Book a free virtual assessment with one of our experts for a fast quote, and find out how to get up to $10,000 in rebates through the Home Efficiency Rebate Plus program.
Our virtual assessments are fast, free, and all you need is a phone - no downloads required.
30-minute video call exploring your home's insulation
Get energy efficiency upgrades that save you money
Fast turnaround on a no-obligation custom quote
Find effective, sustainable insulation options for your home
Improve Home Efficiency with Help from Canada's Largest Insulation Provider
Improve Your Attic Insulation
Attic insulation settles over time, reducing its effectiveness. With a virtual assessment, a GNI specialist can recommend a top-up or complete replacement of your attic's insulation to improve energy efficiency and comfort.
Whole-Home Efficiency
With a virtual estimate, we can recommend energy efficiency upgrades for your whole home. Take a trip down to your basement to learn about your basement, crawlspace, and rim joist insulation levels.
Fast Turnaround, Fast Results
A virtual estimate from GNI can be booked within hours, and you'll receive a quote that lets you move ahead with your project, fast - just like a quote received from an in-person assessment, but without waiting for an available time.
Great Northern Insulation has been improving the energy efficiency of Ontario homes since 1980. Each year, our expert consultants assess more than 15,000 homes across the province. Now, our consultants are available via a video call for fast, expert advice provided faster than ever.
“
When it comes to home energy efficiency, I always recommend checking basement rim joists - many homeowners find they're completely uninsulated and a major source of heat loss in the home!
- Joe
“
Choosing sustainable insulation options adds energy efficiency with the lowest carbon footprint. Our cellulose insulation is made from more than 85% recycled newspaper - right here in Ontario.
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
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
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
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.
Huntsman HEATLOK® SOYA HFO™
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).
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?
Climatizer
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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