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Painting Problems and Solutions

What is it?
  • Fine blisters resulting in lifting and los of adhesion from the substrate. Corrosion products like rust are generally present inside of blister.
Possible Causes
  • Not using a corrosion resistant primer under a topcoat.
  • Insufficient coating system thickness.
  • Failure to remove contaminants ie. Rust, salts, chlorides, oil and dirt. prior to painting.
  • Applying a coating system not suited to corrosion conditions. Corrosion resistant coatings are generally less permeable, contain functional pigments and posses excellent adhesion and flow properties.
How Can I Fix This Problem
  • Remove defective paint.
  • Remove rust and contaminants from metal substrate.
  • Select an appropriate coating for the substrate type and exposure conditions
  • Ensure that surface finish/texture is as per coating system requirements.
  • Recoat surface in the prescribed time and during the correct weather conditions
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