Walls can be washed down with fresh water from a hose or bucket. A solution of fresh water and Tepol or non aggressive detergent, which contains dilute ammonia, may be used to remove heavy deposits from walls, followed by a fresh water rinse.
Water temperature should not exceed 60°C, with a maximum pressure of 1000lbs per square inch.
Stubborn oil or grease stains can be easily removed with white spirit on a soft cloth, followed by an immediate fresh water rinse.
Solvents, cleaners containing abrasives and cleaners in strong concentrations should not be used. Over-cleaning or scrubbing can do more harm than good.
To allow regular washing of panels, it is important that both the design and maintenance of the panel system should prevent moisture collecting in crevices and joints. This is particularly important at the bottom of wall panels, where pollutants from cleaning solutions or from floor soil can cause corrosion problems. This can be achieved by a design which ensures that the edges are folded back and by sealing the edges with a neutral curing silicone sealant.
Slight scuffs are best left untreated. If the sheet has been scratched down to the substrate, it should be repaired with standard touch-up paint. Ensure that the applied paint is no wider than the original scratch. Since touch-up paints are air-drying, they will, over time change colour differently from the original coating, so keep the applied area as small as possible.