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It's Time to Assess if Your Home is Well Insulated and Energy Efficient

December 23, 2016

Sitting comfortably at home in a warm and cozy space doesn't necessarily mean that the house is energy efficient. And bumping up the thermostat for extra warmth isn't exactly wise energy use. In fact, most homes suffer from some type of inefficiency - mainly because cold air is creeping in, and warm air is escaping. Whether it's a drafty room, or an unusually cold wall, practically every homeowner can relate to these symptoms. Many times its about poorly performing insulation, but it's also about the many sources of air leakage found throughout the building "envelope". When a home is energy efficient, energy consumption is better managed, utility bills are lessened, and the home is comfortable from top to bottom. Conversely, homes that are not energy efficient are needlessly wasting energy and experiencing high utility bills. This is why a good assessment of the home makes sense - and why resolving poor performance actually makes economic sense. Most homeowners can readily identify the obvious symptoms of poor energy performance, but for more complicated problems, it pays to have a professional assess and evaluate at large.

Furnace constantly overworking

When the furnace is overworking, it's a sign that insulation isn't performing at its peak, and air is leaking in and out of the home. All of this is making extra demands on the furnace day-to-day.

Overly high seasonal heating bills

Higher-than-normal heating bills are an easy symptom to detect. What's difficult is to determine why - is it poor weatherization; failing or inadequate insulation; or just undesirable air leakage.

Hanging icicles and/or ice dams

For professionals, hanging icicles (or ice damming) are a definitive symptom of insulation that is under-performing. Here, attic insulation is either old and deteriorating or inadequately installed.

Indoor humidity or condensation

Moisture accumulation, including indoor humidity and condensation, is a sing of trouble. When unattended, this environment can propagate mould, leading to bigger issues beyond insulation.

Fluctuating room temperatures

Unsteady room temperatures are probably one of the most common symptoms for homeowners. Here, the reasons can vary from air leakage, to poor ventilation, to poor insulation performance. Attic or basement, improving the home's insulation is central to enhancing energy efficiency. And while comfort is definitely a benefit, the savings on seasonal utilities are even more meaningful. When professionally installed, high performance insulation is likely one of the best renovations a homeowner can undertake. With an expert touch, new insulation will radically decrease energy usage and lessen both gas and electric bills. But best of all, year after year, the dollar savings gradually offset the cost of the original installation investment. It's simply a win-win situation. Today, there are many government-initiated incentives designed to help homeowners expedite various energy upgrades and retrofits. From air sealing to insulation, it's an ideal opportunity to make improvements to energy efficiency, while taking advantage of cash rebates and incentives to offset the project cost. And with a reputable contractor on hand, homeowners can be assured of the best quality products, professionally installed.

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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