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5 Reasons to Consider Replacing your Insulation

July 21, 2017

For homeowners considering insulation replacement, there are a number of important things to consider. If you want to replace your insulation, for whatever reason, it should be done right from the start. With Great Northern Insulation, it all begins with a proper assessment of the space. Here, GNI determines if removal and replacement is required, and to what extent.

Before deciding to replace your insulation, it’s a good idea to know what problems are being experienced. For example, drafty rooms could be the result of many things, and poor insulation may well be one of them. Another issue might be higher-than-usual heating and cooling bills. Here again there may be several problems that contribute, one being poor insulation.

Great Northern Insulation gets to the crux of a problem, especially “behind the scenes”. Existing insulation may be badly installed or simply deteriorating. Air leakage, airflow, and ventilation may all need to be corrected. And finally, there may be bigger problems – like mold deposits, animal contamination, and even dangerous and hazardous materials like asbestos.

When it does come time to replace your insulation, a professional approach is recommended. With Great Northern Insulation, homeowners are assured of removal and replacement that is complete and comprehensive. Insulation removal is safe and effective; repairs and retrofits are designed to resolve problem areas; and installation of new insulation is to code.

If you want to replace your insulation, there are probably a number of things going on inside the home. And while some may be obvious, there may be things going on “behind the scenes”.

Higher-Than-Usual Heating/Cooling Bills

Heating and air conditioning account for most of a utility bill. High bills throughout the year often point to insulation that is inefficient. Replacing insulation will contribute to much improved energy efficiency and reduced costs of heating/cooling.

Temperature Inconsistencies in Rooms

Inconsistent temperatures from room to room (in both summer and winter) could be the result of an insulation issue. As well, pockets of air leakage and poor ventilation could be contributing to the poor performance of the existing insulation.

Infestation of Rodents, Insects, and Pests

Insulation in the attic (and even in the basement) makes for a great environment for pests. Any sign of infestation should be investigated, and measures taken to remediate the problem. Where insulation is damaged, it needs to be replaced.

Leaky Roof and Associated Water Damage

A leaky roof usually translates into a leaky attic, and that means damage to existing insulation. There is potential for deterioration, and further potential for mold to develop. In situations like these, you will have to replace your insulation.

Drafty Rooms, Windows, and Doorways

Drafts are a sure sign of air leakage – a problem often overlooked, but very costly in terms of wasted energy. While additional insulation may help with this problem, the more effective remedy is effectively sealing the air leaks.

If you’re ready to replace your insulation, call the professionals at Great Northern Insulation toll-free at 1-800-265-1914 or visit the company website at www.gni.ca .

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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