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Choosing the Right Type of Insulation For Your Home

July 13, 2015

Choosing the right type of insulation for your home begins with understanding the fundamentals of insulation. There are so many products on the market today, and so many marketing claims, that decision-making is made more confusing than need be. To be sure, having a good insulation contractor is a very good start - a good company will work with you to choose the right product and the right installation method to best suit your needs and your physical space. Probably the most relevant thing about home insulation is R-Value. And without getting overly technical, it's a measure of the resistance (of the insulation) to heat flow. The experts will refer to "thermal resistance" - and will explain that R-Value is a measure of how much heat can flow through a portion of insulation. Simply put, the higher the R-Value - the more resistance to heat flow - and that means that heat stays in during the winter and stays out during the summer. Good insulation companies do more than just sell and install. They will consider any building code requirements, based on geographical location. They will consider floors, walls, attic, and basement as a house "system". And finally, they will recommend a strategy that will ensure energy efficiency for the home, and cost savings from season to season. For the homeowner, it means insulating with a plan, and not just installing the products suggested by the staff at the home center. The fundamental idea behind insulating (regardless of the final product choice) is to make a given area totally airtight. This is something that all contractors can agree on, and a reputable insulation contractor will endeavour to install the product that achieves this objective. And while the market is full of product options, some of them truly excel. For the homeowner, its important to establish a viable project budget, and to base product choice and installation on which will bring results. Today, the top product on the market is spray foam insulation - it's the favourite of insulation contractors, and allows for a one-time application that has many benefits at the same time. It creates a solid, effective air barrier - it serves simultaneously as a vapour barrier - and it provides an R-Value superior to any of the other insulation products on the market. As the best, spray foam is a premium product and may not suit all project budgets, although the results are worthwhile. Traditional fibreglass-batts are another good option for insulation, and when these are installed together with spray foam, the outcomes are quite impressive. This combination install is referred to as a "hybrid" approach, and combines the spray foam product and fibreglass-batts in one. The products work in tandem with each other, and with excellent results. For most project budgets, a "hybrid" install will assure energy efficiency, seasonal savings, and above all, cost effectiveness. Apart from choosing the right type of insulation, choosing a good contractor is also part of the mix. And because product and installation can get complex, the relationship between homeowner and contractor is critical for achieving results.

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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