Call Now 1.800.265.1914

What Are Building Codes? Why Are They So Important?

September 29, 2016

Every residential home is different - built in a different era; with different specifications; and with different building materials. As such, Building Codes allow for standardization and consistency in building practices. This would apply to everything from a newly constructed home, to a basement reno, to insulation retrofitting. However, for the most part, these codes are considered minimum requirements. And while this may suffice for many homeowners, it's far better to go beyond the minimum, employing a quality contractor who builds with quality materials and products. When it comes to energy efficiency in a residential home, the Canadian National Building Code defines minimum standards for insulation performance and air tightness. These standards apply to the Provincial Building Code as well, and are updated on a regular basis. In fact, many changes are being made on an annual basis, particularly because of the emphasis on energy consumption and climate change. Needless to say, Building Code changes like these will have a major influence on new construction and on renovations and retrofits. Clearly, the changes are for the better. With home insulation, changes to the Building Code are especially relevant. Indeed, over the years, there has been much discrepancy about the definition of R-Values. Evolving definitions will better address R-Values to reflect the true value of a "whole" installation, rather than reflecting the insulation value of a product prior to installation. Importantly, new codes will encompass both insulation performance and air sealing. Hence, conventional insulation techniques will likely not meet the new standards. It means installing better products that are higher performance. For the average homeowner, Building Codes ensure acceptable standards, designed to deliver a good outcome. But whether it's a new build or an energy retrofit, it's important to do the research and to choose high performance insulation materials and superior installation techniques. Today, Spray Foam Insulation leads the way in high performance insulation materials. And in majority of cases, SFI will meet and usually exceed Building Code requirements. The same thing applies for installations like HP+� Wall Systems (insulation that provides superb control of air/moisture). In future, government benchmarks and building standards will dictate the importance of energy efficiency in a residential home. In an ongoing effort to reduce energy consumption, there will be minimum requirements set for both air tightness and insulation performance. And although the minimums are only guidelines, many homeowners will choose to do more, and actually retrofit for the future. This is achievable by taking a quality approach to both product and installation, and hiring professionals who provide superior installations, along with high quality products. Bottom line, an energy-efficient home is going to be more comfortable, more healthful, and more cost effective for a homeowner. And that means doing it right from the start - keeping up with the Building Code, and choosing professionals who can ensure the very best long-term outcomes. As well, manufacturers and contractors will have to keep up with changing demands, standards, and expectations.

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!