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Polymer Roof Factory,
Manufacture and sales of ABS roofs for
doors, architectural building details and windows
including bow and bay windows C3B and C4B, C5B Bow roof
installation Instructions
Polymer roofs are designed to be
installed with auxiliary casing provided by window
manufacturer or others .See illustration below. This
casing is sometimes no more than a piece of 1”x1” pine
to fill in the space between the platform or head board
and the outer edge of the window and is used to provide
fastening for the roof. Sometimes this piece could be a
little wider to better fill in the space between the
window and the roof or perhaps higher and wider to
provide space for a crown molding.
1, Install Auxiliary casing: install trim strip 2, Caulk surface of flashing and other surfaces of
roof where it meets building and window. 3, These bow window roofs are attached in front by
fitting over trim strip. 4, After the roof has been attached to the window
use galvanized or stainless steel roofing nails to attach the roof
flashing to the building. Use the nail holes provided or drill at least
3/16” holes. Do not nail tight: leave room for expansion. 5, Install the siding: do not nail through the
flashing flange. 6, No other finishing is recommended and may void
warranty. 7, Care must be taken to insure that windows are
installed in accordance with manufacturers instructions including
support by cables or knee brackets to keep windows from sagging. 14 November 2017 j10
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