Flat Roof Installation: EPDM Membrane (Mechanically Attached)
EPDM is a single-ply membrane that has outstanding resistance to deterioration from heat, ozone, and weather.
Compared to other systems used for similar purposes, EPDM performs especially well in cold weather. EPDM may
be installed in multiple ways. One installation method is mechanically attached, in which fasteners similar to plastic
caps are used to fasten the edge of each course before that edge is overlapped and sealed by the next course.
Mechanical fastening allows some billowing of the membrane. The amount of billowing will depend on the spacing
of the fasteners and the pressure differential between the interior of the building and the exterior surface of the
roof. Always refer to the specific manufacturer’s installation guide for reference.
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