DFE-7, DFE-8, DFE-9. DFE-10. CSI 3-Part Specifications. Large file (>500kB).

Specification DFE-7

General

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

Curb mounted roof-to-roof expansion joint cover

Expansion Joint Cover: Application of the base flashing is outlined in Specification DFE-1 (NLB). Install and splice Expand-O-Flash in accordance with the installation instructions provided with the product.

Prefabricated intersections, as well as horizontal-to-vertical transitions, are available to complete the Expand-O-Flash installation. Refer to Section 10 on "Roofing Accessories" in the current JM Commercial/Industrial Roofing Systems Manual.

Specification DFE-8

Flashing to prefabricated curb

Prefabricated Curb: Refer to Flashing Specification DFE-1 (NLB) for detailed instructions on application of the base flashing. Base flashing felts should extend as far up the prefabricated curb as practicable, but not less than 8" (203 mm). Install the flashing receiver and metal counter-flashing in accordance with the prefabricated curb manufacturer’s specifications and details, or in accordance with the DFE-8 detail.

Specification DFE-9

Plumbing vent flashing

Plumbing Vent Flashing: Prime both sides of the flange of the lead boot with JM Metal Primer. Set the flange into a bed of MBR Flashing Cement, MBR Utility Cement, or a mopping of hot asphalt. Cover the flange with a layer of modified bitumen membrane sheet, set in MBR Flashing Cement, MBR Utility Cement, or hot asphalt. Roll the top edge of the lead boot down into the pipe a minimum of 1" (25 mm). Minimum weight of lead sheet: 2 � lbs. per square foot (12.2 kg/m² ).

Specification DFE-10

FP-10 One-Way Roof Vent

FP-10 One Way Roof Vent: Cut a 5" (127 mm) diameter hole in membrane. Remove all or part of the insulation, as necessary to facilitate venting; replace with loose insulation to prevent possible condensation. Apply a layer of MBR Flashing Cement or MBR Utility Cement around the 5" (127 mm) hole and press the vent flange into place. Flash in the vent with a layer of modified bitumen membrane sheet, set in MBR Flashing Cement or MBR Utility Cement.

Note: Hot asphalt may be used in lieu of the MBR Flashing or Utility Cements to set and flash in the vent, however, do not mix the two methods of application.

 

 

For an identical copy of this specification, ask for RS-4226.