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Understanding the Different Types of Home Insulation

August 18, 2015

Home insulation has become an indispensable component in new construction, renovations, and retrofitting. Today, with the high cost of winter heating and summer air conditioning, a homeowner is motivated to consider enhanced insulation. Comfort in the home has become a requisite for every homeowner, and while energy costs continue to rise, every effort is made to reduce energy consumption and save on the utility costs. When it comes time to decide on an insulation approach, there are two fundamental things to consider. One is the product choice. The other is the installation. And whether its' the attic or the basement, a quality approach is preferred. Most important, of course, is for a homeowner to be well informed. It means having a sound understanding of insulation; having a good base to converse with a contractor; and making astute decisions.

Foam insulation - the best product on the market today.

Foam insulation (also known as spray foam) is considered by the professionals to be the best insulating product on the market. It delivers more benefits than any comparable product, and can be applied inside walls, under floors, and throughout the attic or roof. Foam insulation is sprayed into a given space where it expands and hardens to completely fill a cavity. One application effectively provides an air barrier, vapour barrier, and insulator at one time.

Blown-in insulation: available in cellulose or fiberglass.

Blown-in insulation (exactly as the name implies) is commonly used in the attic. Without getting overly technical, this insulation is available in cellulose or fiberglass compositions, each with specific product advantages. Industry professionals agree that the cellulose option delivers a higher R-value than fiberglass per unit of measurement. Both products provide excellent insulation where installed and both are fire resistant (cellulose is fire retardant - fiberglass is fire resistant).

Blanket wrap: foundation blanket insulating system.

Blanket wrap insulation is designed primarily to insulate concrete basements, while reducing installation time and the associated cost. The product is considered to be a high-performance insulator, conforming to regional building codes, and suitable in a wide variety of applications. Blanket wrap insulation provides a continuous vapor barrier when installed, and helps reduce air leakage. It's a product that easily wraps around, and can be cut and custom-shaped to fit.

Fiberglass "batt" insulation - those fluffy pink panels.

Fiberglass "batts" are a popular insulating product for wall assemblies. The "batts" are pre-cut to fit specific widths, and are manufactured with fiberglass content, thus providing reliable R-value and effective energy efficiency. This product is naturally non-combustible, making it an ideal installation for the attic. The "batts" do not absorb water or moisture, and will serve well as a sound absorbing material between rooms and floors throughout the home. Apart from product and installation decisions, one aspect of insulation that's often overlooked is removal. Whatever the reason or scope, insulation removal is best handled by an expert. There may be mold and mildew throughout - there may be water damage - there may be animal or insect contamination. And in a worst-case situation, the existing insulation may be hazardous (asbestos or vermiculite). Here, the best approach is the professional approach.

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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