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Properly Insulating the Basement Has Important Benefits

May 19, 2015

North American basements were originally allocated for additional storage space, the water heater and furnace, and maybe a small workbench area. As it turned out, the basement also became a dumping ground for everything that wouldn't comfortably fit upstairs in the house. We seem to be smarter today, realizing that the basement is actually very valuable space. For many of us, basements are fully finished - adding living space that is roomy and comfortable. Seasonal comfort, especially in the northern climes, is something entirely different. And most of us don't understand how essential it is to properly insulate the basement. It's as important as the rest of the house, and with just as many payoffs. A properly insulated basement space can reduce heating and cooling costs measurably; can better balance the heating and cooling cycles from one season to the next; and can avert the formation of mold and mildew. There are various insulation products that can be installed in the basement, although spray foam has quickly become the "product-of-choice" for professional contractors. Spray foam has been used in attics and roofs for decades, but has proven itself equally for the basement. For a number of reasons, basements have challenges that are unique to the space. As it turns out, spray foam insulation addresses those challenges much better than any other product. Spray foam does more in one single application that any other product on the market. It provides better R-Value insulation; it prevents moisture collection; and it effectively inhibits the movement of air. Most importantly, a proper spray foam application seals the basement walls completely - it prevents heat and cool loss; it allows for the HVAC unit to work more efficiently; and overall, it reduces energy consumption, and therefore reduces energy costs. In the basement, effective insulating is dependent on effective sealing. And to make sure the space is totally airtight, the most effective application is spray foam. An expert installer can seal up all the walls, the crawl spaces, and every little opening and hole. Even the hard-to-reach spaces can be sealed tight. Quite simply, there's no other insulation product, or mix of products that can compare with the effectiveness of a good spray foam install. Spray foam insulation is truly multi-purpose, which is why professional contractors are so impressed. It performs as an excellent air barrier, a superior moisture barrier, and the top-rated insulator. There is no requirement to pre-install a freestanding vapor barrier, which saves both product and labor costs. Finally, spray foam adds structural strength where its applied, adding to the many benefits when used for the basement walls. Although spray foam insulation is a more costly undertaking when it's compared to other applications, the benefits (both short-term and long-term) far outweigh the upfront cost. This is a home improvement investment: it lasts a lifetime; it requires no maintenance; and it never needs to be replaced or replenished. Professionally installed, spray foam insulation will deliver years of seasonal comfort, along with impressive energy cost savings.

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

Southwestern Ontario

7035 Industrial Drive
Comber, Ontario
Canada N0P 1J0

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

GTA East

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

TOLL FREE: 1-800-265-1914

GTA & 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


259 Campbell Street
Sarnia Ontario
Canada, N7T 2H3

TOLL FREE: 1-800-265-1914

Niagara Region

6260 Don Murie St
Niagara Falls, ON
L2G 0B4

TOLL FREE: 1-800-265-1914


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Best of 2017

From reputation to responsiveness, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thanks to everyone for the great ratings! 

HomeStars 2018

Best of 2018

For the second year in a row, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thank you again to everyone!

Homestars Best of 2019 Award

Best of 2019

For the third year in a row, HomeStars ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2020 Award

Best of 2020

For four years now, HomeStars has ranked Great Northern Insulation at better than 95% for customer satisfaction.

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

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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

Enenrgy 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).


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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.


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The Energy Conservation Program provides incentives of up to $1,600 to customers who achieve energy efficiency and fuel savings – and Great Northern Insulation can pave the way.


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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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