Good and Bad Woods for Pressure-Treating

      Here's a list of wood species that accept preservative treatments readily, and wood species that don't. July 11, 2013

I have some white pine 6x6 posts that I would like to get pressure treated. Yesterday I heard from a forester that white pine does not lend itself well to pressure treating. Is that correct? If so, why?

Forum Responses
(Sawing and Drying Forum)
From Professor Gene Wengert, forum technical advisor:
Except for the red heartwood and knots (red or black), I also would be interested to hear why it cannot be treated well. In fact, I believe that it might absorb quite a bit of chemical, which is expensive, but provides outstanding protection. Note that for large timbers, only the outside is treated heavily; the core is often not treated much at all.

Here is a list of easy-to-treat species:
green ash
red oaks
river birch
slippery elm
white ash
Douglas fir (coast)
eastern white pine
ponderosa pine
red pine
southern pines
sugar maple
western hemlock
yellow birch

Hard to treat:
eastern hemlock
grand fir
pine noble fir
western larch
white fir
alpine fir
black locust
Douglas fir (Rocky Mountain)
western red cedar
white oaks

From contributor B:
Eastern white pine does treat quite readily. There are a couple published papers in the literature which document this, and a treater in Maine who used to, and may still, do a fair volume commercially. Be sure the MC is below 25%.

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: Knowledge Base

  • KnowledgeBase: Primary Processing

  • KnowledgeBase: Primary Processing: General

    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