11 January 2007
The appropriate personnel shall determine the applicability of warranties prior to
performing repairs to roof components or systems. If a warranty is in effect, the
warrantor (contractor or manufacturer) should be contacted for recommendations
as to the correct course of action. Warranties typically require this notification for
both repairs and alterations, and any work performed must meet the warrantor's
requirements in order to preserve the status of the warranty. The standards
defined in this UFC assume that there are no warranties in effect.
The generic standards defined in this UFC represent established procedures
known to be successful within the roofing industry for the majority of commonly
available roof components and systems. The user is advised to ascertain the
manufacturer of a roof component or system if possible prior to performing
repairs in order to obtain technical information on the specific materials to be
repaired and the appropriateness of proposed repair methods and materials.
Manufacturer's technical information is particularly useful for repairs to single ply
and modified bitumen systems, which tend to be more proprietary than traditional
built-up roof materials.
Qualifications of Personnel
Roofing work by its nature can be difficult and dangerous for inexperienced,
untrained workers. The repair standards and procedures cited in this UFC
require varying levels of competency and training in order to be effective. The
use of hot asphalt, torches, and solvent containing materials is common to roof
repair work and misuse or lack of training on the part of workers can create more
problems than solutions. The user shall ensure that qualified personnel are
assigned or contracted to accomplish the repair work.
Hierarchy of Repair Work
Spot repairs, general repairs, and major repairs are commonly recognized
classifications of repairs and the general level of effort required for accomplishing
the work. Refer to the Introduction section of the Roof Repair Manual for Low-
Slope Membrane Roof Systems for a detailed description of these classifications.
Personnel responsible for making decisions related to assigning or contracting of
repair work shall consider these classifications and the impact of considerations
noted in 1-5.1 through 1-5.4 of this UFC.
Identification of Existing Roofing Components and Systems
Proper identification of the type of existing roofing materials and construction is
crucial to the eventual success of the selected repair work. Assigning or
contracting experienced, trained personnel and compiling proper documentation
of the existing conditions shall be considered essential to the process of selecting
a repair method specified below. Refer to the Identification Matrices for built-up,
modified bitumen and single ply roof membranes in the Introduction section of