Call Now 1.800.265.1914

Spray Foam Insulation - It's Become the Product-Of-Choice For the Home.

March 02, 2015

When it comes time to insulate, it's critical to choose an insulation product that suits the job. This premise applies equally for new home construction, renovations or retrofitting. When insulating the home, numerous decisions must be made, and it's best to be well informed - an informed consumer makes better decisions and works more productively with a contractor. If you've done the research, and have already decided on spray foam insulation, you're joining many satisfied homeowners. The fact is, more and more contractors are opting for the spray foam insulation, and it has quickly become the product-of-choice for many. At the same time, many more homeowners are choosing spray foam, mainly because of proven product benefits and long-term results. Choosing the right contractor is also a challenge, and here, it's preferable to choose a reliable, reputable, well established company. Having a contractor who is up front and open will have the best outcomes. Like any major investment, a detailed price quote is key. But the focus should not be on price alone, and this is especially true with spray foam insulation. A "low-ball" estimate is suspicious, and it's important to compare "apples and apples" - the idea of throwing around numbers to close a sale is simply questionable. A good pricing estimate will also include a specific job description: the proposed R-Value coverage; precise product information; and well defined installation details. Every contractor wants to secure business and close the sale. But they also have a responsibility to clearly answer your questions. You are the customer, so ask about everything - about the product warranty; the installation warranty; different price options; even after-market service. With spray foam insulation, all of these factors are important - the product is unique and different, and the installation process can be quite complex. This is a project where covering all the bases is critical. Depending on the extent of your insulation project, there may be some prep-work that can be done to reduce the contractor's labor load and reduce the project price. It may be basic demolition, or simply preparing the installation space - even the removal of screws and nails and hardware is helpful. Finally, if there are other contractors involved (plumbing, HVAC, or electrical) make certain that all are well-coordinated and somehow working in cooperation with each other. Beyond overall project management, a professional insulation contractor will focus on doing the job right the first time - and without taking any shortcuts. The building code must be followed, local by-laws must be obeyed, and most importantly, project safety must be a priority. The contractor must ensure that occupants and residents are safe during the installation period and immediately after. Indeed, a spray foam install may require vacating the premises for a 24-hour period. All things considered, a decision to install spray foam insulation in the home is both sound and smart. No other product on the market can provide as many benefits, and no other product can compare with the overall cost savings on energy. It's quite simply the best insulation product on the market.

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!