The HLG SYSTEM, allows a easy maintenance (it doesn't require any technical knowledge of graffitti cleaning) and very economic (it doesn't require any special chemical agent, or any heavy equipment like water group under pressure or others).

Simple and economic maintenance.
Respectful maintenance with the environment.

In case outside necessary if the protection has suffered some damage due to a vandalic act with mechanical action, the affected part can be repaired.

Example of maintenance on painted concrete: