EPDM Details:D2.7.8-3 Water & Drainage (Clamping Spun Copper Drain)

RoofStar Guarantee Standards are blue-linked

EPDM Details

1) Gypsum Deck Overlay: May be required depending on insulation thickness or when required as a thermal barrier by design authority.
(2) Vapour Retarder: If required by design authority.
(3) Insulation: Mechanically attached. Installed according to RoofStar Guarantee Standards. See available insulation products in the Accepted Materials section of this Manual.
(4) Single-ply Membrane: Installed according to manufacturer's instructions and RoofStar Guarantee Standards.
(5) Mastic: Compatible mastic or sealant.
(6) Membrane Flashing: Adhered according to manufacturer's printed specifications using proprietary adhesive. Thermoset membrane may be joined using uncured tape or proprietary adhesive;

(A) Acceptable Deck
(B) Clamping Copper Drain: Mechanically fastened and coated with adhesive as required by manufacturer. Installed over compatible sealant.

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.

Leader size is determined by design authority using the calculation found in the BC Building Code at Appendix P.7.4.10 and Section 7.4.10.11 (Section 7.4.10.10 for gutters) in conjunction with the 15 minute rainfall value from the National Building Code, Appendix C.