Next IAQ Club Forum:
Moisture & Leak Investigations
Session Moderator: Jeffrey May, May Indoor Air Investigations, Tyngsborough, MA
Thursday, October 15, 2026
3:30 p.m. – 4:45 p.m. (Eastern)
How it works:
When you register for an IAQ Club Session, not only will you get access to a video and/or audio presentation* from a past education event, you’ll also be able to attend an informal discussion forum** with the original presenter. You’ll find the forums fun, informative, and personal. Each session encourages lively discussion of the scheduled topic (and sometimes other related issues!) Participants can ask moderators and each other questions about current projects and challenges. Each session ends with a fun, interactive trivia quiz. You might win a MIAQC hoodie or t-shirt!
*Like a book club, it is recommended, but not required, that you watch the video or listen to the audio prior to the discussion forum, as it is not shown during the forum itself.
**IAQ Club forums are held via Zoom.
Cost:
Participation in the IAQ Club is free for members in good standing (dues current) of the Maine Indoor Air Quality Council, and just $25 for nonmembers. All participants get advance access to the recorded education session, as well as entry into the live, discussion forum for that topic.
About this month’s featured recording: Moisture & Leak Investigations
(This month’s featured presentation was created in December of 2025 at the annual IAQ & Energy Conference. The recording is 60 minutes in length.)
Moisture and leak problems often lead to indoor air quality issues. Presenter Jeff May has done hundreds of moisture and leak investigations and the purpose of this presentation is to inform participants how to do these types of investigations and what tools are needed. Jeff will highlight many examples of moisture problems in residential buildings, amply illustrated by detailed photographs of his findings. The session includes a look at design errors and construction errors that lead to fungal growth and damage both indoors and outdoors.
What You’ll Learn:
- Useful tools for leak and moisture investigations
- The difference between water vapor vs. water vapor pressure
- Microfungi vs. macrofungi and the requirements for growth
- See dozens of case studies with photos that illustrate issues
- What design and construction flaws and maintenance practices might lead to moisture/leak problems
Who Should Attend:
- Home Inspectors
- Contractors
- Mold Investigators
- Mold Remediators
- Facility Managers
- Public Health Nurses
- Community Health Workers
- Code Enforcement Officers
- Local Health Officers
- Real Estate Appraisers
- Anyone interested in finding moisture and leak problems in buildings of all types
About the Presenter and October IAQ Club Moderator:
Jeffrey May, IAQ Investigator, CIAQP CMC, May Indoor Air Investigations, LLC, Tyngsborough, MA
Jeffrey C. May of May Indoor Air Investigations has been investigating building problems for over 25 years, during which time he analyzed by microscopy over 35,000 air and dust samples. Author or co-author of five books on indoor air quality, including Edition 2 of My House is Killing Me! Jeff has given many presentations to MIAQC. A former adjunct faculty member in the Department of Work Environment at U MA Lowell, Jeff is a Certified Indoor Air Quality Professional, a Certified Microbial Consultant, and a licensed mold assessor in Florida and NH. He holds a B.A. from Columbia in chemistry, and an M.A. from Harvard in organic chemistry. In 2018 he was inducted in the Indoor Air Quality Association’s Hall of Fame.
Continuing Education Credits:
| BPI | Submitted |
| AIHA/ABIH | Self Report |
| PE - Professional Engineers | Self Report |
| USGBC | Self Report |
| BOC | Self Report |
| CEO | to be confirmed |
| Home Inspectors - ASHI | to be confirmed |
| Inspection Cleaning - IICRC | Self Report |
