Attic insulation across Toronto, the GTA & beyond
Fix the attic.Change the whole house.
Control attic heat and airflow to protect the roof, improve comfort and reduce energy costs.
All year, not just winter
An attic causes different problems in every season.
Start with what you notice
Tell us what's wrong.
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Inside the attic
What we look at,and what we change.
One continuous full-depth layer, wall to wall, no bare spots — and every ceiling penetration capped and sealed.
What we do
Our Most Requested Services
Explore our most requested services and get a fast remote quote for your project.
Attic Insulation Top-Up
Improve home comfort and energy efficiency with professional attic insulation upgrades and top-ups.
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Attic Insulation Removal
Remove old, damaged or contaminated attic insulation using professional extraction and cleanup equipment.
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Mold Remediation
Professional mold remediation for attics, basements, walls, ceilings and other affected residential areas.
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Attic Decontamination & Sanitizing
Remove animal matter, odours and contaminated materials, then sanitize the affected areas.
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Attic Ventilation & Airflow
Improve soffit intake, baffles and roof ventilation to help control attic heat and moisture.
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Air Sealing
Seal accessible gaps and penetrations to reduce drafts, heat loss and uncontrolled air leakage.
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What our customers say
Five-Star Service, in Our Customers’ Words.
5.0 on Google, across 86 customer reviews.
Reviews published on the Google Business Profile of Eco-Therma Inc.
Great customer and install services. Very kind and easy to work with. I would definitely recommend this Eco-Therma Inc. to handle your insulation needs. They are also well priced
Professional crew! When it comes to attic insulation don't look elsewhere, hire Eco-therma Inc. Punctual, well mannered and left site clean.
Eco Therma provided a very professional service. They insulated my hair salon and decontaminated the basement of mold in one day. I recommend them to all residents of North York.
Eco-Therma did a great job at my home. The team was professional, on time, and very easy to work with. I’m very happy with the results and would definitely recommend them.
Absolutely amazing services, very polite and helpful company fulfilled all my needs and were very understanding. Have been recommending to all my neighbours and family
I highly recommend Eco-Therma Inc.! A caring, efficient, and super friendly team. Thank you for making the whole process so simple and reassuring!
I would recommended this business to anyone that wants the Best service and the most professional team in all over ontario thanks guys awesome work
I had very good service with Sebastien, very friendly and professional, impeccable work, don't hesitate to do business with Eco-Therma
I had a great service I highly recommend this professional work company I recommend you talk with Albert
They did a really good job, the workers are really simpathic & respectful , I recommend them to anyone who needs insulation done
Excellent service from start to finish. The team was punctual, professional, and the insulation made a huge difference. Highly recommend EcoTherma!
I am extremely satisfied with the new insulation; it has made a significant difference in my space. The customer service was exemplary—professional, knowledgeable, and a joy to work with. Thank you all!
Excellent service, professional and very friendly staff! I highly recommend this company! Thank you!
I'm very satisfied with the service. Hal were really helpful and thoughtful. The team were really quick and careful. I couldn't be happier. Thank you
I had a very good service, Albert guided me throughout the process and his team came to our place and they were quick and efficient. Thanks again.
Excellent job! Kevin Gouchie is who i spoke to he was very profesional and kind. Definetly recommand this company for this kind of work. Thank you!
I used Eco-Therma to upgrade my attic insulation and I am completely satisfied with the experience. They gave me good advice, the work was done perfectly, and I got a good price.
Where we work
Attics across Toronto, the GTA and beyond.
- Toronto
- Mississauga
- Etobicoke
- North York
- Scarborough
- York
- East York
- Brampton
- Vaughan
- Markham
- Oshawa
- Caledon
- Bolton
- Thornhill
- Woodbridge
- Port Credit
Not on the list? Call us, the service area is wider than this.
Questions we get every week
Tap a question, get a straight answer.
Tap a question and the answer comes back. Anything specific to your project, we sort out on the call.
Eco-Therma
Usually replies the same day
How do I know if my attic insulation is not enough?
The usual signs are cold rooms in winter, a hot upper floor in summer, ice at the roof edge, and heating bills that climb without a change in habits. None of them proves the cause on its own, which is why what matters is the depth and condition of the insulation already up there. Eco-Therma establishes both remotely, from your address and attic size.
How much insulation should an attic have in Ontario?
The right target for a specific attic is set after measuring what is already in place: how deep the existing layer is, how evenly it sits, and what shape it is in. A number chosen before that measurement is a guess.
Can new insulation go on top of the old insulation?
Often yes, when the existing material is dry and in good condition. If it is compacted, wet or contaminated by animals, it is removed first, because adding new material on top traps the problem instead of correcting it.
What causes ice dams on a roof?
Heat escaping into the attic melts snow on the roof, the water runs down to the cold edge and refreezes there. Cold weather is the trigger, not the cause, which is why two identical houses in the same storm behave differently.
Does attic mold come back after it is cleaned?
Attic mold does come back if the moisture that fed it is still there. The source is usually warm indoor air leaking into the attic, a fan discharging into the attic, or a roof leak, so correcting that source is part of the work rather than an extra.
What does a remote quote look at?
Eco-Therma works from the address, the attic size and what the house is doing: insulation depth and condition, air leakage paths through the ceiling, soffit intake and roof exhaust, and any signs of moisture or contamination. You get a range and a recommendation based on what is actually limiting the attic, not a standard package.
A practical next step
Find out what your attic is doing.
Tell us the address and roughly how big the attic is. We come back with a remote estimate and what we still need to confirm on site.