To make your roof water-resistant, a specialized waterproof coating will be used. In general, roof coatings take between 8-24 hours to fully dry. Some other factors may cause it to take longer, such as high humidity and dry weather. The time it takes will vary depending on the weather condition. High humidity and dew will cause the coating to dry at a slower rate. On the other hand, dry and hot weather will cause it to dry faster. Waterproof Lab EPDM Rubber Waterproofing 22 Plantation Road Ottery, Cape Town 7708 https://local.google.com/place?id=11158029460342935367&use=posts&lpsid=8697137230889784128