Troubleshooting Caulk Discoloration

      What could be making caulk at the backsplash joint of a new laminate countertop turn pink? July 18, 2008

20 plus years in the business, and this problem eludes me. I have four unhappy campers because their almond caulk has turned pink where we sealed the backsplash and sink. I'm not sure which product - silicon or latex - we used, but in all my years this has never happened. Now within the last four months, four times. Your thoughts?

Forum Responses
(Laminate and Solid Surfacing Forum)
From contributor G:
Are you using smart clips for the backsplash? If so, you shouldn't need to seal in front of the backsplash. We only use clear silicone, unless it needs to be paintable. Other than that couldn't think why it would turn pink.

From contributor S:
Did you change brands of caulk? Or maybe from mold growth!? I've seen caulk turn pinkish in spots that had seen mold, but I can't remember if it was silicone or latex. I think silicone. Some caulks actually have mold inhibitors, but I wouldn't know if they actually work.

From contributor F:
If the top is laminate, try Color-Rite and order the color by the laminate brand name and color number. Color-Rite does exact color match with an acrylic caulk that has a touch of silicone in it. It is paintable and very superior to latex. If you have a solid surface top, try Poly-Sil, a 100% silicone that is available with exact color match and particulate if you want it, also from Color-Rite.

From contributor J:
The caulk is pulling the color out of the glue you are using. Have you changed glues, possibly from natural to red sprayable?

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: Finishing

  • KnowledgeBase: Finishing: General Wood Finishing

    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 © 1996-2017 - 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