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The Fundamentals of Basement Insulation

January 15, 2016

Unlike years gone by, when basements were purely storage spaces, today's basements are functional and usable living spaces. And it's primarily the basement insulation that allows for the comfort and livability of the space. Indeed, many basements have become fully usable - as extra bedrooms; as home-based offices; even as completely self contained in-law suites. Living comfort in the basement is a result of having the space properly insulated. High quality insulation, professionally installed, will impact the comfort level during both winter and summer. Even more important - a properly insulated basement improves energy efficiency throughout the home, and thus reduces the home's heating and cooling bills all year. For the typical homeowner, insulating the basement is mostly about keeping the space warm in winter and cool in summer. But for a professional contractor, it's vital that the basement be insulated to the same degree as the rest of the house. Basement insulation is one of those home improvement projects that actually pays for itself in significant yearly utility savings. Managed professionally, the long term benefits of basement insulation are impressive, especially when a high quality product is being installed. With a quality insulation product, R-Values are dramatically improved; undesirable airflow is prevented; and overall, moisture is prevented from accumulating. Big picture, home comfort and energy efficiency are enhanced measurably.

A worthwhile home improvement investment

Basement insulation delivers measurable value. The annual savings on utilities will "pay down" the project cost in a few short years.

Quality insulation will deliver the best results

Installing quality insulation, along with superior workmanship will make for better long term outcomes. - and that translates into savings.

A quality install abides by the building code

A reliable contractor will advise the homeowner on the requirements of the building code. Good contractors don't take any shortcuts.

Spray Polyurethane Foam - the best product

Today, the professionals are recommending Spray Polyurethane Foam as the ideal install for basements. One application does it all.

Spray Polyurethane Foam for the basement

Whether for the basement floor or the basement walls, an SPF installation provides better sealing and insulation than anything.

SPF can do it all with one expert application

Spray Polyurethane Foam does it all - it creates an air barrier and vapor barrier, while providing the highest R-Value levels.

Spray Polyurethane Foam is a costly install

SPF is a premium product, and may not suit all budgets. However, product performance far exceeds any other single product.

The "hybrid" install - an excellent option

A combination of Spray Polyurethane Foam and fiberglass insulation with great results and a cost effective project budget. Overall, basement insulation does best with a professional approach. It's the experts who know the ins and outs of the products, and the complexities of the installations. And while there are obvious savings with a DIY approach, the very best outcomes are those derived with a professional touch. Indeed, the long term savings with a well managed basement insulation project can "pay down" the initial investment very quickly.

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

Trusted for Over 40 Years

Over 40 Years in Business

At GNI, we service your project with the most experienced staff in the industry. Ongoing professional development is an obsession at GNI and we will not compromise at any level to bring to our customers the very best Installers, Sales Representatives, Customer Care Personnel, Field Superintendents, Estimating and Technical Support to your project.

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

January, 2021 regulatory phaseout of hydrofluorocarbons (HFCs) with the introduction of WALLTITE CM01. Using hydrofluorolefins (HFOs) with lower global warming potential (GWP) compared to HFCs, WALLTITE CM01 is the next generation of spray foam insulation.



Heatlok® Soya HFOTM leverages Honeywell’s latest Solstice® Liquid Blowing Agent technology. This new hydrofluoroolefin (HFO) blowing agent is the most environmentally conscious blowing agent produced to date, with a zero ozone depletion potential (ODP) and a global warming potential (GWP) of 1, which is more than two orders of magnitude (99.9%) lower than HFCs used in this industry.


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).

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?

Climatizer Cellulose


CLIMATIZER PLUS cellulose insulation is manufactured from a minimum of 85% locally-sourced post-consumer recycled newsprint. Non-toxic additives are applied to the uniquely fiberized paper generating a building material with superior thermal and acoustic properties, as well as exceptional resistance to fire, moisture, mould and pests.

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