If water alone doesn t work try using a spray bottle full of water with a few drops of dish soap to wet the concrete.
Remove concrete from metal siding.
The paste keeps the splatter from sticking and does not allow the concrete to etch the metal.
While preventing buildup while you work is the best defense you cannot always do so.
A number of sugar based commercial products are available to remove concrete.
Its mild acid and foaming agent also dislodge unwanted concrete deposits from glass metal most plastic painted and wood surfaces.
To treat a large amount of concrete spatter these are safer to use than the traditional solution of muriatic acid.
Any splatter can then be removed with a water hose making the cleanup extremely easy.
Applying a concrete dissolver is one tactic used to soften old mortar on masonry tools equipment and vehicles.
Then scrape off the concrete gently with a putty knife.
For siding that has a porous or faux wood grain spray the affected area liberally with white vinegar to soften the concrete while scrubbing it away with a stiff bristled brush.
For areas with a large amount of splatter using a putty knife may not be feasible.
In addition to aluminum this process can be used for galvanized metals block brick and metal building panels.
Step 3 keep the wand horizontal or angled downward.
It may be helpful to wet the concrete which helps to soften and loosen it from the siding.