MJ Building Envelope Solutions Inc. is an independent sales firm located in Milton, Ontario, representing building construction and building envelope products in various regions across Canada.

Our product representation includes:

  • Commercial roofing systems
  • Roofing accessories
  • SunWave daylighting systems
  • Deck support products
  • Vegetative roofing systems
  • All types of metal roofs, soffits & wall systems

Specialties Include:

  • TPO Roofing Membranes
  • EPDM Roofing Membranes
  • Isocyanurate Insulations
  • SunWave DayLights
  • Modified Bitumen Roofing Membranes
  • Metal Roofing Systems
  • Green Roofing Systems
  • IsoGard HD Cover Boards
  • Fluid Applied Membranes and Roof Coatings
  • Parking and Playground Accessories
  • Deck Support Systems

We also represent various roofing accessory products that are designed to complement your existing construction project.


Mary R. Smith
Mary R. SmithPresident
Mary has 10 years of construction sales and sales management experience with both Firestone Building Products in their roofing division and Hilti construction products in both Canada and the USA. Prior to opening MJ Building Envelope Solutions, Mary worked directly for Firestone Building Products as their Eastern Canada Sales Manager. Mary holds a Bachelor’s degree in Chemical Engineering as well as a Master’s degree in Business Administration. Mary participates in various construction industry associations, including RCI Inc. and CSC Toronto Chapter. Mary has completed the PCD course through the CSC and intends to pursue her CTR designation.
Jean LeBeau
Jean LeBeauPresident
Jean has over 30 years of experience in the commercial construction & roofing industry and has worked in various technical & sales positions on both manufacturer and contractor sectors. Jean has extensive experience in roof management, design review, compliance, installation techniques, inspection & quality assurance. Jean has also participated in various construction industry associations committees, including Board of Directors for CRCA & MRGNB. Jean is also currently a member of the CSC Grand Valley Chapter.
Teri O'Connor
Teri O'ConnorOffice Manager
Teri has more than 15 years of office administration and customer service experience in the manufacturing and consulting industries. Teri is currently a member of the Canadian Institute of Bookkeeping, certified as a bookkeeper. Upon joining the team at MJ Building Teri had not previously worked in the roofing/building envelope industry. Eager to expand her knowledge Teri attended the Contractor Quality Training Seminar provided by Firestone Building Products Canada in 2014, as well as other product training sessions provided by manufacturers represented by MJ Building Envelope Solutions Inc.
Bob Bossenberry
Bob BossenberryArchitectural Sales Executive
Bob has been involved in the Industrial, Commercial and Institutional roofing industry since 1986 and has considerable experience in specifications, design, inspections, problem solving, estimating and training in methods of application. Bob has also assisted in product standards testing with Underwriter Laboratories and the National Research Council as a manufacturers’ representative. Bob is a member of the CSC Hamilton/Niagara chapter and continually strives to be innovative and remain current in new technologies within the roofing industry.
Michelle Gaudon
Michelle GaudonArchitectural Sales Executive
Upon completing her Bachelor of Environmental Studies (Hons.), Michelle entered directly into the green roof industry as the Maintenance Manager for a green roofing company in Toronto, ON. Responsible for coordinating and managing the green roof maintenance operations on over 130 projects, she has been deeply immersed in the green roof and construction industries for over 3 years. She has taught Advanced Green Roof Maintenance for Green Roofs for Healthy Cities and is pursuing a Horticulturist Diploma to stay current in the environmental industry. Michelle joined MJ Building Envelope Solutions Inc. eager to expand her building envelope experience and knowledge.
Dan Baleem
Dan BaleemArchitectural Sales Coordinator
Upon completing his Bachelor of Commerce degree, Dan began his journey within the Sales Development and Marketing career path with a wide variety of industries. This has allowed Dan to use the sales skills developed through his career by liaising with contractors, architects, and consultants. Dan’s current endeavors are submission for alternate product consideration on construction projects for manufacturers represented by MJ Building Envelope Solutions.