Graffiti removal

What governs the method

On a dense, non-porous substrate, surface paint may be removed comparatively cleanly. On a porous substrate, pigment and carrier may have penetrated below the surface, in which case no surface method fully removes the staining.

• Paint chemistry and carrier
• Substrate porosity and absorption
• Substrate material and condition
• Age of the graffiti
• Previous coatings or anti-graffiti treatments
• Historic significance of the surface

Where laser cleaning may help

Laser cleaning can be appropriate for difficult residues, sensitive surfaces or situations where chemicals and water are unsuitable. It is not universally superior to other graffiti removal methods and is proposed only where assessment supports it.