Having read the thread regarding what ladder do you use, it led me to do some research into finding a self cleaning product. I have used patio magic with success on my patio and I looked into is there something that will do the same for the caravan roof. I found a product called wet and forget , I called the company and they thought the product would be ok for a caravan roof as there are no chemicals in the product that would damage the caravan but try a small bit first ? The we think it’s ok and try a little bit first is a little worrying so just checking if anyone has any thoughts . Thanks in advance for your replies JeffB