Duro-Last Parapet Flashing - Manual

Duro-Last: The Proven Performer®
"Duro-Last" and "The World's Best Roof" are registered marks owned by Duro-Last , Inc.
www.duro-last.com 800-248-0280
DATA SHEET
2009
8
DURO-LAST ® PARAPET FLASHING
Description:
Duro-Last® Parapet Flashing is made with Duro-Last specially formulated
roofing membrane. The combination of reinforced membrane and
prefabrication ensures a long lasting, watertight flashing. The membrane is
available in white, tan, gray and dark gray colors as well as in the Designer
Series membranes (slate gray Shingle-Ply, sandstone Shingle-Ply and Rock
Ply).
Heat welding (hot-air) is used to seam sections of parapet flashing together
and also to seam the parapet flashing to the Duro-Last membrane on the
roof deck. Welds can be made with a hand-held unit or automatic welder.
The flashing can be mechanically attached or adhered to walls. No matter
the method of attachment, mechanical fasteners must be used to secure
roof-to-wall transitions and changes in slope, such as steps in the wall profile.
The example drawings on this page will help in understanding the following
installation guidelines as well as aid in the understanding the fastener tab
spacing that is specified when ordering these prefabricated flashings.
Mechanical Attachment:
If the parapet flashing is to be extended up the wall a short distance and
terminated, such as shown in Example #1, the termination height must be at
least 8 in. above the roof deck. If the termination height exceeds 28 in. at
least one row of fasteners must be used to attach the flashing to the wall as
shown in example #2.
When multiple rows of fasteners are required, such as shown in Example #3,
the maximum spacing between rows, or between a row of fasteners and the
top of the wall, is 28 in.
Refer to the Duro-Last Mechanically Attached Systems specification for
substrate and fastener requirements.
Adhered Attachment:
Parapet flashing may be adhered to the wall with adhesive supplied by
Duro-Last. The minimum termination height is 8 in. above the roof deck. If
the termination height exceeds 60 in., at least one row of mechanical
fasteners must be used.
On tall walls multiple rows of fasteners may be required. The maximum
spacing between rows, or between a row of fasteners and the top of the
wall, is 60 in.
Refer to the Duro-Last Adhered System specification for substrate and
adhesive requirements.