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When is it Good to Use Spray Foam Insulation?

January 19, 2015

For proponents of spray foam insulation, it's always a good time to use the spray foam product.It's become a favorite of many professionals in the industry, and has satisfied many customers because of the benefits that it brings to an insulation project.The spray foam products are generically known as polyurethane foam and are being used routinely in attics and roof cavities, as well as inside the walls and under the floors.

Professionally applied, spray foam insulation is sprayed into a given space in thick liquid form, and transforms itself into a thick, hard layer of insulation.It performs as BOTH an air barrier AND a moisture barrier at one time - probably one of its best product features. It creates a space that is absolutely airtight, watertight, and therefore resistant to mould growth.Best of all, there is no need to install a separate and freestanding vapor barrier.

Spray foam insulation delivers the highest R-Value rating of any product on the market.In any insulation project, you want to reach those high levels - in fact, the higher the better.With other insulating products, it's not uncommon to have gaps or openings that allow for heat (and cool) to be lost and for R-Values to suffer as a result.But with a professional spray foam install, there are no holes or openings, and no heat loss.

Having a home re-insulated with spray foam benefits the entire indoor air environment in a residential home.The enhanced insulating value allows HVAC equipment to perform better, especially if there is an energy-efficient furnace already in place.The truth is, it's not unusual to experience energy cost savings of up to 40% from one season to the next, and especially in the extreme ranges of cold winters and hot summers.

Spray foam insulation can be installed practically anywhere.There are, of course, some exceptions, but an expert installation professional will know about any limitations and any safety implications.In some situations, a professional installer might recommend "topping up" a spray foam install with another product - blown-in insulation - a proven technique that combines the benefits of both products for better results.

One of the big questions that arise with spray foam insulation is about the do-it-yourself approach.The fact is, the average homeowner is not adequately trained to handle or install spray foam.The chemical compounds require special handling, the equipment requires skill and expertise, and the installation itself requires some proficiency.The do-it-yourself approach can be risky, and calling in an expert to fix up a bad job can be costly.

With regard to cost, spray foam is an expensive proposition.But it must be looked at as an investment - the many benefits, both short term and long term, far outweigh the initial cost of product and installation.In addition, the significant energy savings make the investment worthwhile, season after season.In some cases, there may be government rebates or incentives that could be helpful in moderating the overall installation costs.

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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