Call Now 1.800.265.1914

Why Insulating the Attic is Essential and Important.

February 23, 2015

In North America, which is clearly a climate of temperature extremes, heating and cooling the home has become more and more expensive over the years. It's no wonder, then, that making improvements to home insulation has become so important. The fact is, enhanced insulation delivers significant cost savings throughout the year. And for industry professionals, properly insulating the attic is practically the best way to conserve energy and save money. Statistics actually confirm that notion - a properly insulated attic can save from 10 - 50% on utilities. Prior to insulating the attic, an energy audit can be quite a valuable undertaking. An in-depth audit can show how existing attic insulation is performing compared to how it could perform if upgraded. The results are often surprising for the homeowner. Just by example, it's not uncommon for seasonal savings on heating and cooling to offset the total cost of insulating the attic. Above and beyond the cost savings, there are also additional benefits to insulating the attic: improved air circulation; enriched air quality; and enhanced home comfort overall. Assessing and evaluating the condition of the attic is essential before making improvements. A good contractor will evaluate the physical state of the attic; calculate the existing R-Values; and determine a viable direction for the upgrade. As well, the contractor will check for holes, gaps and openings where heated air or cooled air can easily escape. All things considered, the homeowner should receive an in-depth, accurate, and honest report from the contractor. In addition, there should be project recommendations for both product and installation. Current industry statistics show that properly insulating the attic is the most essential aspect of making a home more energy efficient. Choosing the right attic insulation product, along with a professional installation, is bound to deliver seasonal cost savings that are substantial. A good contractor will recommend the product (or products) that best suit the job, and the best installation method for optimum outcomes. And although a DIY approach might be an option, attic insulation is best left to those with product knowledge and installation expertise. Today's professionals, for instance, are opting for a combination approach to attic insulation. They are incorporating two products into one installation: spray foam insulation and "blown-in" insulation. The spray foam product SEALS and INSULATES like no other product on the market. And the "blown-in" insulation provides additional R-VALUE where it's installed, along with excellent DOLLAR-VALUE for the project itself. The whole idea is to deliver optimum results during the short term, and significant cost savings for the long term. Having established that insulating the attic is BOTH essential AND important, it's key to do it right the first time - to evaluate the specific needs of the project - to choose products that suit the project - and to address the challenges of the job. An attic insulation project is not the place to cut down on the budget, engage in half measures, or cut corners. For best results, the special products and specialized installation are best left in the hands of a professional.

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!