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Building a New Home? Make Sure the Contractor Installed Proper Insulation

June 20, 2016

One of the most common questions homeowners ask when building a new home is what type of insulation to install. Then, the follow-up question is whether Spray Foam Insulation is the best product to go with. Today, many professionals are recommending SFI as the best product, with the best performance, and the best long-term benefits. In a newly constructed home, it's an all-in-one application that seals and insulates better than any comparable product on the market. Insulation professionals install SFI because it ensures energy-efficiency for the building envelope. Once applied, it seals the space effectively; it provides the highest R-Value rating per inch; and it adds structural strength wherever installed. The SFI product also performs as an air barrier and vapour barrier in one, without the need to install separate barriers. With Spray Foam Insulation, even hard-to-reach spots like joints, corners and crevices are coated and sealed tight. In a new home, SFI can be sprayed into a variety of areas throughout the building structure. And because walls and ceilings aren't yet finished, the application process is made much easier. Highly specialized equipment is used to spread the foam as a liquid, after which it expands into place, and hardens as a dense blanket of insulation. The finished space is airtight, impenetrable to any moisture, and insulated more effectively than any product or combination of products. The long-term benefits of Spray Foam Insulation are as effective in any size home, including new builds, renovations, and retrofits. Best of all, one install does it all: improving energy efficiency throughout the home; enhancing air circulation and indoor air quality; and allowing the heating and cooling system to better perform. A home insulated with SFI will have lower energy bills from one season to the next, making for noticeable annual savings on heating and cooling. Whether it's new construction or not, Spray Foam Insulation requires a professional touch for the best results. At Great Northern Insulation, installers are highly trained and equally experienced. GNI install teams always do it right: meeting industry standards; working to code; and following manufacturer specifications. As a company, GNI assures complete customer satisfaction on every project, with sound warrantees on brand name products and on all of the workmanship. For Great Northern Insulation, SFI has become the product-of-choice in many applications. But even the best product on the market requires expertise to perform at full potential. A second-rate installation will not deliver long-term performance, and will not deliver the advertised benefits. At GNI, SFI installation crews are both licensed and certified - they prepare the jobsite properly; they use the appropriate safety gear; and above all, they protect occupants and residents. With regard to project cost, Spray Foam Insulation is considered a premium product compared to other options. However, the product attributes are outstanding, making for a project investment that is very worthwhile. Professionally installed, SFI will normally last a lifetime. The installation will not need replacement or replenishment. Importantly, the long term return-on-investment makes good economic sense, and provides a relatively short "pay-back" period.

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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