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Yes - There is Such a Thing as a Sick Building

November 15, 2017

Many office workers in urban environments often complain about feeling ill during the workday. In fact, they believe that their symptoms are present only at work. In extreme cases, experts will refer to this as sick building syndrome. And it’s no wonder – buildings new and old are filled with fumes, off-gases, moisture, and even mold. Worse still, a sick building can impact a worker’s productivity and threaten long-term health. This does not benefit the worker or the company.

Make sure your building isn’t suffering from sick building syndrome

For a landlord, running a sick building can also be an expensive proposition, let alone a health hazard. Statistics show that the North American office worker will spend upwards of 90% of the time indoors. This is a big problem, mainly because indoor air could be five times as toxic as outdoor air. One of the major culprits is off-gassing – that’s the release of airborne chemicals from furniture coverings, wall-to-wall carpeting, and other man-made synthetic materials.

A sick building can also result from mechanical defects in the building envelope – like higher than average air moisture, uncontrollable air leakage, and poorly performing air ventilation. In short, a poorly performing building, in other words a sick building, can cost a company dearly over the long term. On the flip side, a building that is well sealed, well insulated, and well ventilated will operate to its full potential, and provide a healthy environment for both workers and occupants.

For building owners, industry statistics clearly show a good return-on-investment when building performance is optimized. Study after study has shown that the cost of building improvements was well justified based on the payback with worker health and productivity. Simply put, keeping a building healthy, with regular maintenance, and continuing upgrades makes good business sense. At the same time, not meeting these challenges will result in a heavy cost down the line.

For a building to be properly sealed, insulated, and ventilated, building owners must understand the benefits of comprehensive upgrades and retrofits. With a three-pronged approach – sealing, insulating, and ventilating – a building “system” is in place that ensures seasonal comfort, clean flowing air, and controlled levels of air moisture. Needless to say, it’s a “system” that guarantees a healthy building and a healthy workforce – and the benefits are both economic and social.

Creating a healthy building with Great Northern Insulation

Throughout southern Ontario, Great Northern Insulation provides building envelope retrofits for residential, commercial, and industrial clients. GNI offers a wide range of products and services to enhance structural durability, increase energy efficiency, and improve occupant comfort.

For buildings large and small, GNI can do it all – from building diagnostics; to high-performance insulation; to air sealing and weatherizing; to mechanical ventilation. GNI also has the most experienced staff in the business, with the best installer teams and superior technical support.

With GNI, customers are assured of complete satisfaction – with brand name products, superior installations, and prompt project scheduling. To find out more, call the professionals at GNI directly at 1-800-265-1914, or visit the company website at www.gni.ca.

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).


Baeumler ApprovedTM
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.


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?

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