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Insulation
Great Northern Insulation
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94%

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Reviews for Great Northern Insulation

Average customer rating:
9.5 10 (926 reviews)

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Peter in Toronto
Peter in Toronto
4 reviews Richmond Hill, ON
10/10

Great , Honest and Professional Service

I hired Great Northern a few years ago to blow insulation into my attic. Alex took care of us. Just last week I reached out to Alex again for what we thought were condensation issues in our 1st floor. Alex provided us free consultation that saved us 1000s. We appreciate seeing companies like this still exist.

Approximate cost of services:
$10.00
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Company Response

Thank you, Peter! We're glad you had such a great experience with our free consultations, and that Alex's expertise was valuable to you.

Hayley in Ottawa
Hayley in Ottawa
0 reviews , ON
10/10

Stairwell Insulation

We hired Great Northern Insulation and couldn't be happier with the outcome. We had a stairwell that was quite high and couldn't possibly reach to insulate it ourselves. We were ignored by many companies, as the project wasn't very large. Great Northern Insulation was the first company to send us a quote and also came in much cheaper than anyone else. The job was completed by Jordan and Brian within a week of booking. The guys showed up on time, they knew what they were doing so the job was well done, and with no mess left behind. I couldn't recommend them more!

Approximate cost of services:
$1,100.00
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Company Response

Thank you for the review, Hayley! We're glad to hear that the team was able to help out with your project, and in such a timely manner.

Private User
Private User
Private User reviews Toronto, ON
10/10

Adding Insulation

The owner of Classic Products Roofing Systems, Daryl Brubacher recommended that I contact Alex Kopperson from Great Northern Insulation to resolve a chronic leak from our attic.

When Alex consulted with us during the winter, he spent a great deal of time carefully inspecting our attic and agreed with Daryl's analysis that we had a ventilation problem in addition to insufficient insulation.

Today, Jermaine and Harpreet arrived punctually to carefully prepare for the work we had scheduled. They were polite and caring. For instance, they asked about the history of the leak to ensure that they would double check any problem areas. As well, they pointed out a couple of spots of concern and spoke with Philip Teperman from PTM to ensure that the ventilation was ideal. (Philip's work was superb).

Jermaine and Harpreet were neat, hard working and professional. They scrutinized the attic in the same manner as Alex and took their time to give us the best possible result and end our water woes.

I would like to thank these two fine gentlemen for being conscientious and for improving the heating and air conditioning efficiency in our 1950s home. We couldn't possibly be more pleased.

Approximate cost of services:
$5,000.00
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Company Response

Wow, what a fantastic review and feedback, thank you! We will pass along your words to Alex, Jermaine and Harpreet to make sure they're able to see it, as well.

Thanks for choosing the team here at Great Northern Insulation.

Private User
Private User
Private User reviews Saint Andrews West, ON
10/10

Recent installation

I have GNI spray my drive under garage this week, the installers were early, they spent extra time ensuring that the area was covered in plastic to protect the other areas, they were thorough and made sure that we were all on the same page before starting. The garage was cleaner when they left than when they arrived and the quality of the work was excellent.

Approximate cost of services:
$6,700.00
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Company Response

Thank you very much! We're glad to hear you had such a great experience, especially with our team's attention to detail with site prep.

Alia
Alia
5 reviews Hamilton, ON
10/10

Basement Insulation

The insulation used by Great Northern Insulation is of exceptional high quality, compared to the old insulation that I had removed. The tradesmen (Phil and Matt) were professional, skilled and courteous. They left my basement tidy, by removing left over work materials. They were able to insulate my entire basement within half a day. My basement looks and feels brighter and warmer. I highly recommend this company.

Approximate cost of services:
$3,000.00
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Company Response

Fantastic, thank you Alia! We're glad you had such a good experience and appreciate the review. It means a lot to us when our customers share their experience with us, and we'll be sure to pass along your words to Phil & Matt.

A in Toronto
A in Toronto
0 reviews Brampton, ON
10/10

Attic insulation

Jermaine, Harpreet and Heui were courteous guys and completed the job in a very professional way. They covered the working area very nicely and cleaned up well after the job is done.

Approximate cost of services:
$2,712.00
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Company Response

Thank you very much for your review, and for choosing the team here at Great Northern Insulation! We're glad you had such a great experience and will be sure to pass along your kind words to the team.

