DFE-11, DFE-12. CSI 3-Part Specifications. Large file (>500kB).

	BITUMINOUS FLASHINGS
	Specification DFE-11, DFE-12

Specification DFE-11

General

Note: All general instructions contained in the current JM Commercial/Industrial Roofing Systems Manual shall be considered part of this specification.

Flashing to metal drain

Flashing to Metal Drain: Run the membrane plies to the edge of the drain opening. Prime a 30" (762 mm) square (minimum) piece of lead flashing (minimum 2� lb./sq. ft. [12.2 kg/m²]) on both sides with JM Metal Primer and apply to the roof surface in MBR Flashing Cement, MBR Utility Cement, or hot asphalt. Cover the lead flashing with a layer of modified bitumen membrane sheet, set in MBR Flashing Cement, MBR Utility Cement, or hot asphalt. The modified bitumen flashing piece should extend 4" (102 mm) minimum beyond the edge of the lead flashing, in all directions. The membrane, lead flashing, and flashing piece should all extend under the clamping ring. Attach the clamping ring and tighten uniformly.

Specification DFE-12

Flashing to JM Flex-I-Drain

Flashing to JM Flex-I-Drain: Refer to Section 10 on "Roofing Accessories" for complete installation instructions for Flex-I-Drain. Membrane flashing piece should be a 24" x 24" (610 mm x 610 mm) piece of DynaFlex, applied in either hot asphalt, MBR Flashing Cement, or MBR Utility Cement.

For an identical copy of this specification, ask for RS-4227.