Duro-Last Parapet Flashing User Manual

DURO-LAST® PARAPET FL ASHING

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 a dhered to walls. No matter
the method of attachment, mechanical fasteners must be used to secure

roof-to-wall transitio ns and chang es in slope, such as steps in the wall profile.

The example drawings on this page will help in understan ding the f ollowing
installation guidelines as well as aid in the understanding the fastener tab
spacing that is specified when ordering these prefabricated flashings.

DATA SHEET

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 h eight 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 flas hing 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 faste ners 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.

Duro-Last: The Proven Performer®

www.duro-last.com

"Duro-Last " an d " The World's Best Roof" are registered marks owned by Duro-Las t , Inc.

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800-248-0280

2009