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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

Southwestern Ontario

7035 Industrial Drive
Comber, Ontario
Canada N0P 1J0

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

GTA East

103 North Port Road
Port Perry, Ontario
Canada L9L 1B2

TOLL FREE: 1-800-265-1914

GTA & 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


259 Campbell Street
Sarnia Ontario
Canada, N7T 2H3

TOLL FREE: 1-800-265-1914

Niagara Region

6260 Don Murie St
Niagara Falls, ON
L2G 0B4

TOLL FREE: 1-800-265-1914


Great Northern Insulation - Better Business Bureau Profile.


Best of 2017

From reputation to responsiveness, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thanks to everyone for the great ratings! 

HomeStars 2018

Best of 2018

For the second year in a row, HomeStars consistently ranks Great Northern Insulation at better than 95% for customer satisfaction. Thank you again to everyone!

Homestars Best of 2019 Award

Best of 2019

For the third year in a row, HomeStars ranked Great Northern Insulation at better than 95% for customer satisfaction.

Homestars Best of 2020 Award

Best of 2020

For four years now, HomeStars has ranked Great Northern Insulation at better than 95% for customer satisfaction.

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

Enenrgy Savers

Energy Saving

Energy saving and energy efficiency is easier than one might think. Great Northern Insulation helps to identify performance issues, while taking advantage of improvement opportunities.

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

WALLTITE® ECO™ is a high-performance system, professionally installed by certified and approved specialists. Its C.C.M.C. approved (Canadian Construction Materials Centre) - with product quality guaranteed - and with installation by highly trained experts with the technical know-how to do the job right, the first time.

Insulthane Extreme

Insulthane® Extreme

For the ultimate in high performance spray foam insulation, Insulthane® Extreme is the professional choice for residential, commercial, and industrial application. With improved thermal performance over other products, Insulthane® Extreme has an exceptionally low Global Warming Potential (GWP). Considered environmentally friendly, this next generation spray foam insulation is non-ozone depleting, and exceeds specifications of other HFC product alternatives.


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).


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Professional, Certified and Insured

Baeumler ApprovedTM gives you peace of mind when connecting with contractors, trades and home service providers. All Baeumler Approved members have demonstrated high quality work for customers and other trade professionals. Members must also have Workers Compensation, liability insurance of at least $1,000,000 and prove professional certification.

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 Energy Conservation Program provides incentives of up to $1,600 to customers who achieve energy efficiency and fuel savings – and Great Northern Insulation can pave the way.


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The GNI crew have been featured installing insulation on Love It or List It - have you seen our logo in an episode?

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