In order to remove graffiti from a metal surface, the materials that you need include any common paint thinners (such as WD40, lacquer thinner, acetone), graffiti removal products or light penetrating oil. Try wiping them with any of the above-mentioned products.
If it does not work use light sandpaper or steel or bronze wool to gently wipe it off the surface. You can also use the power washing technique at 3000psi water pressure to clean it off.in case it does not work. The most direct and quickest solution is to completely paint over the graffiti works around Sutherland Shire.
2. Wood Surfaces
Whether a wooden surface is sprayed with graffiti, sealed with paint, stain or sealer, use mineral spirits to wipe off the drawings from the wooden surface. However, ensure that the surface was not weathered. Otherwise, the chemicals will be absorbed by the wood driving the paints further down.
You can power wash the surface with 3000 psi pressure, however, make sure that the paint is not driven deeper into the wood.
3. Graffiti on Plastic Surfaces
If the graffiti is sprayed into a plastic surface, use light penetrating oil to wipe it off. Never use paint thinners to wipe them off, since they can soften the plastic and cause cloudiness or permanently damage the plastic surface. You should use steel or bronze wool and gently rub the paint to wipe it off.
4. Masonry Surfaces
Use pressure washer at 3000 psi to wash off the paints from a masonry surface. However, ensure that the tip of the washer is not narrow, or else, it will etch the surface leaving an outline of the graffiti.
Otherwise, you can use sandblasting technique to remove the graffiti, in that case, you need to keep tip moving over the painted area to evade permanently etching the surface.