Great Northern Insulation
4.8/5
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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... See more text

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,
    • Insulation Consultants,
  • more...
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Brands Carried

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

Specialties

  • Insulation Services,
  • Insulation Consultants,
  • Highest Performing,
  • Environmentally Friendly Products & Services,
  • On Budget,
  • Installed Right,
    • One Source / Full Service,
    • On Time,
  • more...
  • less...

Languages Spoken

  • English,
Useful Information

Opening Hours *Holiday hours

Monday
Tuesday
Wednesday
Thursday
Friday
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Methods of Payment:

  • Financing Available

Ratings & Reviews - Great Northern Insulation

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4.8/5
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    park2751
    By

    Great service and very happy with the results, we already are seeing the advantage of having it done.

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    alex0798
    By

    I used GNI for both attic insulation and basement spray foam insulation. After an issue with wildlife in the attic (rescheduled at no cost to me) both the attic and basement jobs went well. Very easy to deal with, price was right and communication was great.

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    lisa8301226133
    By

    We used them for topping up insulation for 2 homes. In both instances, they were professional from the estimate meeting to the actual work. We will use them again without hesitation.

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    d_Ave
    By

    Experienced sales staff and friendly work crew. Job was completed quickly, thoroughly cleaned up and looks great!

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    avta8764
    By

    I had GNI come and add insulation to my attic. They did a great job from the initial consultation to the final installation. Would highly recommend them.

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