The Reflex liner sets up the minute it hits the surface. Still, we let it cure for a couple of hours after spraying to give us a chance to enjoy some of those cold ones we had in the cooler. As far as the body is concerned, the entire outside is finished! It's got new paint, a new bedliner, and a new undercoating. We focused next on finishing the interior by adding Dynamat Extreme insulation and sound deadener.