EPDM 1.3.1-1 Conventionally Insulated System (mechanically attached)

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EPDM 1.3.1-1 Conventionally Insulated System (mechanically attached)

Division D - Construction Details

EPDM 1.3.1-1 Conventionally Insulated System (mechanically attached)

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EPDM Details


1) Gypsum Deck Overlay
May be required depending on insulation thickness or when required as a thermal barrier by design authority.
(2) Insulation
Mechanically attached. Installed according to RoofStar Guarantee Standards. See available insulation products in the Accepted Materials section of this Manual.
(3) Single-ply Membrane
Installed according to manufacturer's instructions and RoofStar Guarantee Standards.
(4) Adhesive
Proprietary, installed according to manufacturer's instructions, usually brushed, rolled or sprayed.
(5) 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.
(6) Fasteners
Install according to manufacturer's instructions (style may vary depending on material type and manufacturer's specification).
(7) Membrane Lap
EPDM (thermoset) membrane may be joined using uncured tape or proprietary adhesive.
(8) Metal Cap Flashing
As required by the 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: See the Standard for additional requirements.

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