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Energy Efficiency in a Typical Residential Home

March 26, 2016

Homeowners across the country are becoming more and more aware about energy consumption and energy efficiency. The main concern is about reducing utility costs, but it's also about improving indoor comfort, and even about being conscious of the environment. For older homes, especially the ones that are poorly insulated, heating and cooling costs can be completely out of proportion. And when compared to newer homes with better insulation and better airtightness, it's not uncommon for utility bills to be 25% higher. Year after year, statistics show that 50% - 60% of energy usage in the home is directly related to heating and cooling. This is why many homeowners are choosing to upgrade or retrofit their home insulation. Without doubt, a well sealed, well insulated home requires far less heating during winter and far less cooling during summer. Best of all, the energy savings over the long term serve to offset many of the project costs that are associated with upgrading or retrofitting. Home insulation is a home improvement project with paybacks. In Canada, CMHC (Canada Mortgage and Housing Corporation) highly recommends doing an Energy Audit prior to doing any actual insulation work. Amongst other assessments, a qualified technician will measure the airtightness of the house, and will identify critical areas of air leakage. Recommendations are then made for window and door improvements, heating system enhancements, and insulation upgrades. Probably the most important assessment is the measure of airtightness - something that is critical for energy efficiency. Reducing air leakage through exterior walls, roof cavities, and foundation walls is the highest priority when insulating a home. It will have the most effect in terms of improving energy performance. And for an expert contractor, this is usually the first consideration with an insulation retrofit. Leaking air, regardless of the location in the home, always reduces the effectiveness of insulation, no matter how professional the install. As well, air leakage allows moisture to accumulate, further compromising the indoor air environment. A well-executed insulation retrofit will resolve air leakage issues using a variety of approaches. Clearly, the Energy Audit will isolate the common and obvious air leaks that need attention. Where necessary, thermo-graphic equipment might be used to assess "hidden" pockets of heat loss. Thereafter, a contractor can offer solutions that may include weather-stripping, caulking, sealing, and of course, insulation. Indeed, this is where choosing the right insulation product for the job will make a major difference in project outcomes. When it comes to installing insulation, this too requires expertise. There are countless products available today, each with unique attributes and each with a specific price point. Clearly, there are important choices to be made: thermal resistance (R-Value) must be considered; ease of installation must be determined; and project cost must be calculated. All of this is best managed by a professional who can offer viable retrofitting options to the homeowner - options that deliver the best results, and the most cost effective investment. Needless to say, there are homeowners who are attracted by the prospect of saving money with a DIY (do it yourself) approach to insulation retrofitting. Most simply put, this is work for those who have the acquired skills, experience and expertise to guarantee optimum outcomes

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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