Ok- so I am reading through old posts in our forum and one post says one thing and the next says another. Can anyone give it to me straight and clear? What is the most effective and efficient way at removing oxidation from siding…. brushing or no brushing, bleach or no bleach needed, simple cherry or some other house wash, high pressure or low pressure, and so on?

I am talking about siding that you rub your fingers across the paint and you come back with white chalk on your fingers.

And do the same rules apply to metal or vinyl siding?

Thanks to anyone that can lay it out clearly!