Ball State University
Department of Natural Resources and Environmental Management

 

Indoor Environment Notebook

About Thad Godish, Ph. D.






Submit your question

Search the archives

Home

 

 


I work in a building with ceiling tiles that have been stained by water. Some of them look moldy and in fact one is directly over my head. When I come to work I begin to experience a variety of sinus problems. Could those ceiling tiles be responsible? -- Nosey

Repeatedly wetted ceiling tiles provide an excellent medium for growth of mold, one of the most common causes of allergy and sinus infection. A single six inch spot on a ceiling tile with active mold growth can liberate thousands to tens of thousands of spores per day.

Whether one develops symptoms or not depends on the type of mold present and its relative abundance. It also depends on whether your immune system will respond to the mold or molds that you are exposed to. The closer you are to the mold infested tiles the more probable that (if you have become sensitized) you will develop allergy-type symptoms.

Good operation and maintenance practice in a building would be to remove and replace all water-stained/mold infested ceiling tiles and correct the water leakage problem responsible. In removing ceiling tiles, it is important that maintenance personnel exercise due caution. Some black-stained ceiling tiles are infested with Stachybotrys chartarum, a mold species that produces a very potent mycotoxin.

In removing such ceiling tiles, the infested surface should be lightly misted and placed in a garbage bag and sealed prior to disposal. The use of a plastic drop-cloth should be used to minimize contamination of building surfaces.

Returning to your original question, the position of the moldy ceiling tile over your head and the sinus symptoms you experience at work strongly suggest that exposure to airborne mold is the likely proximate cause of your building-related sinus illness problems. The infested tile as well as other infested ceiling tiles in your work area should be removed and replaced.

(Jan. 6, 2000)




Last Modification: 08/09/01 | Technical comments to the Webmaster