Installation Guide

Copyright ©2016 E. I. du Pont de Nemours and Company. All Rights Reserved. K27349 Version 4/16 10
Installation of Integral Flanged Windows in Recessed Openings
Before Water-Resistive Barrier (WRB) Is Installed
B-2 Prepare DuPont
™
Tyvek
®
WRB Frame for Window Installation
A. Cut two 45 degree slits extending a minimum of 8" up and away from the top
corners of the rough opening. This will create a flap to expose sheathing or
framing members to allow head flashing installation.
B. Flip the head flap up to expose the sheathing and temporarily secure with DuPont
™
Tyvek
®
Tape.
C. Temporarily secure the DuPont
™
Tyvek
®
WRB frame with DuPont
™
Tyvek
®
Tape
around rough opening before flashing is installed to help facilitate flashing
installation.
NOTE: In lieu of temporarily taping, the DuPont
™
Tyvek
®
flap at the window head can be
tucked under the DuPont
™
Tyvek
®
WRB frame.
8”
A
B
C
B-3 Install DuPont
™
FlexWrap
™
NF Recessed Window Corner at Sill
A. Place FlexWrap
™
NF Recessed Window Corner into corner of recess so exposed
butyl is against face of recessed window frame and adhere.
NOTE: For double stud window frames, the FlexWrap
™
NF Recessed Window Corner
should extend a minimum of 2" onto the face of the recessed window frame and cover
the seams between the studs. For single stud window frames, the FlexWrap
™
NF
Recessed Window Corner extending slightly beyond the face of the stud can be fully
adhered into framing.
B. Remove remaining release paper.
C. Adhere exposed butyl to sill and jamb surfaces of recess.
D. Fan FlexWrap
™
NF at bottom corners onto DuPont
™
Tyvek
®
WRB frame on face of
wall. Coverage of FlexWrap
™
NF should be 2" to 3" onto the face of the wall.
E. Place a bead of DuPont
™
Residential Sealant or recommended sealant behind the
loose triangular flap within the FlexWrap™ NF Recessed Window Corner.
F. Press down the loose triangular flap onto the sealant.
A
D
E
F