The Trex product receives heavy pigmentation during manufacturing to allow it to settle into a lighter shade when weathered. Under normal conditions, twelve to sixteen weeks of exposure to sunlight and rain are typically required for Trex to achieve its weathered color. This process is completely harmless to Trex composite fence material and does not affect its durability. The post caps and top rail will weather the fastest because of their direct exposure to the elements. Because of their vertical orientation, the pickets and post faces may take considerably longer to weather. Due to the nature of composite materials, it should be expected that color variation between individual components may occur and in some cases may be significant.
Trex Fencing is produced from a variety of recycled plastics and wood fibers which absorb pigments differently. While all colors of Trex composite fence panels may contain variation, it is typically more pronounced with Saddle and Winchester Grey. The three colors of Trex Fencing will lighten over time and color variation may become less noticeable. However, weathering will not eliminate all variation. Where possible, extra care should be taken to install similarly pigmented pickets in a section to minimize the appearance of variation. Color variation and weathering do not affect the integrity of the product and are not covered under the Trex Warranty.