Trex : Investor Presentation - July 2021

INVESTOR PRESENTATION

N Y S E : T R E X

July 2021

SAFE HARBOR / NON-GAAP MEASURES

This presentation contains "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These statements are subject to risks and uncertainties that could cause the Company's actual operating results to differ materially from those contemplated by the forward-looking statements. For further information on risk factors affecting the Company's business, please refer to our most recent annual and quarterly reports filed with the U.S. Securities and Exchange Commission. The Company expressly disclaims any obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise.

This presentation refers to certain financial measures not prepared in accordance with U.S. generally accepted accounting principles (GAAP), including adjusted net sales, adjusted gross margin, adjusted earnings before interest, taxes, depreciation and amortization (EBITDA), adjusted operating income, adjusted diluted earnings per share (EPS), free cash flow, and net debt. We believe that the use of non-GAAP measures helps investors to gain a better understanding of our core operating results and future prospects, consistent with how management measures and forecasts the Company's performance, especially when comparing such results to previous periods or forecasts. The non-GAAP measures included in this presentation are not meant to be considered superior to or a substitute for our GAAP results. Reconciliations of the non-GAAP measures to the most directly comparable GAAP measures are available in the appendix to this presentation.

2

25 YEARS AND COUNTING OF LEADERSHIP

Engineering what's next in Outdoor Living®

Full suite of Outdoor Living products

Strongest industry recognition and awards from home builders, consumers and contractors Sustainable product innovation is in our DNA

Driving conversion from wood

New products for incremental consumers and fueling the DIY spirit

Trex.com and Decks.com command nearly 70% of category web traffic

Leading distributor and dealer network

Strongest distribution channel in the industry

Over 6,700 stocking locations

Strong environmental credentials

Decking made from 95% recycled and reclaimed materials

One of largest polyethylene film recyclers in North America, upcycling waste material into higher-value products

Reduced lifecycle footprint per foot of our decking in every impact category between 2016 and 2019

3

TREX COMPANY STRATEGIC GROWTH DRIVERS

Disciplined investment strategies driving consistent profitable growth

Leveraging the	Expanding	Optimizing	Capital
Trex Brand	Reach	Operations	Allocation
Consumer engagement	Unparalleled distribution	Unique recycling business	Reinvesting in the business
Channel support	network	model	Capacity expansion
Licensing	Contractor	Vertical integration	Share repurchases
Wood conversion	DIY	Cost reduction	M&A opportunities &
	International	Automation, Modernization,	integration
	Trex Commercial Products	Energy utilization, Raw
	material processing
		Consistent improvement in
		manufacturing throughput

4

CAPACITY EXPANSION MILESTONE

Startup of new Virginia production facility

Nearly 200,000 square foot state-of-the-art facility dedicated to producing Trex decking

Proprietary technology focused on quality and energy-efficient systems

Full production capability online in May 2021

• 30 days ahead of schedule

$200 million capital expansion

Investments at both Virginia and Nevada sites

Production capacity increase of 70% compared to 2019 levels

Added approximately 350 new jobs

5