Kent BrownUpgrading your home’s thermal protection is a smart move if you’re battling drafts or weather extremes.
Choosing the right attic insulation contractors in Toronto is key to stopping heat loss, slashing those monthly utility bills, and keeping your space comfortable year-round.
So, we’ve pulled together this guide to highlight the best local specialists to help you get top-tier results.
While you’re busy boosting your energy efficiency, it’s a great time to tackle other home maintenance, too. If you need a hand finding other reliable pros, check out our favourite electricians to keep everything running smoothly.
Let’s get started!
How much does attic insulation cost in Toronto?
Professional attic insulation upgrades in Toronto typically range from $1.50 to $7.00 per square foot, depending entirely on your chosen materials and layout.
| Insulation Material Type | Cost per Sq. Ft. (Installed) |
| Blown-In Fibreglass | $1.50 – $2.00 |
| Blown-In Cellulose | $1.75 – $2.50 |
| Fiberglass Batts | $0.50 – $2.30 |
| Spray Foam (Open/Closed Cell) | $3.00 – $7.00 |
How We Reviewed
1. EcoStar
Website: https://www.ecostarinsulation.ca/
Address: 3305 Yonge St
Contact: 1 866 789 1536 | 647 799 3106 | [email protected]
Hours: Monday-Friday 8:00 AM-7:00 PM; Saturday 9:00 AM-5:00 PM
EcoStar stands out as a deeply rooted, family-owned business that’s served Canadian homeowners since 2008. They back their attic installations with a complete money-back satisfaction guarantee, which is fantastic for peace of mind.
During consultations, estimators evaluate spaces to match materials with actual budgets rather than forcing a single choice. This is to prioritize finding the right fit for every home layout.
Consistent with this flexible approach, they effortlessly handle everything from dense polyurethane applications to traditional loose-fill upgrades.
That said, because they feature an extensive team structure with separate sales representatives, estimators, and tech crews, projects involve multiple points of contact.
Additionally, choosing premium foam over budget-friendly loose-fill can make the upfront cost feel heavy for a simple attic top-up.
Professional whole-home spray insulation
Great experience with EcoStar to spray insulate our entire house. They were very professional, always on time and did not hestiate to answer our questions quickly. They accidentally missed one small section to spray and arranged to come back the following day to fix it quick. Could not be happier with our choice. The price was also reasonable. After trying to contact multiple companies for quote, EcoStar was on the ball to help us out and get the job done right
- Stephanie Rioux | Google Review
Friendly and respectful technicians
Definitely worth the 5 out of 5 stars. The product is applied professionally (even the inspector said ‘good job’) and the technicians are very friendly, respectful and a pleasure to have in your home. I would totally recommend EcoStar Insulation.
- Nizam “Ron” Mohamed | Google Review
2. Foam Comfort Inc.
Website: https://www.foamcomfort.ca/
Service Area: Toronto and surrounding areas
Contact: 416 410 0961 | [email protected]
Hours: Monday-Friday 8:30 AM-6:00 PM
Foam Comfort Inc. focuses on using low-global-warming-potential materials to reduce household carbon footprints. They provide property owners with top-tier technical expertise from start to finish.
It’s a good thing to know that this team is one of only two contractors in Ontario recognized in the elite BASF FoamMasters network. This status showcases exceptional, manufacturer-approved installation skills.
Additionally, their field installers carry rigorous Caliber QAP (Quality Assurance Program) certifications, meaning they never compromise on safety guidelines. With these high standards, they deliver excellent energy efficiency and structural support.
The main drawback is their singular, heavy specialization in closed-cell spray foam solutions. This makes them a mismatched choice if clients seek classic non-foam alternatives.
They also maintain a strict weekday-only operation. Clients must carve out time during a busy work week since doors are closed over the weekend.
Smooth attic insulation experience
I did attic insulation with them. Great overall experience and very reasonable price. Diane was very accommodating and managed to book an appointment on short notice. Donovan came on time, was very thorough in explaining everything, and made the overall experience as smooth as possible. Work took as long as was estimated. Highly recommend.
- Samer Faour | Google Review
Noticeable attic insulation results
We had insulation blown into our attic recently, very professional from estimate to installation, service techs were polite and clean and did a great job. We are very pleased with the results, only wish we had done this years ago! Update: 3 weeks ago we had 16” of insulation blown into the attic, noticeable difference in upstairs heat and our house (on the right) used to look just like our neighbors (on the left) with lots of icicles hanging down.
- Blair Duncan | Google Review
3. Spray City Insulation
Website: https://spraycityinsulation.ca/
Address: 63 Alness St #7b North York
Contact: 437 912 9000 | [email protected]
Hours: Monday-Friday 9:00 AM-7:00 PM
Spray City Insulation stands out for their high standard of field execution, implementing strict supervisory oversight on every project to ensure an exceptional finish.
