Maintenance and repair

Maintenance of coated surfaces

We recommend the following procedure for optimal and gentle care of the coated surfaces:

  • Only use pure water, possible with small added amounts of cleaning agents as neutral as possible (pH 5 – 8)
  • Only clean with soft, non-abrasive cloths. Do not rub strongly!
  • First test the cleaning procedure on a non-visible area
  • Rinse with clean water immediately after every cleaning procedure
  • The surface temperature of the coating may not exceed 25°C during cleaning.
    The cleaning agents should also be at room temperature.
  • Do not use a steam or high pressure cleaner
  • Do not use acids or and strongly alkaline cleaning agents
  • Do not use any organic solvents containing esters, ketones, alcohols, aromatic compounds, ethylene glycol,
    halogenated hydrocarbons or similar
  • Do not use any cleaning agents of unknown composition

Repair of coatings

it is generally possible to repair powder-coated parts. A distinction should made here between
the Indoor/Outdoor usage areas.

Interior use

Small damaged areas can be repaired with a touch-up pen. There are touch-up pens for powder-coatings that were mixed with the original powder and so are identical in colour. Liquid and powder coatings can be repaired easily with an acrylic varnish from a spray can or 2 K varnish or artificial resin varnish. Liquid varnishes can also be repaired depending on the varnish condition.

Exterior applications

Two-component poly-acrylates or polyurethane (PU) varnishes are suitable for repairing powder-coated metal surfaces in exterior areas. Minor damage such as scratches will not usually penetrate the coated upper surface. They can be repaired directly with the two-component varnish. However, if the damage reaches the metallic base, then a matched undercoat is needed to maintain the corrosion protection. Using a manufacturer's repair system is always recommended to avoid incompatibility reactions (e.g. wrinkles).

  • There will always be small fault areas at the suspension points of the parts being coated in industrial coating. In the case of corrosion protection specifications, these fault points must be repaired.
  • Repairs with liquid varnish on powder varnish could lead to differences in colour due to different weathering properties.