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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

Southwestern Ontario

7035 Industrial Drive
Comber, Ontario
Canada N0P 1J0

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

GTA East

103 North Port Road
Port Perry, Ontario
Canada L9L 1B2

TOLL FREE: 1-800-265-1914

GTA & 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


259 Campbell Street
Sarnia Ontario
Canada, N7T 2H3

TOLL FREE: 1-800-265-1914

Niagara Region

6260 Don Murie St
Niagara Falls, ON
L2G 0B4

TOLL FREE: 1-800-265-1914


Great Northern Insulation - Better Business Bureau Profile.


Best of 2017

From reputation to responsiveness, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thanks to everyone for the great ratings! 

HomeStars 2018

Best of 2018

For the second year in a row, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thank you again to everyone!

Homestars Best of 2019 Award

Best of 2019

For the third year in a row, HomeStars ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2020 Award

Best of 2020

For four years now, HomeStars has ranked Great Northern Insulation at better than 95% for customer satisfaction.

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

Enenrgy Savers

Energy Saving

Energy saving and energy efficiency is easier than one might think. Great Northern Insulation helps to identify performance issues, while taking advantage of improvement opportunities.

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

WALLTITE® ECO™ is a high-performance system, professionally installed by certified and approved specialists. Its C.C.M.C. approved (Canadian Construction Materials Centre) - with product quality guaranteed - and with installation by highly trained experts with the technical know-how to do the job right, the first time.

Insulthane Extreme

Insulthane® Extreme

For the ultimate in high performance spray foam insulation, Insulthane® Extreme is the professional choice for residential, commercial, and industrial application. With improved thermal performance over other products, Insulthane® Extreme has an exceptionally low Global Warming Potential (GWP). Considered environmentally friendly, this next generation spray foam insulation is non-ozone depleting, and exceeds specifications of other HFC product alternatives.


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).


Baeumler ApprovedTM
Professional, Certified and Insured

Baeumler ApprovedTM gives you peace of mind when connecting with contractors, trades and home service providers. All Baeumler Approved members have demonstrated high quality work for customers and other trade professionals. Members must also have Workers Compensation, liability insurance of at least $1,000,000 and prove professional certification.

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 Energy Conservation Program provides incentives of up to $1,600 to customers who achieve energy efficiency and fuel savings – 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?

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