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About Sustainability

High quality, professionally-installed insulation plays a large role in creating a sustainable, energy-efficient home. Great Northern Insulation believes it is our job to provide information on insulation products and services that will contribute to a more sustainable environment, whether it be through home energy efficiency or the creation of a building that utilizes sustainable building products, or both.

There are many definitions and paths to sustainability. A sustainable home, for instance, can be one with extremely high energy efficiency achieved through high-quality insulation and air sealing construction methods. Oftentimes these homes are given the title of a Net Zero or Passivhaus home, meaning they have met the stringent requirements for airtightness, energy efficiency, or even their ability to generate electricity through external means, such as solar panels.

Additionally, sustainability may be defined through the actual products and construction methods put into the building itself. Different home or business owners may have different ideas of what qualifies as a sustainable insulation product. For many, spray foam insulation is considered to be a sustainable insulation type because of its extremely high insulative value and its excellent air sealing ability. While that may be true, it is also true that the creation of spray foam insulation requires various types of chemicals that can lead to higher greenhouse gas emissions during its production than other insulation types, such as sheep’s wool insulation or hemp insulation. It is possible to quantify exactly how sustainable an insulation product is through something called its embodied carbon, which is a way of calculating how much carbon a product accounts for or eliminates during its lifespan.

No two products are created equal, of course, and it can be difficult as a consumer to track or learn the various differences in sustainability on a per-product basis. There’s just too many to account for! Great Northern Insulation believes it is our job to be the experts in sustainability - it is up to us to be able to provide our customers with information on sustainable insulation options, regardless of what their definition of sustainable is.


How do I select a sustainable product option at Great Northern Insulation?

Great Northern Insulation understands that sustainable product offerings are constantly being improved and innovated on. Being an industry leader with over 40 years of experience, we have noticed large shifts in construction when it comes to sustainability. In the 1990s, the concept of overall building performance and air barriers became a far more frequent topic of conversation, leading to new insulation materials, testing, and building design concepts. Great Northern Insulation stayed on top of these industry shifts by being a member of the Ontario Building Envelope Council, where we were exposed to some of the earliest considerations for energy efficiency, green building, and sustainability.

After being in operation for over 40 years, Great Northern Insulation continues to strive to be an industry leader in sustainability. We are committed to identifying, sourcing, and providing insulation materials that are sustainable in both their production and performance and aim to promote the use of Canadian-produced materials wherever possible.

If you have any questions regarding sustainable insulation types for your home, please contact us via our webform or by calling 1-800-265-1914.


Is spray foam insulation sustainable?

One of the types of insulation that Great Northern Insulation promotes is BASF’s WALLTITE spray foam insulation. WALLTITE spray foam insulation provides an extremely high thermal resistance value and excellent air sealing capabilities, meaning it is a very high-performance insulation type that can assist in creating a building that has high energy efficiency. Your home or business will be warmer in the winter, cooler in the summer, all while requiring the HVAC system to work less often. This leads to lower energy consumption and higher overall energy efficiency, meaning a more sustainable home.

Great Northern Insulation utilizes the next generation of spray foam insulation, WALLTITE CM01, that utilizes hydrofluoroolefins (HFOs) as its blowing agent. This new generation of spray foam insulation is Zero ODP, meaning that no ozone-depleting agents are utilized in its installation, and has a drastically lower Global Warming Potential than previous generations of spray foam insulation. By utilizing HFO-based spray foam insulation, Great Northern Insulation is reducing the global warming impact of foam insulation in Ontario. In addition, this new generation of WALLTITE spray foam insulation is EcoLogo Certified, confirming that there is a minimum recycled content of 5% by weight of finished product, GreenCircle certified for LEED v4 compliance, and GREENGUARD Gold Certified, a certification that requires lower total VOC emissions levels to ensure that it is safe for use in environments like schools and healthcare facilities.

By those standards, WALLTITE CM01 spray foam insulation can be seen as a sustainable product option, providing a balance between extremely high performance for energy efficiency and GHG emissions produced during its production.

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

Southwestern Ontario

7035 Industrial Drive
Comber, Ontario
Canada N0P 1J0

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

GTA East

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

TOLL FREE: 1-800-265-1914

GTA & 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


259 Campbell Street
Sarnia Ontario
Canada, N7T 2H3

TOLL FREE: 1-800-265-1914

Niagara Region

6260 Don Murie St
Niagara Falls, ON
L2G 0B4

TOLL FREE: 1-800-265-1914


Great Northern Insulation - Better Business Bureau Profile.


Best of 2017

From reputation to responsiveness, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thanks to everyone for the great ratings! 

HomeStars 2018

Best of 2018

For the second year in a row, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thank you again to everyone!

Homestars Best of 2019 Award

Best of 2019

For the third year in a row, HomeStars ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2020 Award

Best of 2020

For four years now, HomeStars has ranked Great Northern Insulation at better than 95% for customer satisfaction.


GNI is the Authorized & Trusted Insulation and Air Sealing Installer for Lowe’s

Enenrgy Savers

Energy Saving

Energy saving and energy efficiency is easier than one might think. Great Northern Insulation helps to identify performance issues, while taking advantage of improvement opportunities.

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

WALLTITE® ECO™ is a high-performance system, professionally installed by certified and approved specialists. Its C.C.M.C. approved (Canadian Construction Materials Centre) - with product quality guaranteed - and with installation by highly trained experts with the technical know-how to do the job right, the first time.


Gold Certification promise

GREENGUARD® Gold Certification ensures the strictest criteria for low-level chemical emissions. Certified products are safe for individuals with sensitivities (children/elderly) and safe for use in school environments and health-care facilities. The product certification is widely recognized by the LEED Rating System (Leadership in Energy/Environmental Design).

Insulthane Extreme

Insulthane® Extreme

For the ultimate in high performance spray foam insulation, Insulthane® Extreme is the professional choice for residential, commercial, and industrial application. With improved thermal performance over other products, Insulthane® Extreme has an exceptionally low Global Warming Potential (GWP). Considered environmentally friendly, this next generation spray foam insulation is non-ozone depleting, and exceeds specifications of other HFC product alternatives.


Multi-attribute product certification

ECOLOGOTM is an accredited sign of environmental performance – holistic – green – sustainable - and compliant with strict, third party standards. Life cycle criteria for product certification may include manufacturing and operations; health and environment; product materials and performance; and product innovation, development, and management.


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).


Baeumler ApprovedTM
Professional, Certified and Insured

Baeumler ApprovedTM gives you peace of mind when connecting with contractors, trades and home service providers. All Baeumler Approved members have demonstrated high quality work for customers and other trade professionals. Members must also have Workers Compensation, liability insurance of at least $1,000,000 and prove professional certification.

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 Energy Conservation Program provides incentives of up to $1,600 to customers who achieve energy efficiency and fuel savings – 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.

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