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A Professional Approach to Fiberglass Insulation

January 28, 2016

With the rising cost of utility bills, energy efficiency in the home has become an important issue for many homeowners. Today, keeping the house warm in winter and cool in summer is only a minimum requirement. Today, its also about saving money on energy consumption, and keeping utility bills as low as possible. Here, a well insulated home can provide the homeowner with comfort and cost savings right around the calendar year.For the professionals, a home is a "building system" and it needs to be properly sealed, properly insulated and properly ventilated. It's this combination that will ensure balanced heating and cooling cycles and HVAC equipment that is performing at peak. In short, a residential insulation project is not complete unless there is an air barrier, a vapor barrier, and proper ventilation throughout. This is a true professional approach to insulation. Hiring a professional contractor will ensure the best outcomes when installing insulation. A homeowner can be sure that the insulation product will be properly installed; the space will be completely sealed; and air circulation will be properly balanced. When installing fiberglass insulation, its also important to have an effective air barrier and vapor barrier in order to prevent unwanted air movement and avert any moisture accumulation. In North America, fiberglass insulation products are popular, and can provide satisfactory results when expertly installed. But the very best product on the market remains Spray Polyurethane Foam. It's an application that seals and insulates better than anything else, and provides the highest R-Value of any comparable application. However, its known to be more costly than others, and may not accommodate all project budgets. In terms of project investment, the fiberglass insulation products are cost effective for most budgets. The fiberglass "batts" deliver satisfactory energy efficiency as well as good value. And with a professional installation, the "batts" will not settle over time, and will retain their R-Value for years. On the downside, fiberglass does not provide effective sealing, and poses an installation problem that should be discussed with a contractor. Another option with fibreglass is the so-called "blown-in" product. Again, the insulation value is satisfactory, and settling should not be problematic when professionally installed. But with all of the attributes of fibreglass, many contractors are recommending a more comprehensive installation that combines Spray Polyurethane Foam with one of the fibreglass products. The results and dollar value are worth the investment. Whichever insulation product is chosen, a professional touch is recommended for a good many reasons. Expert contractors install the highest quality products, while assuring the highest level of workmanship. They also provide sound product warrantees for their customers, and long term guarantees on the installations. Finally, experts don't take unnecessary shortcuts and always install according to the manufacturer's specifications. While there are definitely money savings to be had with a do-it-yourself (DIY) approach to home insulation, it's the experts who usually do a better job with better results. They know how to deliver peak product performance and long term value much better than the weekend DIY enthusiast.

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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