The time and degree of the weathering process depends on exposure to UV light. Fencing that has less exposure to sunlight may take longer to fade. Due to the nature and process of producing composite materials it should be expected that color variation between Trex Composite Fencing components may occur and in some cases may be significant. Trex Fencing is produced from a variety of recycled plastic and wood fibers that may absorb pigments differently. Color variation does not affect the integrity of the product. Variation may be more pronounced with Saddle and Winchester Grey. The colorization process during manufacturing deliberately over-pigments the product to ensure the final weathered color is achieved when it has faded. All three colors of Trex Fencing will lighten over time and some of the color variation may become less noticeable. However, weathering will not eliminate all variation. To minimize the appearance of the variation, extra care should be taken to install similarly pigmented pickets within a given lot code close together, where possible.