Great Northern Insulation

Home Inspection
ON
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Great Northern Insulation
Star Score
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94%

This is the average rating based on homeowner reviews.
This indicates how long it's been since the last review.
Low reputation means there has been review tampering or a company request to remove a review. This score is also impacted when we do not have enough information i.e: low number of reviews.
How well a company responds to Service Requests and Reviews.
Reviews by rating (past 12 months)
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Best of the Best '22 
Best of Award '22 winner 11 timesBest of the Best '22 Best of Award '22winner 11 times
Giving Back Award winnerGiving Back Awardwinner

Reviews for Great Northern Insulation

Average customer rating:
9.5 10 (880 reviews)

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KG
KG
1 review Windsor, ON
10/10

Addition insulation

Great job! Very satisfied! Crew showed up, were very informative about the process and then proceeded to protect everything from overspray.
Job went smoothly due to the organization that the spray crew used throughout the job.
Neat, friendly and courteous crew.
No complaints about their work.
Thank GNI for help with our project!

Approximate cost of services:
$8,000.00
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Company Response

Thank you for leaving us such a kind review KG, we truly appreciate your business.

Carla & Michael Port Colborne
Carla & Michael Port Colborne
0 reviews Port Colborne, ON
10/10

Home Insulation

We just had our house insulated by Northern Insulation and we couldn't be happier.Tiffany and Sabrina were always on time, very friendly and left the place clean every night. I would differently recommend Northern Insulation and especially these two great women.

Approximate cost of services:
$4,000.00
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Company Response

Hi Carla & Michael, 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.

Private User
Private User
Private User reviews Niagara Falls, ON
10/10

Basement / attic servicing

Two female employees came in, worked quickly and cleaned up. No fuss or problems. Highly recommended for any upgrades or house improvements in a private home. Can almost feel the warmth and haven't had to use the furnace yet.

Approximate cost of services:
$750.00
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Company Response

Thank you so much for your review, we’ll make sure to pass along your kind words to the team here at Great Northern Insulation. We are happy your home is more comfortable now.

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

Attic Insulation

Enjoyed the experience from start to finish. Great company. The are prompt, respectful and polite. Very good work from 2 Chris’s and Matt.
I would recommend them without hesitation.

Joanne T

Approximate cost of services:
$1.00
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Company Response

Thank you very much Joanne for choosing the team at Great Northern Insulation, and for taking the time to leave us such a great review. We are very grateful for your business.
The team at Great Northern Insulation

Mooshead Construction Corp
Mooshead Construction Corp
4 reviews Toronto, ON
10/10

Spray Foam

Work with Great Northern on a couple of projects. Both personally and professionally. They are always very professional. From the sales and administration, to the crew on-site. Very impressive operation. I appreciate the hardwork and quality they deliver.

Approximate cost of services:
$8,000.00
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Company Response

Thank you very much for choosing the team at Great Northern Insulation, and for taking the time to leave us such a great review. We are very grateful for your business.
The team at Great Northern Insulation

Karen in Newmarket/Holland Landing
Karen in Newmarket/Holland Landing
2 reviews Newmarket, ON
10/10

Insulation Projects

Great Northern Insulation was very helpful in regard to assisting me with my insulation needs in our new home. We needed help removing some old insulation to prepare for water-proofing in our basement. They did a great job with that with very little notice. They returned to spray foam our joists and then also added insulation to our attic to bring it up to R60. They were reasonably priced and the team that worked in our home was beyond all expectations in regard to friendliness and professional. Thank you!

Approximate cost of services:
$5,000.00
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Company Response

Wow, thank you for such a thoughtful and excellent review Karen. We are truly pleased to hear how happy you are. Thanks again for choosing Great Northern Insulation.
The team at Great Northern Insulation

John in London
John in London
0 reviews London, ON
10/10

Awesome people - awesome work!

About a month ago, I had the attic filled with cellulose insulation. The workers were on time, courteous, efficient and friendly.

Today, a crew arrived and insulated the basement of my 1917-built house. Once more, right on time, and excellent work with friendly service. All garbage was cleared away and I was left with a brand-new, insulated basement.

I am extremely pleased with your company's services, and won't hesitate to recommend you to friends and family who may need insulation.

Approximate cost of services:
$0.00
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Company Response

Thank you for leaving us such a kind review John, 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

John
John
0 reviews Perth, ON
10/10

Spray Foam Insulation for Garage and Loft

Extremely impressed from beginning to end, with the work done by Great Northern Insulation. Everything went smoothly, Jeffrey, Zachary and Oneil were very polite and professional, wrapping everything in plastic prior to starting and cleaning all the overspray afterwards. What a great team. My only regret is that I wish I had known about this company prior to spray foaming my new home. Definitely recommend!

Approximate cost of services:
$10,000.00
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Company Response

Thank you John 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

Rpai Toronto
Rpai Toronto
2 reviews Toronto, ON
10/10

Thermal barrier

Really nice people to work with and the the pricing was fair. Some other contractors were giving crazy quotes. The workers that came in were really nice. The work was done in a timely manner

Approximate cost of services:
$2,500.00
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Company Response

Hi there R.P,
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 Ottawa, ON
10/10

Attic + Basement Insulation

Richard was very understanding, and flexible as we worked out our quotes. The contractors that came in, were very informative and accommodating to our questions and requests. They were incredibly professional, and ensured that we were informed with the status of our house.

Approximate cost of services:
$4,000.00
Was this review helpful?
Company Response

Thank you very much for choosing the team at Great Northern Insulation, and for taking the time to leave us such a great review. We are very grateful for your business.
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.