Call Now 1.800.265.1914

GNI Management Group Inc. announces acquisition of Isolation Majeau et frère, expansion of services into Quebec

October 04, 2022

October 4, 2022

GNI Management Group Inc. announces acquisition of Isolation Majeau et frère, expansion of services into Quebec

(Toronto, October 4, 2022) GNI Management Group Inc. (“GNI”) is happy to announce the acquisition of St-Esprit-based Isolation Majeau et frère (“IMF”), a leading insulation provider for Montreal and the surrounding area.

“The team at Isolation Majeau impressed us immediately with their attention to detail and professionalism” said Bill Maginas, CEO of GNI. “Our partnership with IMF provides us with the opportunity to bring GNI’s expertise to the Quebec marketplace while expanding IMF’s capabilities.”

“We’re excited for the opportunities that joining GNI will bring,” said Marcel Lapierre, Owner/Operator of IMF. “GNI has been major player in Canada’s construction industry for decades, and their expertise in both the residential and commercial markets will allow us to grow considerably.”

The acquisition of IMF is the first time GNI Management Group Inc. has expanded beyond Ontario since its foundation in 1980.

“Our mission is to build safer, more energy efficient and sustainable communities Canada-wide,” said Maginas. “IMF, with Marcel and his team, represent the talent we will continue to seek out in order to become Canada’s leader in insulation and building science services.”

Ironbridge Equity Partners, GNI Management Group Inc.’s ownership company, is a team of fourteen investment professionals that invest in Canadian lower middle-market businesses operating in a broad range of industries including manufacturing, distribution, and consumer and business products and services. Ironbridge has extensive financial and operational experience and works closely with the management of its portfolio of companies to enhance value.

For more information, contact:

Bill Maginas
GNI Management Group Inc.


4 octobre 2022

GNI Management Group Inc. annonce l'acquisition d'Isolation Majeau et frère et l'expansion de ses services au Québec.

(Toronto, 4 octobre 2022) GNI Management Group Inc. (“GNI”) est heureux d'annoncer l'acquisition de la société Isolation Majeau et frère ("IMF"), basée à Saint-Esprit, un fournisseur d'isolation de premier plan pour Montréal et ses environs.

"L'équipe d'Isolation Majeau nous a immédiatement impressionnés par son souci du détail et son professionnalisme", a déclaré Bill Maginas, PDG de GNI. "Notre partenariat avec IMF nous donne l'occasion d'apporter l'expertise de GNI sur le marché québécois tout en élargissant les capacités d'IMF".

"Nous sommes enthousiastes à l'idée des opportunités qu'apportera le rapprochement à GNI", a déclaré Marcel Lapierre, propriétaire/exploitant d'IMF. "GNI est un acteur majeur de l'industrie de la construction au Canada depuis des décennies, et son expertise sur les marchés résidentiels et commerciaux nous permettra de nous développer considérablement".

Avec l'acquisition d'IMF, il s'agit de la première fois que GNI Management Group Inc. s'étend au-delà de l'Ontario depuis sa fondation en 1980.

"Notre mission est de construire des communautés plus sûres, plus efficaces sur le plan énergétique et plus durables à travers le Canada", a déclaré Maginas. "FMI, avec Marcel et son équipe, représente le talent que nous continuerons à rechercher afin de devenir le chef de file canadien des services d'isolation et de science du bâtiment".

Ironbridge Equity Partners, la société propriétaire de GNI Management Group Inc., est une équipe de quatorze professionnels de l'investissement qui investissent dans des entreprises canadiennes du marché intermédiaire inférieur exerçant leurs activités dans un large éventail de secteurs, notamment la fabrication, la distribution et les produits et services destinés aux consommateurs et aux entreprises. Ironbridge possède une vaste expérience financière et opérationnelle et travaille en étroite collaboration avec la direction de son portefeuille d'entreprises pour en accroître la valeur.

Pour plus d’informations, veuillez contacter :

Bill Maginas
GNI Management Group Inc.

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?

Please, enter a valid value

Incorrect values!