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Going Green with Eco-Friendly Spray Foam Insulation

September 25, 2017

Throughout the industry, spray foam insulation is being recognized as a much better option for maximizing energy efficiency and enhancing indoor comfort. The product is sometimes referred to as Spray Polyurethane Foam Insulation, and today it’s being used in new home construction, general home renovations, and specific retrofit projects. Best of all, contractors can now offer a green approach with eco-friendly spray foam insulation.

eco-friendly green spray foam gni Spray foam insulation can be effectively installed in practically every part of the home – from basements, to attics, to garages, to exterior walls. It’s an application that has far more product benefits than anything comparable. And with Walltite ECO™, contractors now have an option to install eco-friendly spray foam insulation. Walltite ECO™ is a high quality, premium product ideal for residential, commercial, and industrial installs.

At Great Northern Insulation, expert installers recommend Walltite ECO™ for applications that are above grade and below grade. The product is ideal under concrete floors; inside wood or steel framing; and even in foundation walls. For the team at GNI, no other product seals and insulates like spray foam - and it’s all done in a single application. As an added benefit, Walltite ECO™ is considered to be eco-friendly spray foam insulation.

The National Building Code of Canada

Walltite ECO™ is an eco-friendly spray foam insulation that exceeds the specifications of the NBCC. It’s the only insulation system that satisfies the polyurethane durability test prescribed by the Canadian Construction Materials Centre.

Walltite ECO™ - Certified by EcoLogo™

Walltite ECO™ is the first closed-cell spray foam to be certified by EcoLogo™. This is North America's most acknowledged certification, and assures consumers that Walltite ECO ™ is an eco-friendly spray foam insulation product.

GREENGUARD® - Children/School Certified

Walltite ECO™ meets the strict standards of the GREENGUARD® Certification Program. This certification is an assurance of indoor comfort, indoor safety, and eco-efficiency. Walltite ECO™ is therefore safe for school applications.

Eco-friendly spray foam insulation from Great Northern Insulation

Walltite ECO™ meets air barrier requisites, vapour barrier requisites, and insulation requisites – all in ONE application. With a professional install, this product adheres to practically every substrate. And the finished space is completely seamless application – an ideal application in new construction, retrofitting, and renovations.

Great Northern Insulation installs Walltite ECO™ in all types of buildings – from residential, to commercial, to institutional. It’s a premium insulation system that requires professional skill for best results. At GNI, installation crews are highly trained and highly proficient with Walltite ECO™ (this is not a weekend DIY project).

No other product can compare with Walltite ECO™ - it provides an effective air-barrier, an efficient vapour barrier, and excellent thermal insulation. Energy savings from season to season are dramatic, making the product very cost-effective. Dollar for dollar, this application provides one of the best returns-on-investment.

Spray foam insulation is unlike other products when it comes to longevity – a professional install can last a lifetime, doesn’t require periodic replenishment, and doesn’t need replacement over the years. At Great Northern Insulation, residential and commercial customers are provided with a service package from start to finish. Find out more by calling GNI at 1-800-265-1914, or visiting the company website at www.gni.ca .

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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