Deck with a curved layout, dining area, relaxation zone, and built-in firepit.

Tag composite decking thickness

Trex Deck Board Dimensions: A Complete Size Guide

Collage of Trex deck boards in various colors and wood-grain finishes forming a seamless pattern. Overlaid text reads “Trex Deck Board Dimensions: A Complete Size Guide.” Image represents the variety of Trex composite decking width, tone, and texture options available for modern outdoor spaces.
Understanding Trex deck board dimensions helps you plan a durable, beautiful outdoor space. This complete size guide covers board widths, thicknesses, and lengths for every Trex collection - Signature, Transcend, Select, and Enhance - so you can choose the right decking size, balance structure and design, and build a professional-quality deck that lasts.