Have used this product on the cloth roof of a two year old MINI Convertible, it was no longer available impregnation, the roof has at every downpour soaked with water like a sponge. Cleaned it was with the Convertible cleaner the same company. Have the dry roof sprayed three times and the can is estimated still 1/4 full. Also have only the car premeditated cover with foil, but that was not necessary, what should the disk come to the paint / wipe simply quickly with a cloth. Is it already dried you just have to spend a little more time, it can still remove well. After application in the wash bay, it has of course the same rain on the way home, it formed again individual drops on the roof, as it should be. Due to the simple and rapid processing I will buy more of this product.