Bulles Soufflures

How It Looks

Description of problem

During oven drying, the air withheld underneath the paint in the primer/fillers, the putty, the welding joint, etc… expands and bursts through the paint film.

Causes

  • Bad application of the putty. Putty is applied in thick layers and air allowed to be trapped in.
  • Poor sanding

Preventive measures

  • Apply the putty with the proper application technique.
  • Do not incline the knife at a small angle with respect to the surface as this allows the putty to roll under the knife.
  • Sand the edges well.

Remedy

Remove the paint all the way to the bare metal, clean with Valox (based on phosphoric acid), prime and paint.

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