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On a newly cedar sided house I am painting, I have noticed discoloration of the paint film after the paint dried. What could be causing this to occur?

April 26, 2017Cedar discoloration dried Film House newly noticed paint painting sided

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On a newly cedar sided house I am painting, I have noticed discoloration of the paint film after the paint dried. What could be causing this to occur?

1 Answer

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Red-colored woods, such as redwood and cedar, contain a water-soluble dye called tannin. If latex topcoats are applied directly to these wood surfaces, a reddish discoloration may form through the paint finish. Discoloration may also occur on these woods by water migrating to the surface.