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open now 7:00 am - 5:00 pm

Methods of Payment:

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  • Financing Available
For over 35 years, Great Northern Insulation has increased the comfort, energy efficiency, and durability of buildings and homes throughout Ontario. Our mission is to provide affordable solutions to each and every customer by reducing their energy costs, improving the acoustics of their living/working environment and addressing their unique fire protection requirements. We deliver these solutions with the most experienced staff in the industry. To achieve our goal of 100% customer satisfaction, we back all of our services with a satisfaction warranty, money back warranty, product warranty, and a sustainability warranty. We firmly stand by the statement that "There is more to insulating than just adding insulation". When selecting an insulation contractor, evaluate your options based on their experience, product expertise, customer service, and workmanship. Contact Great Northern Insulation today and experience what a true professional contractor can do for you! more...

Opening Hours

Monday
Tuesday
Wednesday
Thursday
Friday

Products and Services

  • Blown Loose Fill Attic Insulation,
  • Spray Foam Insulation,
  • Cellulose,
  • Batt Insulation,
  • Blown-in Wall Insulation,
  • Crawl Space Insulation,
    • Fireproofing,
    • Thermal Barrier,
    • Insulation Removal,
    • Airsealing,
    • Acoustical System,
    • Cladding,
    • Firestop & Smoke Seal,
    • 3M Window Film,
    • Vapour Barrier,
    • Building Envelope Consultation,
    • Blower Door Testing,
    • Fibreglass,
    • Thermal Imaging,
  • more...
  • less...

Brands Carried

  • BASF Walltite Eco,
  • Honeywell,
  • Owens Corning,
  • Gaco Western,
  • Winroc,
  • 3M,

Specialties

  • Highest Performing,
  • Environmentally Friendly Products & Services,
  • On Budget,
  • Installed Right,
  • One Source / Full Service,
  • On Time,

Languages Spoken

  • English,

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Ratings & Reviews - Great Northern Insulation

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    Feleisha R
    By

    Quick, professional, on time and job well done. Only suggestion would be for better clean up post job.

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    Merchant Reply April 24, 2017

    Thank you Feleisha for your review and for choosing Great Northern Insulation. With your feedback we can address the area's we need to improve on. Feel free to let us know if you have any more questions, or if there is anything further we can do for you

    Peter B
    By

    My installers Alex B & Justin D showed up on time. They were courteous, professional, and efficient. The work was completed quickly and they cleaned up the job site as best as they could prior to leaving. The crew took pride in their work. The GNI price was competitive. I took a look in my attic prior to their leaving and I amazed about how much insulation had been installed. I am looking forward to warm winters and cool summers. I would use GNI again and I recommend their services to others.

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    Merchant Reply March 7, 2017

    Hi Peter Thank you for the wonderful review. We really do have the best team around and we are happy you got to witness this first hand.. Thank you for choosing Great Northern Insulation

    lizzy10
    By

    Excellent service and reasonable prices. We will be using them again for our next insulation project.

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    Merchant Reply March 6, 2017

    HI Lizzy The team here at Great Northern Insulation is thrilled to hear such great feedback. We look forward to working with you again!

    Roy W
    By

    Entirely satisfied with GNI. Jasen and crew were courteous and professional. Also on time and clean. Good job.

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    Merchant Reply March 6, 2017

    HI Roy. I am so glad that everything went smoothly for you. Here at GNI, we like making sure that the process is as easy as possible for our customers, start to finish! Enjoy your newly insulated home!

    Ryan J
    By

    On time and courteous. Left the house in good shape after the job was done. A little bit difficult to get ahold of with questions before the job was started and no follow-up to check how satisfied I was but a good experience.

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    Merchant Reply March 6, 2017

    Hi Ryan We apologize that there were a few hiccups with answering question you had and no follow-up phone call after the work was completed, but super thrilled that you were happy with the crew! We hope that you enjoy your newly insulated home for many winters to come!

    paultm
    By

    Highly recommended

    Our service from Great Northern Insulation was excellent. Bill, Alex B ad Justin D were courteous, professional and friendly. They were extremely concerned with leaving our home as clean (if not cleaner!) than they found it. We have already noticed an improvement with the climate in our home - this was a great investment and we are thoroughly glad we chose Great Northern.

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    Merchant Reply March 6, 2017

    Hi Paul Thank you for the great review and mentioning how professional and friendly our crew members were. We are happy to hear you can already notice a improvement in your home. Thank you for choosing Great Northern Insulation

    bmcfarle
    By

    They did exactly what I expected them to do plus a little more. I paid the same price I was quoted and the job was completed on time as promised even tho I had to change the appointment twice.

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    Merchant Reply February 27, 2017

    Hi There thank you for the great review. We are happy to hear or team went over and above your expectations. We really do have the best crew around and we are happy you got to see that first hand. Thank you for choosing Great Northern Insulation.

    Catherinee
    By

    So impressed with this company and their staff. From the booking process to the implementation, the experience was positive, efficient and extremely professional. I would not hesitate to hire again

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    Merchant Reply February 22, 2017

    Thank you so much for your great review! I am so thrilled to hear that everything had gone smoothly! We really do have the best crew around and I am so happy that you got to see it first hand! Thank you so much for choosing Great Northern Insulation

    mholland
    By

    recently had my garage insulated an d the installers did a great job.

