DFE-3 (WH) cont.. CSI 3-Part Specifications.

Base Flashing and Wall Covering

For load-bearing wood parapet construction more than 24" (610 mm) above the roof membrane

Wall Covering: Position the backer felt so that it will overlap the upper edge of the base flashing a minimum of 4" (102 mm), and will wrap over the top of the parapet a minimum of 4" (102 mm). The backer felt should be nailed at 9" (229 mm) centers in both directions, at the top edge, and at all side laps. The backer felt should not be adhered to the wall. Laps in the backer felt should be a minimum of 2" (51 mm).

Starting just beyond where the wall covering will terminate on top of the parapet, install DynaFlex, using the same application procedures used in the base flashing application.

All vertical joints of the wall covering shall be overlapped a minimum of 4" (102 mm) and be well sealed. Laps in the backer felt and the DynaFlex shall be offset a minimum of 6" (152 mm) from each other. Mechanically fasten the wall covering on 6" (152 mm) centers along the top edge and at the side laps. Fasteners must have a 1" (25 mm) minimum diameter integral cap, or be driven through 1" (25 mm) minimum diameter rigid metal discs.

Cover all exposed nails with a 1/8" (3 mm) thick layer of MBR Flashing Cement, or a 4" (102 mm) wide strip of fiber glass mesh or ply felt embedded in and trowelled over with a layer of MBR Utility Cement. It is recommended that the vertical laps in both the base flashing and the wall covering be similarly treated.

Metal Coping: The metal coping should be installed in accordance with the coping manufacturer�s specifications and details, or in accordance with SMACNA procedures. If a metal coping is not used, the wall covering must be finished with a 4" (102 mm) wide, 1/8" (3 mm) thick layer of MBR Flashing Cement or a 4" (102 m) wide strip of fiber glass mesh or ply felt, embedded in and trowelled over with a 1/8" (3 mm) thick layer of MBR Utility Cement, bringing the cement to a feather edge. This procedure should also be used if the application of the metal coping will be delayed.

Surfacing: DynaFlex requires no additional surfacing.

* Consult a JM Technical Services Specialist regarding the use of Type III asphalt in hot climates.