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Mold Remediation and Prevention- ALCTS Webinar

This webinar was presented by Michele Brown, Book Conservator at Cornell thought ALCTS as part of ALA Preservation Week.
Mold is a fungi which reproduces by spores and is found everywhere. They also contain carbon. Mildew is just a form of mold. All substrates can support mold, both inside and outside our bodies. Molds can be very beneficial…and also tasty (think Brie).
As mold grows, it releases enzymes and toxins and it actually digests the substrate it is on. Spores form and become airborne and are very hard to kill. When a spore matures, it is released and has everything it needs to form a new colony. It just needs the right conditions to become active. Inactive mold is hard to remove, but active mold can be easily removed. Good air circulation is very important for preventing mold growth. “Foxing” is a form of mold growth which causes permanent stains in a book, probably is caused by mold introduced when the paper was made. Mold spores cannot be eliminated in the air.
Mold growth on library materials is permanent. Isopropyl alcohol is best as a treatment for inactive mold spores on books. Active mold spores can cause health problems, especially for individuals with low immune function. In order to keep mold out of our collections, we should keep a low relative humidity (40-50 %) and have good air circulation. We should try to keep dust off of our library materials as well. Gift materials should be examined carefully for mold growth. In order to remove mold, one should use gloves, an air respirator and goggles. You should isolate any mold-affected areas, and quarantine the area with plastic if you can. To deactivate the mold growth in an area, you should lower the humidity and allow areas to dry. Inactive mold looks like dust and can then be removed by vacuuming with a HEPA filtered vacuum and wiping with a dry-cleaning sponge. The shelving the affected books were on should then be cleaned with bleach. The environment should then be monitored to make sure mold growth dies not return. Any severely affected books or materials should be discarded.
Mold can develop in as little as 48 hours and should be treated as a health hazard. There is no one chemical that will kill all mold, but alcohol will kill most molds.
Source: Invasion of the Giant Mold spore

3 Comments on ’Mold Remediation and Prevention- ALCTS Webinar‘

  1. Rumana Akter

    Mold is a common occurrence in households and is much more prevalent that you would think. We all recognize mold when it attaches itself to leftover foods in our refrigerator or develops on fruits or cheese very quickly if they are not eaten right away. These molds are easily disposed of and we don’t think much about it, but there are other types of mold that can be serious health risks and getting rid of this mold is much harder.

    Read More: mold elimination,

  2. Courtneyla

    glad to see that this issue is being paid attention too. A mold problem is something one rarely even worries about and it is a silent and sometimes deadly problem. Thanks for bringing it to our attention. best regards…
    boy short

  3. Daniel

    ALCTS is presenting an “RDA Ask-the-experts” webinar on Feb 17th that I’m going to be attending. Looking forward to it.
    Dan with Bay area water damage