Write a Review


HomeStars
Insulation
Great Northern Insulation
Star Score
Learn more about how StarScore uses a complex algorithm which considers a company's review ratings, responsiveness, reputation, and recency.

94%

This is the average rating based on homeowner reviews.
This indicates how long it's been since the last review.
Indicates how well a pro reacts to reviews and review-related interactions with Homeowners.
How well a company responds to Service Requests and Reviews.
Reviews by rating (past 12 months)
Verified by HomeStars

Reviews for Great Northern Insulation

Average customer rating:
9.5 10 (926 reviews)

Sort by

CEA
CEA
17 reviews Pickering, ON
9/10

Spray Foam Whole Ceiling

GNI came to install purple spray foam onto my ceiling. The crew was fast to set up but diligent in how they protected the rest of my house. The work was completed as scheduled. Their pricing was not cheap, but their foam has no off gassing, which is the most important.. Since it is not fun to tear out from your ceiling improperly mixed spray foam that is off gassing all the time. Hire the pros, don't go to the fly-by-nighters..

Approximate cost of services:
$5,000.00
1 of 1 people found this review helpful.
Was this review helpful?
Company Response

We have seen your compliment and would like to say thank you for your business.

Ronn Reaman from Uxbridge
Ronn Reaman from Uxbridge
1 review , SK
10/10

Cottage Floor Underside

Assisted Review

An assisted review is collected by a contractor on behalf of the homeowner after their work is completed. The homeowner must confirm the text of the review and may make any changes she or he deems appropriate. The homeowner then assigns the contractor a review score out of 10. Assisted reviews receive the same scrutiny as other reviews and must follow our review guidelines.

The crew was very friendly. I was very pleased with the crew and how they showed up in a timely manor and were efficient In getting the job done. I would definitely recommend Great Northern Insulation.

Approximate cost of services:
$2,000.00
Was this review helpful?
Company Response

Thank you for leaving us such a kind review Ronn, we truly appreciate your business.
The team at Great Northern Insulation

Mark Ascott from Gravenhurst
Mark Ascott from Gravenhurst
1 review Gravenhurst, ON
9/10

Spray Foam Skirting Around Cottage

Assisted Review

An assisted review is collected by a contractor on behalf of the homeowner after their work is completed. The homeowner must confirm the text of the review and may make any changes she or he deems appropriate. The homeowner then assigns the contractor a review score out of 10. Assisted reviews receive the same scrutiny as other reviews and must follow our review guidelines.

As usual the job was done top notch. Your crew was on time, they paid close attention to the details I wanted addressed and carried them out perfectly. There wasn't any complaining about cramped spaces or miscommunication between the salesman on what the job was and what the crew expected it to be. My customer happened to be at the job at the same time and was very impressed. As is always the case the job came in as quoted, no surprises which is always appreciated.
Thank you again

Approximate cost of services:
$2,700.00
Was this review helpful?
Company Response

Thank you for leaving us such a kind review Mark, we truly appreciate your business and will pass on your thoughtful words to the other crew members.
Thanks again!
The team at Great Northern Insulation

Private User
Private User
Private User reviews Toronto, ON
9/10

Attic

Assisted Review

An assisted review is collected by a contractor on behalf of the homeowner after their work is completed. The homeowner must confirm the text of the review and may make any changes she or he deems appropriate. The homeowner then assigns the contractor a review score out of 10. Assisted reviews receive the same scrutiny as other reviews and must follow our review guidelines.

Aaron your sale rep was good in presenting the quotation. We are quite satisfied with the performance of your installers namely Bernie , Justin and Scot.
Thank you for a job well done

Approximate cost of services:
$1,000.00
Was this review helpful?
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 team at Great Northern Insulation

Private User
Private User
Private User reviews Saint Williams, ON
10/10

Flat Attic and spray foam on walls of workshop/garage

Assisted Review

An assisted review is collected by a contractor on behalf of the homeowner after their work is completed. The homeowner must confirm the text of the review and may make any changes she or he deems appropriate. The homeowner then assigns the contractor a review score out of 10. Assisted reviews receive the same scrutiny as other reviews and must follow our review guidelines.

I couldn’t be happier with the work they did. Both the crew that did the blown in insulation, and the crew that did the spray foam were excellent. They were very efficient, masked the whole place, cleaned up everything, and the work they did was very well done. The young man that did the spray foam is an artist. I can’t thank you, and Great Northern, and your great crews enough for a job well done.

Approximate cost of services:
$1,700.00
Was this review helpful?
Company Response

Hi there,
Thank you for your awesome review for our services. We glad we could help make your home as comfortable as possible.
The team at Great Northern Insulation

Khaled Jamalalldeen from Milton
Khaled Jamalalldeen from Milton
1 review Milton, ON
7/10

Attic

Assisted Review

An assisted review is collected by a contractor on behalf of the homeowner after their work is completed. The homeowner must confirm the text of the review and may make any changes she or he deems appropriate. The homeowner then assigns the contractor a review score out of 10. Assisted reviews receive the same scrutiny as other reviews and must follow our review guidelines.

