Attic ventilation is one of the most widely publicized yet
misunderstood concepts in the roofing industry. As a result, many
attics fail to have proper ventilation or may not be vented at all.
This is unfortunate because attic ventilation, when required, is an
important component of a quality roof system. To help roofing
professionals understand ventilation issues, I will discuss NRCA
recommendations, some industry design guidelines and a sampling of
available ventilation products. (For the purposes of this article,
it is a given that an attic space should be vented.) I also will
provide information about manufacturers and their related products
and recommendations as a service to readers. Inclusion of a
manufacturer's product or recommendation in this article does not
imply endorsement from NRCA nor does NRCA possess or maintain any
information about these products' performance records.
Moisture from within buildings generally originates from one of
two sources: construction processes or building...
Log in or register for FREE access to this article and other Professional Roofing online content.