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DESCRIPTION

Development of a yellow cast in aging paint, most noticeable in the dried films of white paints or clear varnishes.

POSSIBLE CAUSE

 

  • Alkyd/oil based paints, because of their curing mechanism, tend to yellow, particularly in areas that are not exposed to sunlight.
     

  • Oil-based varnishes start with an amber cast and will darken with age.
     

  • Heat from stoves, radiators, and heating ducts.
     

  • Lack of light, for example, behind pictures or appliances and inside closets.
     

  • Tobacco staining or other environmental contaminants.
     

  • Moisture.

 

SOLUTION

See Lead Information.
         

  • If there are no other problems and the yellowing is not offensive, repainting is not necessary.
     

  • Repainting using a latex paint will reduce the amount of yellowing, but if the environmental conditions that caused the previous coating to yellow continue, any new coating will likely yellow as well.


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