Our review’s Best Choice comes from leading RV accessory supplier, Thetford and is a great value concentrate that cleans and conditions your rubber RV roof a treat. This treatment can be used on its own if your roof is not dirty, or after a clean if the grime has built up. And, as a leave-on conditioner, it’s super quick and easy to use – simply apply the required quantity, spread evenly with a sponge mop, then leave! A blend of Polyolefin compounds, this effective rubber RV roof treatment has anti-static properties that helps to prevent grime sticking and reduces the unsightly ‘roof chalk’ look. It also protects the rubber from UV light and the elements. Each RV rubber roof coating lasts between 3-6 months, depending on your RV use.