EPDM Details:D2.7.1-2 Assemblies (Ballasted Protected Membrane)

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EPDM Details:D2.7.1-2 Assemblies (Ballasted Protected Membrane)

RoofStar Guarantee Standards are blue-linked
EPDM Details


(1) Protection Mat
Provide protection between concrete deck and membrane with installation of manufacturer specified and RGC accepted protection mat or deck overlay boards.
(2) Single-ply Membrane
Installed according to manufacturer's instructions and RoofStar Guarantee Standards.
(3) Adhesive
Proprietary, installed according to manufacturer's instructions, usually brushed, rolled or sprayed.
(4) Membrane Lap
EPDM (thermoset) membrane may be joined using uncured tape or proprietary adhesive.
(5) Fasteners
Install according to manufacturer's instructions (style may vary depending on material type and manufacturer's specification). May vary from drawing.
(6) Membrane Flashing
Adhered according to manufacturer's printed specifications using proprietary adhesive. Must be carried to outside of parapet or minimum 200 mm (8") above finished roof surface. Adhered to primary membrane.
(7) Insulation
Mechanically attached. Installed according to RoofStar Guarantee Standards. See available insulation products in the Accepted Materials section of this Manual.
(8) Filter Fabric
Metal base flashing required.
(9) Metal Flashing
As required by RoofStar Guarantee Standards.
(10) Ballast
Gravel or concrete paving tiles.

(11) Parapet Flashing: As required by RoofStar Guarantee Standards.


(A) Acceptable Deck
(B) Acceptable Parapet Surface
Surface must be smooth, dry and clean. Rough surface must be covered with treated plywood, to be determined by design authority or inspector or as required by manufacturer.
(C) Sloped Wood Blocking

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.

RoofStar Guarantee Standards for EPDM Roof Assemblies

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