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    Merchant Reply February 22, 2017

    Hi there! Thank you so much for the great review! We are so thrilled to hear that you were happy with the work. Please do not hesitate to give us a call if there is anything else we can do for you! Thank you for choosing Great Northern Insulation!

    SueRatt
    By

    Sue R-The guys did a fantastic job. We had almost everything covered up for them to help. They got our rim joists and all of the basement walls done. Now our basement is warmer then main floor lol. We are doing main floor with roxull then we are doing demo upstairs and having great northern back to sprayfoam everything up there 😃

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    Merchant Reply February 22, 2017

    Thank you so much for the excellent review, Sue! We are so thrilled to hear that we did such a fantastic job on your home. We really do have the best crew around and I am glad to hear that you got to see it first hand. Thank you so much for choosing Great Northern Insulation! Looking forward to working with you again for you upstairs reno.

    Matthew W
    By

    they did a great job spray foaming my basement as well as insulating my attic and where nice and friendly.

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    Merchant Reply February 22, 2017

    Thank you so much for your kind words. We very much appreciate your business and are just as happy to hear how satisfied you were with the work completed at your home. Your compliment will be put into their files and will be beneficial for them come review time.

    Michelle B
    By

    Dave H, Ross and Jonathan came to my home to insulate. They got the job done quickly and did a great job of the walls and floors so far. They've been very flexible about working with us during our home renos, and they will be returning to insulate my attic once we're ready. We had a tiny issue come up and the supervisor Randy went above and beyond to make it right. Very please with the service that I've received so far.

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    Merchant Reply February 22, 2017

    Thank you so much for taking the time to leave a review. We will pass on the good word to the crew members and the GNI Team. We never get tired of hearing from our satisfied clients. Thanks again

    Shakster
    By

    This company is very professional and friendly. Excellent communication. I am very happy with the job they did.

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    Merchant Reply February 22, 2017

    Hi There! Thank you for the review. We are happy to hear that you are very happy with the job.. We never get tired of hearing from our satisfied clients Thank you for choosing Great Northern Insulation

    Justin R
    By

    We had our attic, basement and all our exterior walls insulated by gni. Jeff and Brandon did a terrific job. They were kind and courteous and were very respectable. House feels much warmer now. No complaints.

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    Merchant Reply February 22, 2017

    Thank you so much for leaving a review. I will make sure Jeff and Brandon know how happy you were. We never get tired of hearing from our satisfied clients and hope you will tell your friends and family about your experience

    AlannaG
    By

    Jeff and Brendan came to insulate the main walls of our home and the basement. They were very friendly, helpful, efficient and went out of their way to make it an easy experience for us.

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    Merchant Reply February 22, 2017

    Thank you so much for the great review! I am so thrilled to hear that you were so pleased with the job that we had completed for you. Here at GNI, we want to make sure that every customer is taken care of and that we will suggest what we think would be best for them. Thank you so much for choosing Great Northern Insulation!

    Neven G
    By

    Our basement is a lot warmer now. The gentlemen cleaned up afterwards. They also left a window open for circulation (fumes) before they left. We enjoy using our basement now. I recommend Great Northern for spray foaming basements.

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    Merchant Reply February 22, 2017

    GNI is built upon reputable service and that means going the extra distance required to keep your house in the best shape possible. Thank you so much for your kind words. We will make sure the crew members hear how pleased you are with their services..

    Bonsteel
    By

    Came when they said, cleaned up afterward and were gone in short order. Excellent job.

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    Merchant Reply February 22, 2017

    Hello there! Thank you so much for such a great review! I am so happy to hear that you got to witness first hand how great our team is! Here at GNI, we like to make sure that everything is done to our customers standards. Thank you so much for choosing Great Northern Insulation!

    Wendyloo99
    By

    Great company to deal with. Matt who did the quote was very knowledgable and answered all my questions. The two guys that came to do attic insulation were on time and did a good job. I've called them for another quote for the basement!!!

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    Merchant Reply February 22, 2017

    GNI is built upon reputable service and that means going the extra distance required to keep your house in the best shape possible. Thank you so much for your kind words. We will make sure Matt and the crew members hear how pleased you are with their services..

    TomCat992577
    By

    Another happy customer in London

    The overall experience was very good, the crew was polite & efficient. They cleaned up afterwards and the noise factor during the blown in attic insulation was not too bad at all. I did have to call the office to find out approximately when the crew was to arrive on the prearranged day and no one followed up to see if I was satisfied with the finished project. Two things that would be good additions for even greater customer service. Tom - London

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    Merchant Reply February 22, 2017

    Hi Tom! Thank you for the review and letting us know what areas we could improve on. Our customer feedback is always welcome. Thank you for choosing Great Northern Insulation

    Lucyloo1975
    By

    Very professional and hard working staff. Arrived right on time. All knew their business and were very helpful in answering my questions. Would definitely recommend this company.

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    Merchant Reply February 22, 2017

    hank you so much for the excellent review, Lucyloo! We are so thrilled to hear that we did such a fantastic job on your home. We really do have the best crew around and I am glad to hear that you got to see it first hand. Thank you so much for choosing Great Northern Insulation!

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