Fitting out your motorhome: All the trades
 #101428  by Pjb
 Sat Oct 17, 2015 6:21 am
Hi does anyone know if there is anything I can use to seal old window rubbers
The problem I have is that I have just repainted and spent many hours polishing aluminum on the body but I'm now noticing black streaks down my nice new white paint from of the window rubbers is there anything I can put on the rubber to stop this ?!?!?
Thanks
 #101443  by david 60
 Sat Oct 17, 2015 7:24 pm
This can be common after a paint then cut and polish. If it wasn't happening before you painted and polished it, then the problem is with what happened in the paint and polish.
What is common, your window rubbers have had a stir up with masking tape and polish. You will probably find the black that is running down your van is an old sun damaged top rubber surface mixed with polish that hasn't stuck and let go which is now running down your van. Wash the rubbers and streaks with soapy water as it happens and hopefully it will stop. Do not use a strong cleaner on new paint, dishwashing is fine. Clean the black streaks as you see them don't leave them they could stain the paint. also don't use silicon it could react with new paint and only collects dust. Depends on what paint you used but some can be soft for months so treat it with care.
Have just read your post properly, you say you polished the aluminum, aluminum has a black film on it, check your rag it will be black.
Hopefully all you have is the polish, black rubber, and aluminium film running down the van, nothing a gental scrub won't fix.

If it wasn't there before you painted it will be the polishing. cheers david
 #101445  by Bearcraft
 Sat Oct 17, 2015 7:56 pm
A trick I used when I had a Bedford bus was to wash the window rubbers and when dry paint them with tyre black. Get a type you just brush on. I would repeat this every few months and it solved the problem.
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