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  1. #1
    Join Date
    Sep 2008
    Posts
    3

    Default yellow (sap?) coming through paint

    I custom made the trim and baseboard for our 1882 home...primed and painted. Now, after about 2 years, there are yellow streaks coming through the wood. Is this sap? Was the wood not dry? Is there a primer that will entirely seal the yellow in?

  2. #2
    Join Date
    Aug 2007
    Location
    The Great White North
    Posts
    4,045

    Default Re: yellow (sap?) coming through paint

    What type of wood was used for the trim .... pine , poplar , fir , etc. ?

    Knot free lumber?

    What primer/sealer and paint was used?
    "" an ounce of perception -- a pound of obscure "
    - Rush

  3. #3
    Join Date
    Aug 2007
    Posts
    612

    Default Re: yellow (sap?) coming through paint

    Sounds like bleedthrough from a knot in the wood. I seal these with shellac before painting. Can you post a picture?

  4. #4
    Join Date
    Sep 2008
    Posts
    3

    Default Re: yellow (sap?) coming through paint

    It was knot-free pine.
    Primer was Sherwin-Williams PrepRite ProBlock Interior/Exterior Latex Primer/Sealer.
    Paint was Behr Plus Ultra Pure White Interior Semi Gloss.

  5. #5
    Join Date
    Sep 2008
    Posts
    3

    Default Re: yellow (sap?) coming through paint

    I will keep trying to get a picture to post...not showing up very well.

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