A facing is usually the outer layer of fabric or a coating that’s been implemented as the visible surface of a wall. Facings are typical over such matters as brick, and stone facings are a decorative way to bring a bit of personality to a brick wall to a home. However, even siding over a home is regarded as a facing, and such sorts of materials have to be taken into account when trying to remove any excessive concrete.
Wipe off any moist excess concrete using a moist rag. The more you can get off when the concrete is moist, the easier it will be to take out the concrete that’s left over.
Chip off concrete lumps or blobs using a hammer and chisel. Put on a pair of safety glasses before starting. Based on the magnitude of this residue, use a smaller or larger hammer to apply more force and also a smaller or larger chisel to break up smaller or larger chunks. Little blobs might be taken away just by prying them off using the chisel blade rather than using a hammer. If the surface which the facing resides on is a malleable material. Like plastic or vinyl, use more caution using the chisel so that you do not scratch the surface.
Put on a pair of rubber gloves and apply a non-acidic cement remover. Much like acid, the cement rubbed dissolves the concrete. It can subsequently be brushed using a wire brush or a nylon brush if the facing material is malleable. You might need several programs of this concrete remover, but with each application more and more of this concrete dissolves. When finished, wash the facing with a mild detergent solution. A dish-washing solution works well for this. Rinse when done.