I would like to repaint a rusty ramp. Is there not a product to pass to dissolve the rust and the day before painting and switch to Karcher®? Then finish with brushing to eliminate the rest.
There are indeed strippers that are applied by brush, let it act a few hours to a day, with the possibility then to eliminate all using a high pressure machine. But rust particles will always be present. Manual brushing will remove a good part of it. To prevent the return of corrosion, you can apply a colorless rust remover (which replaces the famous Minium.) It is a fatty, low viscosity varnish, composed of alkyd resins and vegetable oil that forms a protective film flexible on the metal.You can apply on top, after drying, a conventional solvent or water phase paint for the outside (longer drying).In the absence of this treatment, you can apply a "special iron" paint, with high wetting power, some of which can even be used directly on rusted substrates.
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