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Don't Underestimate the Importance of Insulating the Basement

March 17, 2015

Years ago, the basement was a leftover space for the furnace and water heater; for storing suitcases; and for dumping everything we didn't want upstairs. But today, things are different. Basement space is valuable - and finishing that space can add a substantial amount of living room to the home. At the same time, the space has to be comfortable. The big question is how to make it comfortable. Most people don't give it much thought, but basements should be as well insulated as any other part of the house. And the fundamentals are the same - it's a space that should be well sealed, well insulated and well ventilated. A well-insulated basement will reduce the costs of heating and cooling; will balance out heating/cooling levels throughout the house; and will almost certainly prevent mold from forming. In recent years, spray foam insulation has gained a lot of popularity as an insulating product. It has become a product-of-choice for the attic, the roof, and even the walls inside the house. As it turns out, it's an excellent option for the basement as well. Basements have unique challenges, and a spray foam application provides effective solutions - in fact, better than any other product available on the market. In one application, spray foam does it all - it impedes the accumulation of moisture; it restricts the movement of air; and it provides better thermal insulation (R-Value) than any other insulation product. Spray foam also seals a space better than any other application - it therefore prevents heat loss, contributes to higher efficiency of the HVAC unit, and at the end of the day, significantly reduces the cost of energy. Effectively insulating the basement also means effectively sealing up the space. It's all about making the space completely airtight, and no other application does this more efficiently than spray foam. With an expert installation, spray foam seals up a space completely - every little hole, gap and crack is sealed, including all of the hard-to-access spaces. There's no other insulation product that can accomplish this. Today, spray foam insulation is the "go-to" product for the professional insulation contractor. Quite simply, it is the best air barrier, the best moisture barrier, and the best insulator...all in one application. In fact, there is no need to install a separate vapor barrier. A professional spray foam install will also add structural strength to the walls of the basement - it's just another added benefit of the application. The beauty of spray foam insulation is that the benefits are noticeable. Overall air circulation is improved - the HVAC equipment operates better - indoor comfort is enhanced - and energy usage is better balanced. And when heating and cooling are better balanced, the cost savings are apparent. For a typical homeowner, the annual savings are probably enough reason to insulate with spray foam. Spray foam insulation is known to be more costly than other insulation products. However, the long-term benefits outweigh the initial cost. It's an application that lasts a lifetime, its maintenance free, and it doesn't need to be replenished.

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


Great Northern Insulation - Better Business Bureau Profile.


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

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).


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 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.


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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