my roof on my m3 has been looking a bit faded and stained for a couple of years now and sfter forgetting to treat it last year the mold and stains were realy bad. so i did some research and renovo roof dye seamed the best for the job.i watched there own video and it looked so simple,haha.
so first up i soaked the roof in the cleaning agent and then used a nail brush 20 min after to get the dirt out.
then i parked it in the sun to dry out.
then when dry moved it back in the shop and started applying the dye the instructions said wipe any surplus off paintwork with damp cloth what a lod of rubbish this stuff went everywhere and dried on the paint.