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Why Spray Foam Insulation Has Become the Contractor's Favourite

February 27, 2015

The use of spray foam insulation has grown dramatically in the last decade, mainly because customers are satisfied with the results. It's a unique product and a specialized install, so project success is essential. But with a product like spray foam, an experienced contractor can deliver positive results for both the short term and long term. The truth is, there isn't much debate about the superior quality of spray foam or the efficacy of the application. So it's no wonder that the product has become a favorite of so many contractors. New homebuilders, general contractors and independent renovators are all choosing spray foam insulation as their product-of-choice. And it applies equally to new builds, renovations, and retrofitting. For both contractor and customer, a spray foam installation delivers great results - the outcomes are as promised; the manufacturer warrantee backs the product; and the installer guarantees the application. The main thing is that it all works, and there's no other insulation product on the market that can provide as many benefits. Regardless of project size, spray foam insulation can REDUCE ENERGY CONSUMPTION, and that translates into energy savings and cost savings around the year. In fact, a thorough and comprehensive spray foam application in a typical attic can reduce heating and cooling costs by up to 50%. (Spray foam insulation also enhances the resale value of the property.) An expert spray foam application also RESTRICTS AIR INFILTRATION. This is key for any insulation to be effective. As well, the spray foam firmly adheres to any surface, and creates an impervious air barrier and moisture barrier simultaneously. In short, it's a contractor's delight - a multipurpose application that delivers desirable results for the customer. Spray foam insulation DOES NOT DETERIORATE. The application doesn't settle or shrink, and requires no "topping up" (like so many other products). Also, it doesn't lose its R-Value over the long run, and maintains its superior insulating value for a lifetime. This is an install that a contractor can expedite successfully and ensure customer satisfaction. Because spray foam is impervious to moisture, typical air-laden MOISTURE IS CONTROLLED. As a result, condensation is prevented from developing; mold and mildew are inhibited; and moisture doesn't penetrate or deteriorate the insulation. It contributes to a "system" that enhances the indoor air environment and provides home comfort at the same time. One of the premier benefits of spray foam is its SUPERIOR R-VALUE. No other product can compare with the high R-Values, and especially in the climate zones that experience extreme temperatures. And along with superior R-Values come energy savings and utility savings around the year. Long term, the dollar savings make a project of this type well worthwhile. Today, many customers are asking for products that are ECO-FRIENDLY. When properly installed according to the manufacturer's specifications, spray foam insulation has some eco-friendly attributes: there are no carbon dioxide emissions; HVAC exhausts during heating and cool cycles are reduced; and there is no ozone-depleting effect during or after the install. Spray foam insulation is a win-win. Homeowners are delighted with short and long-term outcomes, and contractors are delighted to deliver product results that are so multi-faceted.

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


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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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