Doming is a process of adding a Urethane and a Catalyst to the top of the vinyl to make a lense or dome over the top. This coating is semi-ridged and completely clear. The mixture goes on as a thick liquid coating spreading to the edges of the vinyl and stopping on its own. After 24 hours, the doming mixture is cured fully and ready for shipping. Our crystal-clear polyurethane doming resins are designed for continuous outdoor exposure. They will not yellow, haze, or crack when used outdoors.