Installation Guide

Copyright ©2016 E. I. du Pont de Nemours and Company. All Rights Reserved. K27349 Version 4/16 6
Installation of Integral Flanged Windows in Recessed Openings
Before Water-Resistive Barrier (WRB) Is Installed
Field Preparation of Recessed Window Corner Using
DuPont
FlexWrap
NF
The method illustrated in this bulletin uses 6" wide DuPont
FlexWrap
NF to fabricate
a Recessed Window Corner for a recess that is up to 2" deep with double stud framing.
The same method can be used for recesses greater than 2", and up to 4" deep, which
requires the use of 9" DuPont
FlexWrap
NF. This installation guideline also applies to
single stud framing which is limited to the use of 6" FlexWrap
NF for fabrication of
Recessed Window Corners. See summary of FlexWrap
NF dimensions below and
pictures to right for additional guidance.
6”
2”
9”
3”
1”
Perforation in Release Paper
Line of Release Paper
Line of Release Paper
1’
1’
6" FlexWrap
NF 9" FlexWrap
NF
(for up to 2" recess, single and double stud framing) (for over 2" recess, double stud framing)
The following photos show the fabricated Recessed Window Corners for a recess that
is up to 2" deep with double stud window framing using 6" DuPont
FlexWrap
NF (left)
and a recess that is 4" deep with double stud window framing using 9"" DuPont
FlexWrap
NF (right).
The pictures below show the 6" FlexWrap
NF Recessed Window Corner installed on a
single stud window. Note that the FlexWrap
NF Recessed Window Corner extending
slightly beyond the face of the stud (left) can be fully adhered into framing (right). See
Step B-3 for additional information.