Everything went well and as expected except for the scheduling. I left multiple messages with both schedulers and did not get a return call until I would catch Leanne in her office. The crew was running late and I had to call in to see if they were still coming.

Approximate cost of services:
$855.00
Was this review helpful?
Company Response

Hi there Khaled,
We are glad we could be of service to you, however, we do apologize for any inconvenience we may have caused you.
The team at Great Northern Insulation

 in Toronto
in Toronto
1 review Toronto, ON
10/10

Attic insulation top-up

Though I'm not an expert, the estimator, Davis Gailitis gave me what I thought was a fair quote. However, what I am an expert on is customer service. Davis went beyond the line of duty in caring about an overheating issue in my attic. He took my call on weekends and followed up along the way to see if the issue had been resolved prior to my even committing to the insulation service.

As far as the actual topping-up from R-30 to R-60, the gents who did the work covered my furniture in plastic, took off their shoes, and treated my house and me with respect and consideration. Jacob Gallacher and his two associates were fine young pros who knew their business and were actually passionate and proud of their work.

Impressive.

Approximate cost of services:
$1,200.00
Was this review helpful?
Company Response

Thank you for you compliment, hope we can do business with you again

Private User
Private User
Private User reviews Burlington, ON
10/10

Attic

Assisted Review

An assisted review is collected by a contractor on behalf of the homeowner after their work is completed. The homeowner must confirm the text of the review and may make any changes she or he deems appropriate. The homeowner then assigns the contractor a review score out of 10. Assisted reviews receive the same scrutiny as other reviews and must follow our review guidelines.

We are completely satisfied with all staff that were involved with the blown cellulose insulation top-up for our house and garage attics. As seniors, we especially appreciated your sales representative not being aggressive when assessing and quoting on our insulation needs. After arriving in the morning , the installation team completed the job in approximately
four hours. They were courteous, efficient and cleaned up before leaving. The lead installer was very professional, highly organized and answered all our questions. We would use GNI for any future insulation needs, and would recommend your company to neighbors and friends.

Approximate cost of services:
$1,859.00
Was this review helpful?
Company Response

Thank you for leaving us such a kind review, we truly appreciate your business and will pass on your thoughtful words to the other crew members.
Thanks again!
The team at Great Northern Insulation

Private User
Private User
Private User reviews Hamilton, ON
10/10

Attic Top Up

Assisted Review

An assisted review is collected by a contractor on behalf of the homeowner after their work is completed. The homeowner must confirm the text of the review and may make any changes she or he deems appropriate. The homeowner then assigns the contractor a review score out of 10. Assisted reviews receive the same scrutiny as other reviews and must follow our review guidelines.

My experience with GNI was awesome! Every person (from salesperson to installer to staff) were professional and courteous.
The installers were prompt, friendly, cleaned up after themselves and did a great insulation job. They made it look easy - I was very impressed J

Last but not least, our house is so warm now! We have only had two frosty mornings this year and we have already noticed a difference.

We know that in the years ahead we will save money on heating and cooling costs with better insulation but the coziness we feel in our home now has made us wish we had spent the money on this years ago!

We will definitely recommend your company to all our friends!

Thank you!

Delia

Approximate cost of services:
$900.00
Was this review helpful?
Company Response

Thank you very much for leaving us such a kind and thorough review. We will make sure to pass on the message to our crew members! We are very grateful for your business and are happy that you are living comfortably.
The team at Great Northern Insulation

Private User
Private User
Private User reviews Hamilton, ON
8/10

Attic

Assisted Review

An assisted review is collected by a contractor on behalf of the homeowner after their work is completed. The homeowner must confirm the text of the review and may make any changes she or he deems appropriate. The homeowner then assigns the contractor a review score out of 10. Assisted reviews receive the same scrutiny as other reviews and must follow our review guidelines.

the sales person was professional, office staff was helpful ( when I needed to set a date up before I could accept the quote, as I was only off for a week ) the guys were prompt and efficient, my attic is full of pink fluffy stuff to the 18 inches as required, and clean up well you wouldn't even know
they were there.

The only thing I might ask is that I thought they would put a plywood
wall up in the attic entry to keep stuff in its place but instead it was card board. I was a little disappointed but wouldn't have called for that.

Approximate cost of services:
$1,000.00
Was this review helpful?
Company Response

Hi there,
We are glad we could be of service to you, however, we do apologize for any inconvenience we may have caused you.
The team at Great Northern Insulation

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.