Many homeowners often ask us if there is a way they could test for mold themselves in their homes. Although we recommend seeking professional help there are some simple tests that a homeowner can perform if mold growth is not extensive.



Testing For Visible Mold Growth Using Clear Scotch Tape

Clear scotch tape can be used to sample visible mold.

• Cut 2-3 inches of the tape and press it gently onto the surface with visible mold growth.


• Peel the tape off the surface and stick it onto a plastic bag (e.g., ziplock bag)


• Put the sample into an envelope and then send to Mold & Bacteria Laboratories for identification. For $45 per sample the laboratory will tell you the type of mold present on the sample and whether it is a type considered to be of health concern. If you are sure the mold covers less than 10 square feet, you can clean it yourself (with proper protection) after fixing the moisture/water source. For large amounts of mold growth, we recommended you seek professional help. For detailed instructions on how to take tape samples download the document Homeowner Form.

Testing For Airborne Mold Using Agar Settle Plates

If you can't see mold but have persistent musty or earthy smell, you may consider testing the air for mold. Musty or earthy smell is often an indication of microbial growth such as mold and some type of bacteria. A homeowner can perform preliminary tests using agar settle plates before calling a professional. Download the document "Air sampling for mold using agar settle plates" for detailed instructions on how to perform this test. You can obtain the agar settle plates from Mold & Bacteria Consulting Laboratories.