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Why Spray Foam Insulation?

November 10, 2014

It seems counter-intuitive today, but many years ago we had little problem living in a home that was overly drafty and poorly insulated.Today, things are quite different.Besides the fact that energy costs are steeper than ever, our attitudes have changed about energy conservation and energy efficiency.All this applies equally to warm climate zones, damp climate zones, and cold climate zones.We all just want to be comfortable in our indoor environments.

The bottom line when talking about energy consumption, energy conservation, and energy efficiency is INSULATION.And practically every expert in the field will agree that a so-called "healthy house" is one that is well sealed, well insulated and well ventilated.When indoor air circulation and moisture movement are well managed, the result is an indoor environment that is balanced and comfortable - a win-win.

A homeowner knows exactly when the insulation is inadequate.Walls are cold.Heating costs are high.Windows are drafty.And heating cycles are uneven.For the summer months just flip all those deficiencies once over.On the other hand, effective insulating materials, along with proper installation techniques can do away with all of the above, while delivering an enhanced level of indoor comfort, and substantially reduced energy costs.

As a starting point, the basics are important to understand.The effectiveness of insulation is measured in R-VALUE (the metric equivalent is RSI VALUE).The higher the R-value rating - the more resistance there is to air movement.With this kind of universal classification, building codes can specify minimum R-value requirements for various applications, including usage in new construction, retrofitting projects, and renovations.

When it comes to product options, industry experts everywhere agree that there is no better insulating material than spray foam insulation.Nothing seals better, and nothing prevents air and moisture movement better.The savings on seasonal utility bills are significant; mold and airborne pollutants are eliminated; and the improved indoor air environment contributes to better health and wellbeing for residents.

Spray foam insulation, commonly known as polyurethane foam, has become the product-of-choice for professionals in the insulation industry.The compound is sprayed directly into a roof, wall or floor cavity, and blankets the area like no other product.It presents as a thick liquid - quickly expands as it is applied - and just as quickly hardens into a dense layer of foam insulation.The final coating acts simultaneously as an air and moisture barrier.

Spray foam insulation will deliver the highest R-value rating of any insulation product on the market.And when expertly installed, the application leaves no gaps, cracks, or crevices - even those hard-to-reach spaces are filled, covered and sealed.In many cases, and with an energy-efficient furnace, a homeowner can save up to 40% on energy costs when the home is outfitted with spray foam insulation.

Overall, spray foam insulation is somewhat more costly than other products.But from a cost-benefit perspective, the cost makes sense.It's a premium product that will deliver premium benefits.The installation will last a lifetime.There is no need for replenishment.And the "pay-back" period is between 2 and 7 years.This is truly a good investment for the home, especially when thinking about the long term.

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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