30 | July 2019
a sweep as needed. Check to be sure that the dryer hose is
intact and exhausts to the exterior (or exclude that in your
report). Older recessed lights can also be leaky.
In a house with hot-water or steam heat and a separate
air-conditioning system in the attic, supplies and returns
should be closed in the heating season, especially near a
bathroom; otherwise, passive airflows can carry moisture
into an attic air handler (as well as the duct system). If
there is dust in the system due to inadequate filtration,
mold will grow.
Founder and Principal Scientist of May Indoor Air Investiga-
tions LLC in Tyngsborough, MA (www.mayindoorair.com),
Jeffrey C. May combines his education as an organic chem-
ist and his over twenty-five years of experience investigating
building problems to specialize in indoor air quality (IAQ). He is
a former Adjunct Faculty Member in the Department of Work
Environment at University of Massachusetts Lowell, and is au-
thor or co-author of four books on indoor air quality (published
by The Johns Hopkins University Press), including My House
is Killing Me: The Home Guide for Families with Allergies and
Asthma. Jeff is a nationally recognized speaker at annual con-
ferences for the IAQ Association and the Maine IAQ Council,
among others. He is a Council-Certified Microbial Consul-
tant (ACAC) and a Certified IAQ Professional (AEE), and is
licensed in the NH and FL as a mold inspector/assessor. Jeff
holds a B.A. from Columbia College (chemistry) and an M.A.
from Harvard University (organic chemistry). See http://www.
mayindoorair.com for details about Jeff's company's services,
and www.myhouseiskillingme.com for more information about
Jeff's publications and work. You can contact Jeff at jeff@may-
indoorair.com or call 978-649-1055.
Refer your clients to my book
My House is Killing Me!
We expect Edi on 2
to be published in 2020
by The Johns Hopkins University Press.
i
