cory.visser, Scarborough
Rating: 5 out of 5
Answer from pro:
Thank you very much for your 5-star review!
Reply created 30 Jan 2026Great Northern Insulation
Rating: 4.8 out of 5
Great Northern Insulation reviews (934)
Review from cory.visser, Scarborough Review left on 2 Dec 2025Review from A, Oshawa A, Oshawa
Review left on 29 Jul 2025Rating: 5 out of 5Answer from pro:
Thank you very much for your 5-star review!
Reply created 12 Sep 2025Review from Jessica, Burlington, Ontario Jessica, Burlington, Ontario
Review left on 16 Jul 2025Rating: 5 out of 5Install Spray Foam InsulationSmooth and efficient. 10/10Answer from pro:
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.
Reply created 12 Sep 2025Review from HomeOwner HomeOwner
Review left on 7 Jan 2025Rating: 5 out of 5Attic insulation, Basement insulation, weather stripping door
Great Northern Insulation did an AMAZING Job in my home! From the moment that Dan contacted me I was treated with the utmost expertise and respect. He was very knowledgeable in providing me with information regarding my attic and basement insulation, as well as the weather stripping on my door. His team of Tim, Michael and AJ arrived on time and were very diligent in the set up of the equipment and material to do the job. They were efficient, thorough, knowledgeable and respectful! They were mindful to set up and do the job without any damage to the property as well as cleaning, putting back everything in its place and vacuuming my home! Great job Dan, Tim, Michael and AJ! Great Northern Insulation is a GREAT and Reputable Company!Answer from pro:
Thank you very much for choosing the team at Great Northern Insulation, and for taking the time to share your feedback with us. It means so much when our best customers share their experiences. We are very grateful for your business, and we'll be sure to pass along your kind words to the team.
Reply created 29 Jan 2025Review from Customer of Great Northern Insulation Customer of Great Northern Insulation
Review left on 14 Aug 2024Rating: 5 out of 5Attic insulation
Gracie and Harpreet did a great job and were very professional, even making sure any mess was completely cleaned upAnswer from pro:
Thank you so much for this 10-star review. We really appreciate you being our customer and are glad we were able to meet your expectations!
Reply created 6 Sep 2024Review from Customer of Great Northern Insulation Customer of Great Northern Insulation
Review left on 12 Aug 2024Rating: 5 out of 5Insulation
Cleon and Anthony were here today and they did a great job! Professional, courteous, efficient and friendly. They cleaned up after and the insulation looks great! Thank you!!Answer from pro:
Thank you very much for your thoughtful review. We are so glad you are happy with our crew’s work! We’ll be sure to pass along your note to our team. Thanks again for choosing the team at Great Northern Insulation.
Reply created 6 Sep 2024Review from HomeOwner HomeOwner
Review left on 2 Aug 2024Rating: 4 out of 5Attic Insulation has made this summer bearable
I had an asbestos scare and I felt terrible for the men who noticed it in case they were exposed, however, they were very professional and came back once the coast was clear! Thanks Manpreet, Navjot, and Parminder for your fine service and excellent efficiency with my attic insulation job on one of the hottest days of the summer. 32 degrees! We are all cooler here now. NadineAnswer from pro:
Thank you for leaving us such a kind review Nadine, we truly appreciate your business.
Reply created 7 Aug 2024Review from Kris, Burlington, Ontario Kris, Burlington, Ontario
Review left on 16 Jun 2024Rating: 5 out of 5Install Attic InsulationGreat experience from start to finish. Provided photos of the space and walked through all possible options. Within 24 hours of accept quote , appointment was scheduled on a day that worked for me. Install team did a great job in set up and clean up.Answer from pro:
Thank you very much Kris for choosing the team at Great Northern Insulation, and for taking the time to share your feedback with us. It means so much when our best customers share their experiences. We are very grateful for your business, and we'll be sure to pass along your kind words to the team.
Reply created 4 Jul 2024Review from Customer of Great Northern Insulation Customer of Great Northern Insulation
Review left on 28 Feb 2024Rating: 5 out of 5Additional attic insulation
I was very pleased with the service provided by Great Northern Insulation in Nepean, ON. The service providers, Manpreet and Charnjit, were efficient, knowledgeable, tidy, and did an overall great job. Likewise, the sales rep, Harley, was knowledgeable and booked things quickly. I would definitely recommend GNI Nepean.Answer from pro:
Thank you for taking the time to leave us a review! We're thrilled that you had such a great experience with our installers at our Nepean branch. We hope you notice an improvement in your home comfort and energy efficiency!
Reply created 18 Mar 2024Review from Customer of Great Northern Insulation Customer of Great Northern Insulation
Review left on 12 Feb 2024Rating: 2 out of 5Poor Customer Service
I chose Great Northern based on the reviews I had seen online. Unfortunately, we made a mistake - this is the only contractor I have ever hired that I regret choosing. The customer service is terrible. It seems to be a big organization that works in silos. The only bright spot was the sales representative - he was knowledgeable and thorough.Answer from pro:
Thank you for taking the time to review our services, despite the fact that overall we did not meet your expectations. We'd like to investigate your issues further but are unable to do so without a customer name or contact information - if we are able to assist, please feel free to contact us at customerservice@gni.ca or 1-800-265-1914.
Reply created 18 Mar 2024