Trex 2025 Sustainability Report

2025 SUSTAINABILITY REPORT

INTRODUCTION

PRODUCTS

ENVIRONMENT

PEOPLE

LEADERSHIP

SUPPLEMENT

19

ONE COLOR SPRUCE

ONE COLOR BLACK

ONE COLOR

WASTE AND WATER

Waste Diversion From Landfill

The Trex efficiency program drives us to continually work to reduce the amount of water our manufacturing operations use and the waste we send to landfills. Our strategy employs advanced technologies, proven best practices and ongoing process improvements. LOGO USAGE

Partnerships to Divert Purge

across facilities and optimizing dumpster haul schedules are now priority action items. Based on the audit findings, we worked with our existing vendors in 2025 to increase the proportion of our scrap metal and pallets that we recycle. We also broadened the range of materials that Trex employees can recycle and made our single- stream recycling program accessible in more Trex locations. For example, team members can now recycle discarded personal protective equipment such as ear plugs, safety glasses and vests. We project that these and other enhancements will divert an additional 490 tons of waste from landfill annually.

Purge—a byproduct of waste PE reprocessing—accounts for a portion of our non-hazardous waste each year. In 2025, we continued our relationship with Reworld, a materials management company, to divert purge from landfill for conversion into energy. Through this process, nearly 821 MWh of electricity were generated, contributing to the energy grid that supplies Trex operations in Virginia. In 2025, we diverted 1,579 tons of purge to Reworld, down from 3,933 tons in 2024. This decrease reflects the launch of a new 2025 program to repurpose a portion of our purge into the production of fence posts, further advancing circular use of materials. Collectively, these efforts diverted 60% of purge from landfill.

As part of our landfill diversion strategy, nearly all the scrap composite materials from our manufacturing are recovered and re-incorporated into our processes—forming a circular “closed- loop” system. In 2025, we completed a third-party audit of our waste streams to better understand both the volume and types of waste generated across Trex operations. The audit identified our highest-impact waste streams and helped prioritize diversion opportunities. Scrap wood, metal and line start-up materials emerged as key areas with significant potential for improved diversion. As a result, standardizing waste management practices

In 2026, we will strengthen our new-hire orientation and training to emphasize internal recycling procedures.

Waste Disposed and Recycled (Tons)

2025

2023

2024

16,934

Non-hazardous waste disposed

16,041 3,860

17,112

8,204

Non-hazardous waste recycled (including energy recovery)

7,528

0.1

Hazardous waste disposed

0.3

0.1

86.8

Hazardous waste recycled (including universal waste)

43.0

76.7

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