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With Basement Insulation, it's Important to do it Right the First Time

March 20, 2016

Basements usually account for a significant amount of heat loss, particularly when the space has been poorly insulated. It's because basement walls are expansive, and often un-insulated above and below grade. Worse, there's undesirable air leakage, whether it's through basement windows or through gaps and cracks in the foundation. The good news is that there's plenty of room for improvement. In many situations, basement insulation can be combined with general repairs and renovations, or waterproofing the outside of the home, or when finishing the basement itself. Any good insulation professional will recommend a proper assessment of the basement prior to doing any insulating work. Water leaks, for example, must absolutely be corrected. Whether minor or major, water leaks must be addressed and remedied in order to prevent future calamity. Dampness is also a concern - high levels of interior moisture can easily compromise the integrity of installed insulation. Cracks and crevices in the foundation may seem innocuous, but they allow air and moisture into the building structure - both of these make trouble for an insulated space. With basements, there is always debate about insulating the outside or inside. Here again, a good contractor can advise what's best, based on the conditions, and the project budget. Clearly, in an existing home, there are advantages to insulating from the inside. Work can be done regardless of weather, the final install can be part of a bigger basement renovation, and for the most part, the installation can be uninterrupted. What's most important is to do it right the first time, preferably with a professional, using a high quality insulation product, and expediting a quality installation. Taking into consideration the issues and concerns of a basement, the important consideration is what product to use. Many professionals are recommending Spray Polyurethane Foam as the all-purpose product and installation. They are opting for SPF because it can achieve so much with one application, and in the basement, this is particularly relevant. SPF creates a space that is completely airtight. It stops both air movement and air leakage. And finally, it installs the highest R-Value rating per installed inch. In short, it delivers far more benefits than other products. Spray Polyurethane Foam is widely regarded as premium insulation. It's a costly install, and may not always suit a homeowner's project budget. As an alternative, Great Northern Insulation has customized a "hybrid installation" that delivers excellent results while remaining cost-effective. It's an installation that combines Spray Polyurethane Foam with an additional insulation product in one application. The SPF provides the sealing and insulation essential for the basement, while the additional insulation product provides added insulation and a cost-effective component. The results achieved with the "hybrid installation" allow for measurable cost savings on winter and summer utilities. And with a well-insulated basement, the long-term annual savings make for a reasonable "payback" period. It all makes for an original project investment that is worthwhile, and that will suit most homeowner budgets.

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

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

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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.

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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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