Expert: maura macaluso - 9/29/2009

Question
I have an oak table top that has been stained by a leaky flower vase. There are black stains deep in the grain of the wood. I don't think it is practical to sand the top to remove these stains as they are so deep. Do you have any suggestions of chemical agents that would help here?
Thanks a lot.
John


Answer
Hi John,   sorry for the delay in responding, I was away on vacation with no access to e-mail.  I was not supposed to receive questions in my absence but for some reason, your question slipped through to me.  

It sounds like a bit of mold has grown into the wood. You can try oxalic acid available at hardware stores.  follow the manufacturers directions.   If that doesn't work, try hydrogen peroxide.  You will have to play with the strength. start with a 50/50 mix  peroxide and water, apply it only to the damaged area.  If you need to reapply use less water in the mix.  Whenever attempting this, always try it first in a hidden area or on a scrap piece of wood from the same batch.  Thanks for the question and good luck with your project.