There are deck restoration products and oil-based wood stains that can help bring back some of the color and shine to your faded Trex decking. However, if your boards are suffering from serious fading due to UV rays or chemical cleaning products, don’t expect miracles. Also, these products are only suitable for use on the older Trex boards, not the capped, second-generation Trex products. 

You can use latex or acrylic paint outdoors. Although acrylic paint tends to last longer outside, it also costs more, so if you’re painting the outside of your house, for instance, latex paint is often a go-to option. However, acrylic will be your best choice if you want to spend some extra money for added durability.

It is not always necessary to remove old stain before restaining a deck. If the previous stain is in good condition and is compatible with the new stain, you may be able to apply a new coat after thorough cleaning. However, if the old stain is in bad condition, flaking, or peeling, it is best to remove it completely to ensure an even surface and proper adhesion for the new coat. Staining over a damaged layer can lead to an uneven finish and poor penetration. For best results, test a small area first and consult the stain manufacturer's guidelines.

For homes in areas with extreme weather, high heat, or intense sun exposure, high-quality acrylic paint is the best option. Acrylic paint is durable, resistant to both heat and cold, and provides a protective barrier with excellent UV resistance. For best results, look for acrylics that contain natural earth pigments, which are better suited for resisting sun damage. While oil-based paint is also durable, it can be prone to fading in high heat and can become too viscous to apply easily in cold temperatures. Additionally, choosing a neutral or light color like gray, beige, or white can help, as these colors absorb less heat than darker shades.