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Serving Alberta's Roofing Industry Since 1961
EPDM Section 9: Protected Membrane and Combination Design
A protected membrane roofing design is an
insulated and ballasted roofing system in which the primary
insulation is applied above the E.P.D.M. membrane and retained in
place by ballast.
A combination roofing assembly is comprised of a
conventional insulated membrane system where the primary E.P.D.M.
membrane is covered with insulation held in place with
E.P.D.M protected membrane and combination
designs are not accepted for issuance of the Warranty
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