A nanometre is equal to one billionth of a metre. So much for the theory. In nature there are different examples for water repellence. The most famous is surely the lotus effect. On contact with this type of surface the water forms droplets and picks up all the dirt particles on it. This is exactly where the above mentioned nanometre comes into play.
The micro- and nanoscopic architecture of the surface causes the water repellent effect and minimises the adhesion of dirt particles. certiman® NanoTec Siegelpolish makes use of this effect on the water; it even resists weather related impact and vehicle shampoos. Its nano technology seals the surfaces of your caravan, campervan or RV for up to eight months.