Removing graffiti without damaging the wall
Graffiti is rarely a one-off. A tag left on a gable end, a roller shutter or a boundary wall tends to attract the next one, so prompt removal matters as much as the method. The difficulty is that spray paint soaks into porous brick and stone, and the wrong approach either leaves a ghost of the tag or takes the face off the wall with it.
Graffiti removal starts with identifying the surface and the paint. Brick, sandstone, render, painted metal and glass all need different handling. Most jobs use a suitable remover left to dwell and then rinsed off, often with heat from a DOFF steam cleaning system, which lifts paint from masonry at low pressure. A small test area is done first so you can see the result before the whole tag is treated.
If you are still weighing things up, our guides on graffiti removal cost and removing graffiti from brick go deeper. This page explains the service and how a job is scoped.

