Call Now 1.800.265.1914

Air Sealing Larger Industrial Properties

May 02, 2016

For large buildings to be energy efficient, well maintained, and comfortable for occupants, airflow must be properly controlled. Airflow, particularly in large spaces, carries moisture throughout a space. This has various impacts on the building "envelope", including indoor thermal energy and interior air quality. It's therefore key to control airflow, and here, one of the principal approaches is the installation of air barriers. Professionally expedited, high performance air barrier systems will substantially reduce air leakage, thus ensuring enhanced energy efficiency (and savings). Air sealing a building "envelope" significantly reduces energy consumption in large buildings. The bigger debate is how best to implement a project of this size - the effort must be results-driven and cost-effective. As it is, industry research shows that air leakage accounts for about 1/3 of energy usage in industrial buildings. And while new construction certainly specifies air barrier requirements, existing buildings don't have the same guidelines. So for professional contractors, the principal objective is to gauge the potential energy savings that will derive from air sealing. The bottom line in reducing building "envelope" air leakage is to "capture energy savings". Again, it's the professionals who must diagnose the nature and extent of the air leakage, and then come up with a viable plan that ensures consequent (and meaningful) energy savings. Industry wide, the principal strategy here is the implementation of air barriers. Effective air barriers will have the most influence on heat flow and moisture flow - the elements that most effect energy use and efficiency. As for the building owner, the project savings must justify the project investment. Importantly, air barrier systems serve to separate indoor air (conditioned air) from outdoor air (unconditioned air). And in larger industrial buildings, the additional benefit as a fire, smoke, and fume barrier adds value to the project. Consequently, it's critical to choose an air sealing method that will achieve the utmost, and deliver the maximum. This is where spray foam insulation can deliver it all - an effective air barrier system; airtightness in every cavity, joint and seam; added structural integrity; and the highest thermal performance (R-Value) of any insulation product. A professional insulation contractor must guarantee that an installed air barrier system will keep outside air from creeping into the building, and prevent inside air from leaking out. Cold climate or warm, air infiltration and exfiltration must be effectively controlled. Moreover, performance must be ensured well after installation, with an expectation of longevity during the lifespan of the building. Once again, it's the spray foam insulation that meets all of the challenges, performing as a combination air barrier and vapor barrier, and without the need to replace or replenish. Great Northern Insulation has the team of experts to assess and implement large-building energy retrofits. With a focus on air sealing, and with state-of-the-art diagnostics, GNI can meet and exceed the expectations of both building owners and facility managers. As specialists in building science, the team at GNI professionally evaluates the building "envelope", identifies air leakage and moisture dynamics, and designs the solution package that delivers the optimum 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.

Please, enter a valid value

Incorrect values!