NRCA began issuing technical bulletins on an as-required basis in 1977 as a means
of keeping the roofing industry informed of developing or late-breaking technical
issues. In most instances, the bulletins have dealt with matters of special urgency
or importance to the industry.
NRCA's technical bulletins are intended as addenda to the current edition of The
NRCA Roofing and Waterproofing Manual. Information from past bulletins typically
is incorporated into the manual's next edition or is withdrawn because the information
no longer is relevant.
To date, NRCA has issued 20 technical bulletins. Relevant information from these
bulletins has been included in the fifth edition of the manual.
The following technical bulletins apply to the first three editions of the manual.