With over 40 years of experience and more than 300 fulltime employees across its eight locations in Ontario, Great Northern Insulation (GNI) services homeowners and industry professionals in the residential, commercial, industrial and agricultural sectors. GNI offers a complete list of building envelope products and services for new and retrofit projects to increase energy efficiency, comfort, and structural durability. These solutions include insulation, air sealing, fireproofing, panel and cladding, building diagnostics, thermography, and more. GNI's head office is located at 935 Keyes Drive, Woodstock, ON.
As a member of the MillStreet group of Companies, it is our collective vision to be the number one Construction Services Provider in Canada.
For over 40 years, Great Northern Insulation has increased the comfort, energy efficiency and durability of buildings and homes throughout Ontario. Our mission is to provide affordable solutions to each and every customer by reducing their energy costs, improving the acoustics of their living or working environment or addressing their unique fire protection requirements.
We deliver this 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. Our commitment to bring to our customers real value: the right products, prompt scheduling, installed right, guaranteed. Living up to this promise every day has earned the respect and trust of our loyal customers. Over 50% of our residential installations are repeat or referral customers. There is a difference that quality makes. There is more to insulating than just adding insulation. Contact Us today and experience what a true professional contractor can do for you.
In 1980, Great Northern Insulation began serving Southern Ontario offering spray foam insulation, blown-in attic insulation, and sprayed-in-place acoustic and fireproofing fibres. Today, Great Northern Insulation has grown to serve all of Ontario providing an even wider variety of insulation and weatherization services. Locations throughout Ontario; over 300 fulltime employees; 20 field superintendents providing pre and post-inspection services; certified thermographic services; trained blower-door technicians; forensic building science capabilities; EnergyStar trained sales staff; ‘D' and ‘AZ' licensed professional truck drivers; manufacturer trained and certified installers; dedicated Customer Care department.
While anyone can simply install insulation, we firmly stand by the statement that "There is more to insulating than just adding insulation." When selecting an insulation contractor, evaluate your options based on their experience, product expertise, customer service and workmanship. Ensure your next project is a success, contact Great Northern Insulation today.
Conduct a FREE Online Energy Audit of Your Home with the MIT Award Winning My Energy Expert Application.
935 Keyes Drive
Woodstock, Ontario
Canada N4V 1C3
Phone: 1-800-265-1914
Fax: (519) 539-7946
TOLL FREE: 1-800-265-1914
7035 Industrial Drive
Comber, Ontario
Canada N0P 1J0
TOLL FREE: 1-800-265-1914
1027 Elwell Park Road
Gravenhurst, Ontario
Canada P1P 1R1
TOLL FREE: 1-800-265-1914
29 Ferndale Industrial Drive
Barrie, Ontario
Canada L4N 9V5
TOLL FREE: 1-800-265-1914
103 North Port Road
Port Perry, Ontario
Canada L9L 1B2
TOLL FREE: 1-800-265-1914
450 Industrial Dr,
Toronto (Milton), Ontario
Canada L9T 5A6
TOLL FREE: 1-800-265-1914
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
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!
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!
Best of 2019
For the third year in a row, HomeStars ranked Great Northern Insulation at better than 95% for customer satisfaction.
Best of 2020
For four years now, HomeStars has ranked Great Northern Insulation at better than 95% for customer satisfaction.
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.
The GREENGUARD®
Gold Certification promise
GREENGUARD® Gold Certification ensures the strictest criteria for low-level chemical emissions. Certified products are safe for individuals with sensitivities (children/elderly) and safe for use in school environments and health-care facilities. The product certification is widely recognized by the LEED Rating System (Leadership in Energy/Environmental Design).
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.
ECOLOGOTM:
Multi-attribute product certification
ECOLOGOTM is an accredited sign of environmental performance – holistic – green – sustainable - and compliant with strict, third party standards. Life cycle criteria for product certification may include manufacturing and operations; health and environment; product materials and performance; and product innovation, development, and management.
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 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.
I would like to receive emails from GNI about exclusive offers, promotions, contests, industry trends, news and more!
Yes. I'd like to receive emailsNo, Thank you
Your email address will not be shared and your privacy will be protected. You can unsubscribe at any time.
Click here to access the GNI Privacy Policy GNI Head Office: 935 Keyes Dr., Woodstock, ON, N4V 1C3
Please, enter a valid value
Incorrect values!
