation pricing can vary depending on the scope of the project and the conditions of the space. Rather than using flat pricing, we assess each job individually to ensure accurate estimates and long-term performance.
- Area being insulated (attic, basement, rim joist, garage, or commercial space)
- Total square footage of the project
- Type of spray foam used (open-cell or closed-cell)
- Accessibility and condition of the space
- Residential vs commercial application
As a general reference, spray foam insulation projects in Toronto and across Ontario typically range from a few thousand dollars for smaller residential areas to higher costs for larger homes or commercial buildings. Final pricing depends on site conditions, insulation type, and project scope, which is why we provide custom estimates after an on-site assessment.
Spray Foam Insulation FAQs
How do I know if my attic needs more insulation?
Common signs include high energy bills, uneven temperatures between floors, drafts, and ice buildup on the roof during winter. Older homes in Toronto often have insufficient attic insulation by today’s standards..
Can attic insulation be added over existing insulation?
In many cases, yes. Existing insulation is assessed to ensure it is dry, clean, and suitable to remain in place before adding new insulation to improve overall performance.
How much does spray foam insulation cost per square foot in Toronto?
Most quotes depend on foam type, thickness, and access. As a general Toronto reference, professional installation is often cited in the range of about $1.50 to $4.90 per sq ft (varies by project and specs). The fastest way to get an accurate number is an on-site assessment.
How much does it cost to spray foam 1000 sq ft in Toronto / GTA?
For a 1,000 sq ft project in the Toronto area, you’ll commonly see totals in the $2,500 to $6,000 range depending on thickness, open vs closed-cell, and prep work. Exact pricing changes based on how many inches you need and what surfaces are being sprayed.
How much does it cost to spray foam a 24x24 garage?
A 24’ x 24’ (2-car) garage is commonly estimated around $3,000 to $8,000, with many examples citing an average near $6,000 when walls + ceiling + labor are included. Final cost depends on whether it’s attached, the coverage areas, and required R-value.
How much does 2 inches of spray foam cost?
Spray foam is often priced by the board foot (1 sq ft × 1 inch thick). At 2 inches, you’re using 2 board feet per sq ft. Published Canadian ranges often show roughly $0.50–$1.00/board foot (open-cell) and $1.25–$1.65/board foot (closed-cell) as reference pricing points—then installation, prep, and access affect your final installed rate.
Is open-cell or closed-cell spray foam more expensive?
Closed-cell is typically more expensive because it’s denser and delivers a higher R-value per inch. Common published references show open-cell around $0.50–$1.00/board foot and closed-cell around $1.25–$1.65/board foot, with installed project totals varying by thickness and scope.
What factors affect spray foam insulation pricing?
Pricing usually depends on:
Area type (attic, basement, rim joist, garage, commercial)
Square footage + thickness (inches / R-value)
Open-cell vs closed-cell
Access & prep work (old insulation removal, tight areas)
Residential vs commercial requirements
How thick should spray foam insulation be in Ontario?
Thickness depends on where it’s installed and target performance. Published guidance often suggests roughly 5–6 inches for open-cell or 3–4 inches for closed-cell for many Canadian climates, with adjustments based on code and building design. We confirm the right build-up during the estimate.
Are there rebates for insulation upgrades in Ontario?
Some Ontario homeowners may qualify for utility rebate programs (availability and eligibility vary). For example, Enbridge promotes home efficiency rebates that can apply to insulation/air sealing in certain cases.
Ready to Upgrade Your Insulation?
Get professional spray foam insulation installed by licensed experts serving Toronto and communities across Ontario.
Attic Foam Insulation Service Areas
Attic insulation services are available for homes throughout Toronto, the GTA, and surrounding areas across Ontario.
- Toronto
- Mississauga
- Brampton
- Vaughan
- Markham
- Richmond Hill
- Oakville
- Milton
- Scarborough
- North York
Get a Free Spray Foam Insulation Estimate
Serving Toronto, the GTA, and communities across Ontario. Fast quotes. Licensed professionals. No obligation.