2021 Owens Corning Sustainability Report | Expanding Our Social Handprint | Human Rights & Ethics | 279 ■ Human Rights Assessments We have continued to implement our revised environmental, health, and safety (EHS) audit processes, which include on-the-ground visual observations for elements of our human rights policy. In our last EHS audits, conducted in 2021, we proactively assessed five sites for human rights risks, examining documented evidence and making visual assessments where needed. Our 2021 audits included sites, all in the U.S., representing two of Owens Corning’s three business units. All the sites assessed had some type of mitigation plan in safety and health. Our process in these five 2021 audits was modified from our past approach. These modifications were based on both role changes and travel restrictions related to COVID-19. Findings are categorized by risk, and high-risk findings are tracked to completion in a corporate findings repository. All risk findings are required to be closed. There were no issues identified through human rights audits in 2021. Our internal audit team is conducting visual inspections covering forced labor, child labor, unsafe working conditions, and other human rights issues in their on-site assessments in addition to their standard audit process. This expansion is part of our commitment to ensuring that our workplaces reflect the highest human rights standards as well as best practices for health and safety for everyone at our sites, including employees, contractors, and visitors. In 2021, we conducted 19 internal audits on human rights risk. Between our EHS assessments and internal audits, Owens Corning assessed 24 of our sites for human rights risks in 2021. ■ Human Rights and Acquisitions Our human rights policy has become part of our due diligence for potential acquisitions, which are a key element of our growth strategy. This process involves reviewing labor and human rights policies and practices and assessing risks, including evaluating any potential impacts on vulnerable populations such as tribal lands and indigenous people. ■ Facility Security Our approach to facility security has evolved from a focus on property to a focus on people. We now ask how we can make our facilities safe for people, so they can do their best work. We have operationalized our focus by implementing revised security standards for all our facilities. These robust standards provide a common statement of work for all security providers, as well as required training programs on appropriate behavior and use of force. We also have guidelines to help people leaders recognize and respond to potential workplace violence situations and behaviors of concern. Workplace violence training has been translated into 17 languages and disseminated to global sites. Over 95% of all global people leaders and salaried staff have completed the general training course. Photo submitted by: Leila Pourzahedi | Granville, Ohio, U.S. Shannon Falls, Squamish, British Columbia. For sites where we employ third-party security services, we have established a set of standards related to our human rights priorities. Human rights training, including training in the appropriate use of force, is required by all North American contract security providers. In North America, 100% of security personnel, including those employed by third-party organizations, have received formal human rights training. Globally, security personnel at 38% of our sites have received this training. We expect guard services to observe and report — never to place themselves in harm’s way or jeopardize the safety of others.

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