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Spray Foam Insulation : The Residential Insulation Solution

December 29, 2014

The short story on spray foam insulation is twofold - it delivers proven thermal protection (the insulating component) and it provides a superior air barrier (the sealing component).When properly installed, this is an application that provides a seamless blanket that totally envelops a given space, including irregular surfaces and uneven protrusions.It has quickly become the favorite insulating product of professional contractors, and has proven its effectiveness in new construction builds, renovation projects and retrofits alike.And it's all with good reason.

Beyond the insulating benefits, a spray foam application measurably improves air circulation throughout the premises, and contributes to better air quality and home comfort for occupants. Depending on the home, and the scope of the spray foam install, heating and cooling costs can be realistically reduced by as much as 50% annually.As well, residential HVAC equipment (heating, ventilating and air conditioning) is allowed to operate at full capacity and efficiency. And because the spray foam is such an effective sealant, a draft-free environment is created.

Residential spray foam insulation brings real-time, noticeable results to homeowners.Many routinely report reduced dust accumulation, and enjoy a practically "dust-free" environment.A good application also provides sound reduction - a sense of quiet inside the home, because the spray foam envelope actually absorbs sound.In addition, heating and cooling cycles are better balanced from one season to the next, with fewer occurrences of warm or cool zones.Finally, and likely the most important, is that energy bills are reduced within the range of 30% to 50%.

In residential applications, spray foam insulation can be used in every part of the home:inside wall cavities; for exterior foundations; in hard-to-reach crawl spaces; above ceilings (cathedral and flat); even around the doors and windows.It's a stable compound that won't deteriorate or decompose like many other insulation products.A spray foam application won't settle over time, and won't lose its R-value.In fact, this is a product that lasts a lifetime, without the need to replace or replenish.Reportedly, home re-sales are often higher with spray foam installed.

Project cost is always a concern for homeowners and spray foam insulation is no exception.It's acknowledged as a more costly project than other products or product combinations, but its also recognized as a good investment.A basic cost-benefit analysis will readily show that the benefits derived from a good install make the upfront cost worthwhile.Spray foam insulation is clearly a premium product with premium product features - it's particularly true when one assesses the long-term benefits and the inherent savings.

The popularity of spray foam insulation is huge.Annually, usage is growing at nearly 40%, and it's primarily because of the proven performance of the product.With more homeowners considering this option, it's critical for them to have a good understanding of the spray foam product and the installation process.Clearly, being knowledgeable and well-informed makes for better decision-making, and that includes choosing the right product for the job, and the right contractor to do the job.

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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