Dragica in Manotick
Dragica in Manotick
0 reviews Milton, ON
10/10

Excellent work

Jermaine, Harpreet and James were wondeful, they took their time to set up, cleaned up after themselves, polite, courteous and did an excellent job. Would highly recommend this team to anyone.

Approximate cost of services:
$2,500.00
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Company Response

Thank you for your awesome review of our services, Dragica. We are glad we could help make your home as comfortable as possible. We'll be sure to pass along your kind words to the team. Thanks again for choosing Great Northern Insulation and for recommending us to others.

Private User
Private User
Private User reviews Vaughan, ON
10/10

Attic Insulation

Jermaine, Harpreet, and Gracie did excellent job upgrading my attic insulation. From the moment they arrived, they took great care to protect my home. They were very professional. After the job was finished, Jermaine showed me pictures of the completed work and explained what was done. Thank you!!

Approximate cost of services:
$2,000.00
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Company Response

Thank you so much for leaving this kind review. We really appreciate you being our customer and are glad we were able to meet your expectations! Thank you for choosing the team at Great Northern Insulation.

Private User
Private User
Private User reviews Toronto, ON
10/10

Honest work and clear communication

Jermaine and Ryan came by to work on attic insulation and blower-door draft-proofing for us. They were courteous and punctual. Upon arrival, they communicated their work to us and helped us understand the crucial parts of the house that needed work, allowing us some time to clear our clutter to free up the space for them.
They took the time to protect our furnitures and bedroom from dust. And they cleaned up before they left.

Approximate cost of services:
$2,000.00
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Company Response

Thank you for your awesome review of our services. We are glad we could help make your home as comfortable as possible. We'll be sure to pass along your kind words to the team. Thanks again for choosing Great Northern Insulation.

Private User
Private User
Private User reviews Toronto, ON
10/10

Attic insulation

The team of Jermaine, Harpreet and Gracie were very professional, knowledgeable and considerate. They did a great job without much noise or inconvenience.

Approximate cost of services:
$2,500.00
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Company Response

Hi there, Thank you very much for your thoughtful review. We are glad you are so happy with our crew’s work! We’ll be sure to pass along your note to our team.

The reviews on this page are the subjective opinion of the Author and not of HomeStars Inc.

More about Great Northern Insulation

For over 40 years, we have helped Ontario homeowners and builders build safer, more energy-efficient and sustainable communities. With a broad range of products and services, we are your insulation experts for existing home renovation upgrades and new residential home construction—satisfaction guaranteed. Proudly serving all of Southern Ontario, we are Ontario's largest insulation company and are Energy Star and Foam Masters™ certified. Get in touch for a Free In-Home Assessment—contact us today to learn more.

CATEGORIES
Home Inspection, General Contractors, Renovation Advisors, and Insulation
PRODUCTS
✓ Spray Foam (1/2 lb open cell) ✓ HFO Spray Foam (2 lb closed cell), ✓ Cellulose (Blown and dense-pack) ✓ Fibreglass (Batts, blown and blanket wrap) ✓ Mineral Wool (Batts) ✓ Hemp (Batts)
SERVICES
We install insulation throughout the home: ✓ Attic Insulation ✓ Walls Insulation ✓ Basement Insulation ✓ Crawlspace Insulation ✓ Garage Insulation ✓ Floors Insulation
BRANDS
We offer high performance, brand name insulation backed by third party warranties. Our certified installers are professionally trained to install all types of insulation.
SPECIALITIES
Spray Foam Insulation, Blown Fibre Insulation, Air Barriers, Old Insulation Removal, Air Sealing & Draft Proofing, Fire Protection, Batts & Vapour Barriers, Specialty Coatings, Soundproofing, Thermal Barrier, Under Slab Insulation.
WEBSITE
https://www.gni.ca/
YEAR ESTABLISHED
1980
NUMBER OF EMPLOYEES
300
LIABILITY INSURANCE
Yes
WORKERS COMPENSATION
Yes
WRITTEN CONTRACT
Yes
WARRANTY TERMS
https://www.gni.ca/about/service-commitment-great-northern-insulation
Company profile information is not moderated by HomeStars. Ask the contractor to verify before hiring.