2021 Owens Corning Sustainability Report | Expanding Our Product Handprint | Supply Chain Sustainability | 134 SUPPLY CHAIN SUSTAINABILITY PERFORMANCE Scope 3 Emissions Recognizing the variety of activities both upstream and downstream of our operations, we follow multiple approaches to determine the amount of GHG emissions generated throughout our value chain. More information about emissions across our value chain can be found in the Scope 3 Emissions section of the Combating Climate Change chapter and on page 315 in Appendix C of this report. Managing Supply Chain Challenges in 2021 Over the course of the year, Owens Corning teams were affected by a range of supply chain disruptions. Winter storms in Texas, a mine collapse, and lumber shortages caused by the booming U.S. housing market presented unique challenges to our businesses’ supply chains. Owens Corning was able to manage these and other disruptions through strong collaboration across our businesses, sourcing, supply chain, commercial marketing teams, customers, and suppliers, as well as operations and advanced manufacturing. These teams quickly initiated measures to mitigate impact and help ensure that our businesses remain on track throughout the year. By prioritizing suppliers that share our commitment to making the world a better place, we are also doing a great deal to achieve our overall goals. We are consistently gauging our suppliers’ commitment to sustainability as well as their effectiveness in reducing emissions. Supplier Sustainability Survey One of the key ways we gauge the effectiveness of our suppliers’ work in sustainability is through our annual supplier sustainability survey. Each year, we ask a sampling of our suppliers to complete the survey. In 2021, this sample size was 553 suppliers from around the world. Of the suppliers we have surveyed over the past three years, we have received 131 responses, for an overall response rate of 24%. Owens Corning uses the survey data to accomplish the following: ■ Learn how companies perform, including areas where they are strong and where additional support may be required. ■ Highlight areas that need additional attention and follow- up. For example, questions that a company does not answer are treated as a negative response, which triggers direct follow-up. ■ Identify best practices and leading companies that should be considered for an Owens Corning supplier award. Of the suppliers that responded: ■ 98% reported that they meet the standards set by our Supplier Code of Conduct. + Those that could not say that they comply are listed as high-risk, and follow-up management is in place. Owens Corning also surveys suppliers about their policies and goals related to sustainability and safety. ■ 87% of suppliers have organizational goals and policies for safety, and 80% have organizational goals and policies related to sustainability. Many of the companies report on their goals and policies internally and externally, and some publish their data at least annually. ■ 79% have policies in place regarding labor practices and human rights. ■ 58% have policies in place that prohibit forced or child labor. ■ 29% of respondent supplier operations are covered by a certified ISO 14001 or EMAS environmental management system. Photo submitted by: Scott Campen | Knoxville, Tennessee, U.S. Coconino National Forest, Arizona, U.S.