01 May 1999
be used at membrane terminations at the end of a day's work to seal the roofing system from water
c. Shop Drawing Submittals. Drawings of flashings, edge restraints, and other critical items
should be provided. These should be detail specific and dimensioned not the manufacturer's standard
detail plates. Spacing of fasteners for termination bars and types of fasteners appropriate for the
substrate being anchored to should be shown. For mechanically fastened systems, layout of fastening
to comply with required wind resistance should be provided. Require Material Safety Data Sheets
(MSDS) for adhesives and primers.
d. Design Submittal Requirements and Checklist.
(1) Manufacturer Assurance. Require manufacturers to verify in writing that the proposed
system is compatible with the roof deck, vapor retarder, fasteners, and insulation and is appropriate for
this specific application.
(2) Application Manual. Require submittal of foreman's application manual. Discuss any
e. Field Review and Observation.
(1) Inspection. Full time visual inspection by qualified field inspectors is recommended. On
large projects require that the manufacturer's technical service representative be present at startup to
train inspectors and installers. A copy of the foreman's handbook should be provided to the field
(2) Layout Placement of each membrane panel should be recorded on a roof plan for future
reference. Verify that each panel is identified as fire rated (FR) if such a rating is called for. Note
whether additional fastening or ballasting is being done in corners and perimeters.
(3) Protection. It is easy to puncture an elastomeric membrane during ballasting if heavy
buggies run over pieces of stone.
(4) Ballasting. Measure ballast load as ballasting proceeds. Adjust the ballast to stay within
10% + of the required load.
6-5. MAINTENANCE CONSIDERATIONS.
a. General. EPDM is very weather resistant but is attacked by solvents, greases, oils, and fats.
this is impossible, replace the degraded EPDM in these areas with a manufacturer recommended
chemically resistant system such as polyepichlorohydrin or neoprene. Avoid bituminous repair
materials. Follow the procedures in the joint NRCA/ARMA/SPRI and RIEI maintenance manuals.
b. Repair or Replace. To endure, EPDM repairs must be carefully done. Surface oxidation and
dirt must be abrasively removed and the area washed and primed. New membrane material is
installed in adhesive or tape.
Shrinkage problems are handled following NRCA/MRCA
recommendations: Repair Methods for Re-Attaching EPDM Membrane and Flashing Experiencing
. This provides for cutting the membrane loose where bridging
or wrinkling has occurred,
reattaching the membrane, splicing-in extra membrane material, and resealing the system.
Repairs: Emergency, Temporary, and Permanent. (Refer to NRCA/ARMA/SPRI Manual)
(1) Emergency repairs. Repairs can be made using peel and stick elastomeric materials, duct
tape, or even asphalt mastic. If asphalt mastic is used the contaminated area will have to be replaced
when making a permanent repair.