More on blue stain removal

      Is there a 100-percent-effective method for removing blue stain from pine? 1998.

by Professor Gene Wengert

I have 2000 bd ft of ponderosa pine that has a black/blue stain all the way through it from improper stacking and drying. The wood was stickered but stacked too closely together to allow enough circulation. Is there any way to remove the stain?

I suspect that the stain you mention in the pine lumber (caused by excessively slow drying) is the result of the blue stain fungi, which actually has more dark blue than light blue color. This fungi is colored, rather than a stain of the wood itself, which results in the stain that you see.

You can try to bleach the fungi with a weak to moderate water and Clorox bleach (or similar) solution, taking all necessary safety precautions, including eye protection, skin and clothes protection, ventilation, no residue on plants, or on wood items, etc.

After the bleach has worked on the stain, rinse off the wood. This solution will also bleach the wood, giving the final product a rather bland appearance.

Further, overall, this may not work very well on the stain, however. So, the answer to your question ("Is there any way to remove the stain?") is "possibly, but probably not a very easy or 100% effective method."

Professor Gene Wengert is Extension Specialist in Wood Processing at the Department of Forestry, University of Wisconsin-Madison.

Click on Wood Doctor Archives to peruse past answers.

If you would like to obtain a copy of "The Wood Doctor's Rx", visit the Wood Education and Resource Center Web site for more information.

Would you like to add information to this article?
Interested in writing or submitting an article?
Have a question about this article?

Have you reviewed the related Knowledge Base areas below?
  • KnowledgeBase: Primary Processing: Air Drying Lumber

  • KnowledgeBase: Wood Engineering: Wood Properties

  • KnowledgeBase: Woodworking Miscellaneous: Woodworking

  • KnowledgeBase: Knowledge Base

    Would you like to add information to this article? ... Click Here

    If you have a question regarding a Knowledge Base article, your best chance at uncovering an answer is to search the entire Knowledge Base for related articles or to post your question at the appropriate WOODWEB Forum. Before posting your message, be sure to
    review our Forum Guidelines.

    Questions entered in the Knowledge Base Article comment form will not generate responses! A list of WOODWEB Forums can be found at WOODWEB's Site Map.

    When you post your question at the Forum, be sure to include references to the Knowledge Base article that inspired your question. The more information you provide with your question, the better your chances are of receiving responses.

    Return to beginning of article.

    Refer a Friend || Read This Important Information || Site Map || Privacy Policy || Site User Agreement

    Letters, questions or comments? E-Mail us and let us know what you think. Be sure to review our Frequently Asked Questions page.

    Contact us to discuss advertising or to report problems with this site.

    To report a problem, send an e-mail to our Webmaster

    Copyright © 1996-2018 - WOODWEB ® Inc.
    All rights reserved. No part of this publication may be reproduced in any manner without permission of the Editor.
    Review WOODWEB's Copyright Policy.

    The editors, writers, and staff at WOODWEB try to promote safe practices. What is safe for one woodworker under certain conditions may not be safe for others in different circumstances. Readers should undertake the use of materials and methods discussed at WOODWEB after considerate evaluation, and at their own risk.

    WOODWEB, Inc.
    335 Bedell Road
    Montrose, PA 18801

    Contact WOODWEB

  • WOODWEB - the leading resource for professional woodworkers

      Home » Knowledge Base » Knowledge Base Article