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Painting Problems and Solutions

What is it?
  • Measle like rust spots
Possible Causes
  • Rust removing and surface preparation of the steel surface before painting involved a lot of water.
  • The rust free and cleaned bare steel surface was exposed to humid / damp atmosphere for more than 3 hours.
  • Water based or water containing primer or top coat was applied to the cleaned metal and the rust appeared within 30 min. of application.
  • Very rough steel surface resulting in high peaks not adequately covered by coating.
How Can I Fix This Problem
  • Remove paint and rust. Use flash rust inhibiting additive with water. Recoat immediately after surface preparation. Surface must be dry.
  • When using water based primers ensure that the paint contains appropriate rust inhibitor additives and or rust inhibiting pigmentation.
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