Are you a subscriber but don’t have an online account?

Register for full online access.

 
 
 
 
+ Reply to Thread
Results 1 to 5 of 5
  1. #1
    Join Date
    Dec 2005
    Location
    Brookfield, Western CT
    Posts
    256

    Default White cottony mold on drywall ?

    Renovating a condo basement storage area and found this funny looking white mold on parst of the ceiling. It's pure white, and cottony looking.(first two pics)
    Any ideas what it might be from and/or the best way to handle it?
    The rest of the remediation is "normal" black mold from moisture problems (TBD) - pics 3 & 4. Any comments or recommendations (other than calling EPA) appreciated.

    JoeH
    Attached Images Attached Images
    Last edited by oldguy; 02-16-2009 at 08:31 PM.
    JoeH

    There Aint No Such Thing As A Free Lunch (TANSTAAFL) -Robert A Heinlein

  2. #2
    Join Date
    Dec 2005
    Location
    Brookfield, Western CT
    Posts
    256

    Default Re: White cottony mold on drywall ?

    Add'l pics of "normal" mold.
    Attached Images Attached Images
    JoeH

    There Aint No Such Thing As A Free Lunch (TANSTAAFL) -Robert A Heinlein

  3. #3
    Join Date
    Oct 2008
    Location
    Rumson, NJ
    Posts
    379

    Default Re: White cottony mold on drywall ?

    Each variety of mold has its own ideal growing conditions. When basements get wet, there are always differences in moisture content of the substrate, relative humidity of the air, and temperature. All of these will favor one species of mold over another.

    As far as the cleanup goes, it doesn't really matter what type of mold is there - all porous materials have to go. If you are not familiar with safe cleanup techniques (PPE, negative air pressure, isolation of workspace, etc.), have a reliable remediation company do the demo and cleanup, then you can come in and do the repairs.
    All complex problems have a simple solution. That solution is invariably wrong.

    Peter Engle, PE
    Almost Home, Inc.
    www.almosthome.com

  4. #4
    Join Date
    Jun 2004
    Location
    Des Moines, Iowa
    Posts
    3,846

    Default Re: White cottony mold on drywall ?

    Joe

    Just got back off of vacation; took some reading with me.
    Books on mold; a lot to know and be aware of, a lot more than I thought.
    Here is one for you;
    “All Fungi are spore producing. Some spores are asexual and some are sexual that result from meiosis. Spores enter a very low metabolic state after they are formed, and are heavily protected from desiccation and toxins by a relatively impermeable chitin containing wall. The two primary functions of spores are to tide over unfavorable periods, and to disperse the fungus to new food sources (read as reproduction). Some can survive very high temperatures. Some can survive for hundreds of years. Spores can also survive large exposures to both man made and naturally produced toxins. Spores are not easily killed by disinfectants, (forget the bleach). Imagine a fumigant that kills 99.9% of the Aspergillus spores from a colony covering a four-inch circle. Assuming 12,000,000 spores in the colony, the fumigation would leave 12,000 viable spores to start new colonies. As you see 99.9% is not good enough in this case”
    (Quoted from the book, The Illustrated Mold Handbook)

    You do need to follow Pete's advice and get someone in there that knows what is going on, keep us posted on how you proceed and what you find.
    Mark Parlee
    BESI(building envelope science institute) Envelope Inspector
    EDI Certified EIFS Inspector/Moisture Analyst/Quality Control/Building Envelope II
    Level one thermagrapher (Snell Training)
    www.thebuildingconsultant.com
    www.parleebuilders.com
    You build to code, code is the minimum to pass this test. Congratulations your grade is a D-

  5. #5
    Join Date
    Dec 2005
    Location
    Brookfield, Western CT
    Posts
    256

    Default Re: White cottony mold on drywall ?

    Mark and Peter
    Thanks for the guidance. I've recommended that the cleanup be done by a qualified mold remediation specialist. I'll go in and make the appropriate repairs after that's done.
    And so on to the next one.........
    JoeH

    There Aint No Such Thing As A Free Lunch (TANSTAAFL) -Robert A Heinlein

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts