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Charitable Events

Great Northern Insulation is proud to participate in charitable events whenever possible. Below are some of our highlights of the last few years!

The Great Holiday Food Drive 2022

For the Holiday 2022 season, all companies under GNI Management Group Inc. are aiming to raise over 1,500 items of non-perishable food and toiletry items to donate to local food banks across Ontario and Montreal.

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Women Build November 2019

In November 2019, Great Northern Insulation partnered with BASF to participate in a Habitat Women Build day supporting Habitat for Humanity Heartland Ontario.

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Truck Convoy for Special Olympics 2019

GNI participates in the 15th Annual Paris Truck Convoy for the Special Olympics, an event that has raised over $1 million for Special Olympics Ontario in its 15 years of operation.

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Heart & Stroke Big Bike 2019

Great Northern Insulation's Woodstock branch participated in the 2019 Big Bike Event in support of research; a push to create a better future for women's heart and brain health.

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Habitat for Humanity Women Build

Great Northern Women is a team comprised of ten women from the Great Northern Insulation Woodstock branch. In January 2019 they helped build Brianne and Brayden their new home!

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Heart & Stroke Big Bike 2018

In May 2018, GNI employees from the Woodstock branch raised $3,705 in support of the Heart & Stroke Foundation, shattering their team goal of $1,500.

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Woodstock Hike For Hospice 2017

In September 2017, employees of the Great Northern Insulation Woodstock branch participated in the 2017 Hike For Hospice at Roth Park in Woostock. The event raised over $76,000 for the VON Sakura House.

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United Way Day of Caring 2017

In June 2017, ladies from the Great Northern Insulation Woodstock branch - and Tom - participated in the Oxford United Way Day of Caring by helping to complete projects with local non-profit organizations.

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2017 Udodge Tournament for United Way Oxford

In April 2017, employees from the Great Northern Insulation Woodstock branch participated in the 2017 Udodge Tournament for United Way Oxford. The GNI Ballers dodged, ducked, dipped, dodged, and dove their way to helping United Way Oxford raise over $17,000 for the community and local programs.

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Western Ontario

935 Keyes Drive
Woodstock, Ontario
Canada N4V 1C3

Phone: 1-800-265-1914

Fax: (519) 539-7946
TOLL FREE: 1-800-265-1914

Muskoka, Haliburton, Northern Ontario

1027 Elwell Park Road
Gravenhurst, Ontario
Canada P1P 1R1

TOLL FREE: 1-800-265-1914

Central Ontario

29 Ferndale Industrial Drive
Barrie, Ontario
Canada L4N 9V5

TOLL FREE: 1-800-265-1914

Greater Toronto Area

2 Guided Court
Etobicoke, ON
M9V 4K6

TOLL FREE: 1-800-265-1914

GTA East

103 North Port Road
Port Perry, Ontario
Canada L9L 1B2

TOLL FREE: 1-800-265-1914

South Central Ontario

450 Industrial Dr,
Toronto (Milton), Ontario
Canada L9T 5A6

TOLL FREE: 1-800-265-1914

Eastern Ontario

1035 Moodie Dr #1,
Nepean, ON
K2R 1H4

TOLL FREE: 1-800-265-1914

Niagara Region

25 Lincoln Ave
St. Catharines, ON
L2P 2C7

TOLL FREE: 1-800-265-1914


Great Northern Insulation - Better Business Bureau Profile.

Homestars Best of 2021 Award

Best of 2021

HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2021.

Homestars Best of 2022 Award

Best of 2022

HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2022.


GNI is the Authorized & Trusted Insulation and Air Sealing Installer for Lowe’s

Energy Savers

Energy Saving

Energy saving and energy efficiency is easier than one might think. Great Northern Insulation helps to identify performance issues, while taking advantage of improvement opportunities.

100% Canadian

100% Canadian

Great Northern Insulation is recognized as Canada's largest full-service insulation contractor. GNI is 100% Canadian owned, proudly serving Ontario customers since 1980.

Foam Masters

Do it right the first time
- with foam mastersTM

WALLTITE® ECO™ is a high-performance system, professionally installed by certified and approved specialists. Its C.C.M.C. approved (Canadian Construction Materials Centre) - with product quality guaranteed - and with installation by highly trained experts with the technical know-how to do the job right, the first time.

Insulthane Extreme

Insulthane® Extreme

For the ultimate in high performance spray foam insulation, Insulthane® Extreme is the professional choice for residential, commercial, and industrial application. With improved thermal performance over other products, Insulthane® Extreme has an exceptionally low Global Warming Potential (GWP). Considered environmentally friendly, this next generation spray foam insulation is non-ozone depleting, and exceeds specifications of other HFC product alternatives.


3MTM products.
Quality + Performance = Savings

3MTM energy-saving products are designed to keep warm air in, and cold air out, while keeping energy bills down. Products optimize energy efficiency in buildings and homes; improve indoor environment for occupants; and effect the reduction of seasonal energy costs. 3M products are authorized for LEED credits (Leadership in Energy/Environmental Design).


Baeumler ApprovedTM
Professional, Certified and Insured

Baeumler ApprovedTM gives you peace of mind when connecting with contractors, trades and home service providers. All Baeumler Approved members have demonstrated high quality work for customers and other trade professionals. Members must also have Workers Compensation, liability insurance of at least $1,000,000 and prove professional certification.

Holmes and Holmes

Holmes and Holmes


Mike Holmes and his son Mike Jr. (MJ) convert MJ’s bachelor bungalow into a two-storey home for MJ and his girlfriend Lisa. Choosing the newest materials and build techniques, the father and son team follow Mike’s famous motto – “Make it right.” The show can be watched on HGTV and DIY Network.


Enbridge Incentives

The Home Efficiency Rebate Plus program offers up to $10,000 in home reno rebates – and Great Northern Insulation can pave the way.


Great Northern Insulation proudly abides by a renovation-specific Code of Conduct set by RenoMark™.


We are Verified & Bonded by eRenovate. When you choose to proceed with our services through their platform, you receive the gaurantees set forth through their program.

As Seen on Love It or List It

The GNI crew have been featured installing insulation on Love It or List It - have you seen our logo in an episode?

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