From what we’ve seen, they provide an incredibly detailed breakdown of how different products behave upfront, so you know exactly what is going into your home.
And to keep you in the loop, they also deliver documented progress reports at the end of every workday.
To give you the best possible protection, they use a premium two-pound closed-cell foam that acts as a robust vapour, water, and air barrier to maximize your home’s insulation.
Just keep in mind that they only operate on weekdays, so weekend bookings aren’t available.
Because they operate as general insulation contractors, they don’t focus solely on attic spaces. They also handle multiple residential and commercial structural spaces.
Fair pricing and excellent work
After doing extensive research and comparing several estimates, I decided to move forward with Spray City Insulation. Their pricing was fair, and the quality of their work was excellent .They arrived on time and completed the job as promised.
- George Ancuta | Google Review
Clean and well-explained foam installation
Spray City Insulation and Asher were fantastic! The foam was applied perfectly. The process was clearly explained and they arrived on time. Project area was nicely cleaned up at the end of the job. I will be using them again to do my basement. A+ contractor
- John Beadle | Google Review
4. Eco-Therma Inc.
Website: https://www.eco-therma.com/
Address: 325 Front Street W, 2nd Floor Office 2085A
Contact: Local 437 296 0116 | Toll Free 1 866 993 2080 | [email protected]
Hours: Available 24/7
Eco-Therma Inc. takes a smart, system-oriented approach to roof spaces, tailoring every project to the unique needs of historic century homes and townhouses. They focus entirely on providing practical, healthy ventilation solutions.
Their process is exceptionally thorough. They use specialized, high-powered vacuum machinery to safely remove old, degraded fibreglass or cellulose, ensuring the process doesn’t contaminate your home’s air supply.
When dealing with mould, they go beyond simple cleaning, using non-toxic treatments paired with root-cause moisture diagnostics to prevent the spores from returning.
To make these high-level services easier for busy clients to access, they offer 24/7 availability, meaning you can easily book late-evening appointments.
Keep in mind, however, that they prefer a mix of targeted air sealing and blown-in material over heavy foam applications, which they find to be expensive overkill for straightforward attics.
If you’re looking for a complete roofline foam wrap, this approach might not be the perfect fit for you.
Professional attic upgrade
I had my attic insulation upgraded by Eco-Therma, and the experience was excellent. Albert and his team were professional, on time, and very thorough. The crew did quality work, cleaned up well, and the results were immediately noticeable. Pricing was competitive, and the $1,000 rebate made it even better. Great communication, honest service, and top workmanship — highly recommended!
- SHAH AHSH | Google Review
Fast help for time-sensitive attic issue
We had an exceptional experience with ECO-THERMA. They were incredibly prompt and effective in helping our clients with a time-sensitive attic insulation issue during the home selling process. Their team was professional, their communication was excellent, and they completed the work quickly, allowing the sale to proceed without a hitch. We highly recommend their services for anyone needing reliable and efficient insulation work.
- Laura Skene | Google Review
5. Four Seasons Insulation
Website: https://www.4seasonsinsulation.ca/
Address: 600 Silver Creek Blvd #34, Mississauga
Contact: 416 727 4181 | [email protected]
Hours: Monday-Friday 7:00 AM-6:00 PM; Saturday 9:00 AM-3:00 PM
Four Seasons Insulation streamlines home improvements by handling insulation removal, air sealing, and custom ventilation setups under one roof.
They focus on delivering long-term structural protection, with well-trained teams ensuring that every property benefits from maximized energy efficiency and safer indoor air quality.
Another plus is that their credibility is backed by the Canadian Urethane Foam Contractors Association, which guarantees that they stick to strict health standards.
And having served the region for over 10 years, they also provide added peace of mind by maintaining comprehensive WSIB coverage for all on-site workers.
On the downside, you must book a formal on-site assessment to get a sense of costs, as pricing is fully customized. Furthermore, because they balance a broad catalogue of services, they’re not an exclusive, attic-only specialty workshop.
Prompt quote and clean attic work
Michael was prompt in communicating and coming out for a site visit to provide a quote and then setting up the date to do the actual attic insulation. He and his team did an excellent job and even cleaned up on their way out which was greatly appreciated.
- Anita Wadud | Google Review
On-time attic top-up service
I had the pleasure to hire Four season team to top up my attic insulation. Micheal was amazing and he did his best to work with my roofers schedule, and they finish the job on time. Even they cleaned my drive way after they are done. I highly recommend them.
- High Above | Google Review
