Mercedes is prior to impregnation of the vehicle is not necessary, but it has annoyed me that the roof has soaked every time it rains with water and it took a long time until it was dry again.
A wet canopy should not necessarily open and pack so wet in the top compartment yes.
After a quick shower you do not want as convertible drivers but have to wait "forever", to the top is quite dry again, before it again "wraps".
So now I use the impregnation spray from Dr. Waak and would recommend it gladly.
The rain drips even after months even from great. After a quick shower we just drive a few hundred meters a bit faster and the water beads flutschen from the roof. The water does not penetrate / hardly one and the canopy dries very quickly.
Let the sun shine 'in!
Even now liable in winter / freezes the snow barely on the roof.
I will at the same time for product images try to upload a picture that I have just made from the roof. As you can very well see the just melted snow as water pearls.
