NU-Guard AG Clear, a one-coat, single-pack, external anti-graffiti coating, was used by Ashford Borough Council to protect the Ashford Train mural. Graffiti is removed using only water.

The Council also applied Nu-Cryl® WRS to protect walls from late-night urine attacks. This super-hydrophobic water-repellent treatment is suitable for porous walls and facades and prevents frost damage and organic growth. It also protects against soiling and the effects of acid rain.