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Spray Foam Insulation Today, It's the Contractor's Favourite

December 11, 2014

Building materials and construction costs have all been on the increase in the last few years.At the same time, there is increasing consumer demand for energy efficiency.Ands that, of course, includes home building products, as well as construction techniques.Spray foam insulation has fast become the "cure-all" for all of the above.It has proven itself as the best multi-functional insulation product on the market today, with practically no similar products that can compare

On of the upsides of spray foam is that it can be applied in every place and in every application, including inside walls, above ceilings, under floors, around foundations, and throughout attics and crawl spaces.A proper application delivers better R-value than other insulation products (or combination of products), and provides a moisture management system that delivers its own specific benefits to the building and to the indoor air environment.

The spray foam installation uses specialized equipment and a customized spray applicator to apply the foam (also known as polyurethane foam).It presents as a thick liquid, expands to many times its volume, and quickly hardens into place.Spray foam has become the favorite of the professional contractor for good reason - one application does it all in one shot - it's an air barrier, a vapor barrier, and an excellent insulation insulator all in one.

With spray foam, there are no gaps or openings left unfilled after a proper install.Depending on where the application takes place, the foam blanket will envelop everything, including wall studs, plumbing pipes, HVAC ductwork, and electrical wiring.A comprehensive installation will also add structural strength to the area where it's applied.There are also "green" advantages with the product and the install, but these will vary depending on the extent of the project.

Spray foam is considered a premium product with premium benefits.The long-term energy savings are measurable; the consistency of indoor temperatures from one season to the next is noticeable; and the improved indoor environment is notable, with much less dust and pollen.The product and installation are known to be more expensive than other options, but there is nothing more cost effective, and nothing that delivers equivalent value over the long run.

One particular highlight of spray foam, especially when installed throughout an attic space, is the enhanced performance of HVAC equipment (heating, ventilation and air conditioning).The equipment operates much more efficiently, and quite often performs to the full potential that is was meant.Needless to say, this contributes to reduced energy consumption, and significant cost savings during the winter heating season and the summer cooling season.

Beyond its insulation features, spray foam also prevents mold growth, and restricts both insect and rodent infestations.And because the application acts as a seamless air barrier, it also cuts down on sound and noise, creating a quieter indoor environment throughout.Over the years, a good install will not shrink (like other products) and will therefore not lose any of its R-Value.Indeed, a spray foam application needs NO replacement, refilling or replenishment.

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

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Central Ontario

29 Ferndale Industrial Drive
Barrie, Ontario
Canada L4N 9V5

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Greater Toronto Area

2 Guided Court
Etobicoke, ON
M9V 4K6

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GTA East

103 North Port Road
Port Perry, Ontario
Canada L9L 1B2

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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


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HomeStars has ranked Great Northern Insulation as a company that goes above and beyond in every aspect of business for the year of 2021.

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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.

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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

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.


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The Home Efficiency Rebate Plus program offers up to $10,000 in home reno rebates – and Great Northern Insulation can pave the way.


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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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