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Rainbow Effect on Wolf Oven Glass Window


  • Blue, green, purple hue or streak on the oven glass window
  • What causes the rainbow effect on the oven door glass?
  • Oily residue on oven glass


A rainbow effect on Wolf electric or gas oven glass results from a tin oxide coating placed on the inside of the glass.

  • The coating is used to reflect radiant energy or heat from the interior back into the unit.
  • This helps maintain a cooler oven door exterior temperatures.
  • This is a normal condition.
  • Replacement glass parts will have the same rainbow appearance or condition.
Refer to the product Use and Care Guide for further information.


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