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With Spray Foam Insulation, It's Best To Be Well Informed

February 09, 2017

With so many insulation contractors out there, and countless renovators installing spray foam, it's sometimes difficult to separate the professionals from the impostors. Discovering bad work and substandard installation after the fact can be costly and stressful. The best thing is to avoid it all in advance by choosing installers that are knowledgeable, competent, and reputable. Clearly, it's not a good idea to choose an insulation contractor based only on price. In particular, spray foam requires a degree of experience and expertise with the product and installation. The chemical compounds need special handling and installation requires proficiency. This isn't the right time for a DIY effort, or the time for an untrained installer to take on the project. Reputable installers offer their customers a manufacturer's product warranty to assure long-term performance. As well, they offer a company guarantee to assure workmanship. Finally, for the benefit of the consumer, industry associations drive their professionals to deliver complete customer satisfaction on every job, along with the highest standards of job performance. For the consumer, it's best to be well informed. This will make for a good choice in an installer, and will set the stage for good decision making from start to finish. The truth is, even with an excellent product like spray foam insulation, optimum performance can only be assured with a superior installation. And this is where a professional approach has many advantages. Expertly applied, spray foam insulation provides more benefits than other insulation options. In the average home, R-Values are dramatically boosted, and utility costs (heating/cooling) are dramatically reduced. Spray foam also controls air movement and moisture collection, leading to improved air circulation. Best of all, everything is accomplished with a single install. Spray foam products may not suit every homeowner's budget. And cost comparing with other product options is not always fitting because of the many variables. Spray foam delivers better results than other products and will pay for itself with long years of performance. Applications generally last for a lifetime, and there is never a need to replace or replenish the installation. While it's true that spray foam insulation is a big investment, the "pay down" period is actually quite reasonable (from 2 to 7 years). Simply put, the annual savings on heating and cooling will easily make the investment worthwhile. But it absolutely has to be done professionally - having to initiate a re-work will be an expensive proposition, and likely a very stressful experience. Professional installers also do the job right the first time. They follow construction and building codes. They are mindful of local by-laws. And they install everything according to manufacturer specifications. Most importantly, professionals do not take unnecessary installation shortcuts and will not compromise the integrity of the installation based on budget considerations. With spray foam products, expert installation can't be overstated. The risks of a shoddy job are enough to dissuade any homeowner. But at the same time, an expert install will assure years of performance and excellent long-term value.

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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