This website was first established in 2015 to provide the public with information about Owens Corning’s request to the Ontario Ministry of the Environment and Climate Change (Ministry) for a site-specific air standard for hexavalent chromium, which was granted on May 6, 2016. The request was made to ensure continued compliance with modified air standards set by the Ministry on July 1, 2016. The plant’s site-specific standard will remain in effect through June 30, 2026.

Through this process, Owens Corning has committed to:

  • Conducting its operations in a manner that protects the public’s and our employees’ health and safety and the environment.
  • Maintaining environmental compliance in accordance with the guidance, direction and oversight of the Ministry.
  • Keeping the City of Guelph and our neighbours informed of our activities, operations and reports to the Ministry.
  • Working cooperatively with our neighbours and the Ministry so that we can continue our operations in the City of Guelph, contributing to the economy and the community.

In support of this commitment, Owens Corning created a Public Liaison Committee (PLC) as a forum to exchange information related to the facility with our neighbours and the broader community. The PLC, which held its organizing meeting in November 2016, meets quarterly. Agendas and summaries of the PLC meetings are posted on this website.


There are no announcements at this time.

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The Owens Corning Guelph Glass Plant is one of 32 composites manufacturing facilities located around the world. Through its Composite Solutions Business, Owens Corning is a global pioneer and industry leader in the glass fiber reinforcements, non-wovens and specialty composite fabrics industry, with a long history of product innovation and customer focus. Reinforcements, such as glass fiber, are used in composite materials to give physical and mechanical properties that traditional materials such as plastic alone cannot provide.

Fast Facts

  • A member of the Guelph Community since 1951; owned by Owens Corning since 1989
  • Owens Corning’s sole composites facility in Ontario as well as Canada
  • Occupies 377,000 sq. ft. on 21.27 acres of land
  • Pays $331,809 in city taxes annually

We Value Our Neighbours

  • Supporter of United Way Campaign – about $10,000 for 2018.
  • Supports Habitat for Humanity with workers and $4,000 from Owens Corning Foundation
  • Volunteers support the local Sacred Heart Catholic School in many ways, including interview coaching, job fairs, entertainment and tickets to local junior hockey team, Guelph Storm
  • Corporate sponsor of Guelph Storm

Our Products

Owens Corning glass fiber materials are found in more than 40,000 end-use applications in the construction, wind energy, water infrastructure, industrial, transportation, consumer goods, and aerospace/defense sectors.




Owens Corning made its site-specific standard request on March 31, 2015, in accordance with Ministry options for compliance with recently modified air standards set on July 1, 2016. Owens Corning notified residents in the vicinity of the Guelph Glass Plant of its plans through letters, public notices placed in the Guelph Mercury and Guelph Tribune, and held two Community Information Sessions. The public’s input was encouraged and all comments received before and after our request were submitted to the Ministry. Those received by the time of our submission on March 31, 2015 were included in the Owens Corning Public Consultation Report as part of our submittal. Significant dates include the following:

September 20, 2016 - Ministry posts Amended Environmental Compliance Approval.

June 22, 2016 - Ministry Approves Amended Environmental Compliance Approval.

May 6, 2016 – Ministry posts Approval for Site-specific Standards Issued Pursuant to s.35 (1) of O. Reg. 419/05'

February 10, 2016 – Ministry posts Notice of Proposal for an Environmental Compliance Approval (ECA) for public comment on the Environmental Registry website. NOTE: The Environmental Compliance Approval is the comprehensive air and noise permit for the site.

December 3, 2015 – Ministry posts Notice of Proposal for a Site-Specific Standard Approval for public comment on Environmental Registry website.

October 2015 – Owens Corning submits Updated Action Plan to Ministry (changes are shown in bold on page 10).

March 31, 2015 – Owens Corning submits formal request to Ministry

March 5, 2015 – Two Community Information Sessions held - see Public Notification

February 17, 2015 - Public Notification posted to Mercury and Tribune

February 14, 2015 – Notification Letters mailed


We welcome your input and feedback.

You can send your comments and questions to us at: or call us at 866-639-6557.