26 September 2006
APPENDIX E QUALITY ASSURANCE CONSIDERATIONS
The success of a roof's performance over its expected lifespan depends upon using
qualified designers familiar with local conditions and engaging qualified contractors to
construct the project. Quality Assurance is the determination that the designer and
contractor followed established quality control guidelines.
The NRCA Manual provides excellent guidance. Quality control requirements must be
clearly defined and enforced. The cost and benefits of inspection by a registered roof
consultant (RRC) or a registered roof observer (RRO) should be considered for all
Military roofing projects.
The NRCA Quality Control Guidelines are particularly well suited for reference in
design-build contract requirements where BUR systems are to be constructed. The
benefits of full time inspection through an RRC are particularly high when this type of
contract is used. In addition to inspecting the construction process, the full-time
inspector should review contract documents prior to the commencement of construction.
One of the major decisions in developing a quality roofing system is the choice of roof
type. Many factors will influence a designer's roof choice, and many of these factors will
be regional. A designer and the reviewer should be familiar with these issues and
should reference UFC 3-100-10N General Architectural and Interior Design
Requirements for further guidance if needed. The critical elements are climate, wind
force, resistance to ultraviolet rays, and design for local conditions. In addition to these
critical elements, the experience of the local contractor will greatly affect the quality of
the installation. The design of the roof should be reviewed by a knowledgeable person
such as a RCI.
Once the roof system is designed, the project specifications should be developed. The
UFGS must serve as the basis for the project specifications. Key elements to consider
in development of the specifications are listed below:
Specify a roof SYSTEM -- not just the components -- to assure clear responsibility for
The designer should factor into the design process the ability of the user to maintain
roof. Some roof systems require more maintenance than others. The warranties of
some roofs require inspection at least two times a year.