Runs or Sags

Runs or Sags

Runs or sags






  • Heavy paint build up due to incorrect spraying viscosity, spraying technique, flash off times between coats and film thickness
  • Defective spraygun nozzle or incorrect spraying pressure
  • Temperature of the paint, substrate or spraybooth too low
  • Incorrect choice of hardener and thinners



  • Follow application recommendations on the Protec technical data sheets
  • Ensure that your spraygun is in good working order
  • Warm object and keep room temperature above 20ºC.



  • After topcoat has hardened thoroughly, remove the runs and sags using a tungsten block and sand paper then polish with approved cutting compound
  • Sand and respray if necessary.

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