Another group of testimonial pictures sent in by Robert. Robert has a 32 ft which required 6 gallons. He also experienced many areas of the roof where the current caulk had failed, so he purchased 6 tubes of our Butyl MS caulk as well. The Butyl MS caulk always goes down first before the application of the liquid RV roof. The result is customers saving labor costs and material costs since many of the other systems on the market require multiple coats and provide no warranty. Stop recoating your RV after just three years with elastomerics and acrylics and get the product with the industry’s leading warranty. Over a 26-year history of proven success in the marketplace. Regarding dry times, it normally takes about two days above 50 degrees for the material to develop a skin and then 7 days for a full cure. Should the temp drop below 50, you would need to add that time to the overall cure. So, for example, if it drops below 50 degrees over the next 15 hours add 15 hours, to the overall timeframe. The higher your daytime temperature gets the quicker the material will dry. If you get an unexpected shower, no need to worry. Also, in the event of that unexpected shower, the product is already waterproofed. In fact, that ponding rainwater will even start curing underwater! Easily applied with a squeegee and a roller, a 24 ft unit should take you approx. two hours to apply. During your initial cleaning of your RV, you may wish to consider adding 2 cups of bleach to kill any surface mold/mildew along with a standard detergent such as Dawn dish-washing detergent or Simple Green. You will want to be sure that any oils or fats are removed as they will cause the existing EPDM roof to swell. That swelling most of the time will go down but in some cases it will not and that is not covered under warranty.