Well, when looking for a RV coating, you first want to be sure it is one that is used specifically for the industry and has been tested. Also, quick dry time and some technical properties such as tensile strength and elongation are very important since you are driving your unit. Also, from a cost savings perspective, you want to look for a product that is a one-coat system and in particular, a product that can go on all types of roofs. Many of us, particularly those who had purchased a used RV, have no idea what type of roof or coating was applied to their roof. RVroofMagic can go on any RV roof type.