A new galvanised surface is generally quite difficult to paint for the following reasons:

• The surface is so smooth that it doesn't provide a good key for paint.
• The steel manufacturer treats the metal to prevent rust. This treatment needs to be removed totally before painting can begin.
  
• Zinc can react with the ingredients in some paints to form salts between the paint and the surface, thus reducing adhesion.

Preparation

New Galvanised Metal Surface

• Rinse down the surface with clean water to remove heavy dust, grit and other organic matter.
  
• Use Dekro Galv-O-Clean Degreaser to further clean the surface.
  
• Rinse thoroughly with clean water.

If the final rinsing water forms a continuous film over the surface then you have succeeded in cleaning the surface sufficiently.

Previously Painted Galvanised Metal
If the existing paint is in poor condition:

• use a suitable concentrated detergent to wash down and remove all traces of grease and other contaminants.

If the existing paint is glossy:

• abrade with a suitable abrasive
  
• dust off.

For product recommendations, advice or enquiries please contact us or call our toll-free help line on 0800 222 423.

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