Original post by: HelloMacOS

Text:

Hi

I’m no painter or cleaner but I do know that a pressure washer will clean that wall up great as my dad uses one on our car to get all the tar marks off the white paint

And as for preventing it you could wash it everywhere so often whith hot soapy water or buy a varnish or some sort that repels mould and other things that want to stick to it

Thanks

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open