In the laundry-list of home improvement tasks, the benefits of air sealing your home may not at first rank high on your to do list. But imagine for a second: would you ever drive a car with a leak in...
In North America, air leakage in and around the home is the main cause of higher-than-average energy consumption. This results in high natural gas bills and high hydro bills. On the flip-side, a...
Just two weeks ago, Great Northern Insulation partnered with Doug Tarry Homes to build a net-zero ready home in just three days for Project HOPE. From June 9 - 11, over 600 volunteers from the St....
One of the most negative dynamics in a residential home is air leakage - it has more negative effect on home energy efficiency than anything else. From a professional perspective, a home must be...
Beginning soon, Great Northern Insulation will be transitioning from the use of red "Tuck Tape Sheathing Tape for PE Vapour Barrier" to blue Tuck Tape of the same brand. Although commonly used as an...
In a typical home, air leakage is simply a waste of winter heating and summer air conditioning. While most homeowners might seek a remedy by improving insulation, that's really only part of the...
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.
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.
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
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
Great Northern Insulation is recognized as Canada's largest full-service insulation contractor. GNI is 100% Canadian owned, proudly serving Ontario customers since 1980.
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
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
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.
The GNI crew have been featured installing insulation on Love It or List It - have you seen our logo in an episode?
Request a free estimate
Unfortunately, we do not currently offer our services in your location. You can sign up for our
newsletter to be notified of changes to our service area.
You are almost there...
I would like to receive emails from GNI about exclusive offers, promotions, contests, industry
trends, news and more!