Humidity protection will enhance with additional coats, up to six coats or a couple of twenty-mil thickness. Additives or pigments should not be extra to the first coat. Mixing thinners with WEST SYSTEM epoxy is not recommended. A: Ultraviolet radiation will induce most paints and coatings to blush or fade. http://bookmarkja.com/story6836301/the-single-best-strategy-to-use-for-when-were-epoxy-floor-coatings-invented