I tried MEGUIARS CONVERTIBLE WEATHERPROOFER as i could'nt get 303 PROTECTOR and I am totally surprised at the outcome......

My roof used to soak up the rain (it does that a lot here in Scotland) and looked kinda faded when dry. I applied 2 coats of the MEGUIARS on the one off day that it was dry and this morning it was raining and the water is just beading and no longer soaking into roof.....
So good.......

*see pics attached