Call Now 1.800.265.1914

COVID-19: What We Are Doing

Information on the COVID-19 Coronavirus and how Great Northern Insulation is reacting.

We provide home comfort to hundreds of people across Ontario every month. This means that our employees have interactions with multiple people every day. Improving home comfort is what we do, and there is no way around this.

The health and safety of our customers and employees have always been our highest priority. That is why we are taking extra precautions in response to COVID-19. Here is what we are currently doing, and what you can help us do, to keep everyone comfortable in their homes.

Great Northern Insulation is monitoring the situation surrounding COVID-19 on an ongoing, constant basis. Home assessments, for the time being, may still be booked by completing a form on our Contact page, or by phoning us at 1-800-265-1914.

Our Business

What We Are Doing:

Our Customers

What You Can Do:

You can read more about COVID-19 on Ontario’s official website.

Click here to view a PDF by the Public Health Agency on the difference between self-monitoring, self-isolation and isolation for COVID-19. Click here to view a PDF by Public Health Ontario showcasing how to properly self-monitor for COVID-19. Click here to view the official Ontario 2019 novel coronavirus (COVID-19) self assessment web page.



Here are some of the more common questions that our customers are currently asking us about our precautions. We want you and our employees to feel safe when we enter your home. Please do not hesitate to ask us questions if still have concerns.

Q: Is Great Northern Insulation doing anything differently when entering my home?

A: We have always used masks and gloves when required for health and safety reasons related to our line of work. This has not changed for us, but we are increasing the use of masks and gloves by our crew members to increase the safety of both our customers and our employees when entering homes.

Q: Can I request that any employee visiting my home wear a mask and gloves?

A: All of our frontline employees are already provided with masks and gloves. These will be used when entering your home. PPE that comes in contact with high traffic surfaces will be be changed regularly.

Q: Are your employees knowledgeable about COVID-19?

A: We provide consistent updates to our employees about COVID-19, how it is spread, and the precautions that can be taken to prevent this. These updates are shared through our routine safety talks. Our employees are already equipped with health and safety gear, including masks and gloves, when entering customer homes to install insulation.

Q: What information surrounding self-monitoring and self-isolation are you providing to your employees?

A: In addition to consistently communicating safety precautions, we have provided all of our employees with access to Ontario's 2019 novel coronavirus (COVID-19) self-assessment and How to self-monitor.

You can contact us with questions you might have by calling 1-800-265-1914 or by emailing info@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.

Please, enter a valid value

Incorrect values!