Asked on May 22, 2016

Question about tannins bleeding through on this painted table

HELP! I forgot to put down my Zinsner Seal Coat prior to starting to stain my table. I'm not sure how old this table is nor do I know what kind of wood. My question is... After I get done doing my staining technique of the dogwood art, could I put that Seal coat down on TOP of the stained piece and would that stop any tannins from coming through??
  3 answers
  • Darla Darla on May 22, 2016
    Any finish coat you put on - sealer, wax, varnish, tung oil or polyurethane - should stop tannins from coming through. As long as the wood is dry, tannins shouldn't ruin anything anyway, Why are you worried about it?
    • See 1 previous
    • Sandy Nunez Sandy Nunez on May 28, 2018

      I had kitchen cabinets installeD. Now after a few years there is a white film bleeding through the stain. I can wipe it off, but it keeps coming back. Any way to stop it permanently?

  • Okay, I think that your question is just a little confusing about what your intentions are, but correct me if I am wrong - You have stripped this table and are now doing stain art, on which you do not want tannins to come through? If so, then no. A seal after the fact would not stop them from coming through the stain. Staining through finishes happens because there is a solvent action that occurs between the tannins in the wood and whatever you are applying. For example, paint can dissolve the tannins and reactivate them. Then when the paint dries, those reactivated tannins wick up through the paint. So, if the stain dissolves those tannins, as it dries and cures they will begin to show. A sealer on top won't do anything for what is below. But tannins are usually only concerning if painting. However, I feel like I am still confused on what exactly you are doing. You wouldn't use a sealer prior to staining, you would instead use a conditioner. Is it your intention to prevent blotchiness?Are you perhaps trying to stop the grain from showing through your artwork, or is there something else going on that I am not getting from the information above? Guess I should have asked that before giving the answer above. :-) but if you can clarify, I m sure that we can help you.
    • See 4 previous
    • M&M Embellishments M&M Embellishments on May 22, 2016
      Wonderful! You have helped me a lot! A LOT!!! I really appreciate it! I need to make myself a binder and printout all this information I learn from friends like you because my old brain doesn't absorb things like it should! :) I think the sanding sealer will be perfect for me because when I sand too quickly (before 6 coats of water- based poly, it takes some of the design/ stain) I'm going to go find you and become a stalker ;) Thanks again!!!
  • Darla Darla on May 22, 2016
    If you are using wood stain, it's made to use on wood, including oak and other tannin-rich woods. I use stain sealer on soft woods like pine and most plywood so the stain will go on evenly and not blotchy.