Call Now 1.800.265.1914

Understanding Fiberglass Insulation

March 21, 2016

Unlike so many other home improvement projects, insulating the home will have a positive effect on both comfort and budget. In most northern climes, insulation has more relevance in the winter than in summer, although for many homeowners there's an equally important role during the hot summer. In recent decades, many residential homeowners have opted for fiberglass insulation when deciding on their installation. It's a product option that is quite affordable, with very good results, and with a satisfactory lifespan. Today, with so many big box home centers, there's an inclination for homeowners to undertake DIY projects at every opportunity. Yes - it can save project dollars, and for some, it's a definite need. But it's also true that there's a time and place for a DIY project. As for home insulation, a professional touch is highly suggested. By any measure, the installation or re-installation of fiberglass insulation is best handled by a crew that has product knowledge and installation know-how. And the final outcomes will make a difference. All residential insulation products measure thermal insulation in R-Values. This is a rating that reflects how well a particular product will insulate. In technical terms, R-Value is an indication of resistance to "heat flow". In other words, the higher the R-Value rating, the greater the thermal resistance. And while R-Value should not be the end of the story, insulation products with high R-Values are better (and more expensive). For the most part, fiberglass insulation has lower R-Value ratings than comparable products. Every home is a "building envelope". As such, there are some areas that require more insulation than other areas. For example, roof cavities and attic spaces are far more exposed to the outdoors than other parts of the home, and so require special attention when being insulated. At the same time, exterior walls require a different approach, even though they too are exposed to the outdoors. Here again, a professional touch will ensure that the right insulation product is being installed for the specific application and use. In terms of cost, installing fiberglass insulation will depend on three basics: the amount of R-Value installed; the size of the space and quantity of material; and the cost of installation. As mentioned, the DIY method may well save money, but for optimum results, there's no comparison with a professional job. An expert installer has the project experience to install fiberglass insulation (in batts or loose fill form) in a manner that will guarantee peak product performance. And that means long lasting outcomes for years to come. For many homeowners, fiberglass insulation is the preferred install, primarily because of affordability. But with a professional on hand, various other options may be recommended - options that could deliver much better performance and more substantial savings on energy consumption. After all, the main goal of home insulation is to improve overall energy efficiency and reduce heating and cooling costs. And with the right product and installation, annual utility savings can often make the project investment worthwhile.

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.

Please, enter a valid value

Incorrect values!