Installation Guide

1
2
3
4
5
5
Copyright ©2012 E. I. du Pont de Nemours and Company. All Rights Reserved. Rev. 2/12 5
DuPont
™
Tyvek
®
Water-Resistive and Air Barriers Installation Guidelines
Installation Instructions
Start at the bottom of the structure to ensure proper shingling throughout the
installation. Proper shingling is required to shed water and to prevent water from
entering the wall system.
STEP 1
UNWRAP roll at corner, leaving 6” to 12” vertical overlap.
Printed stud marks are available on some DuPont
™
Tyvek
®
WRBs to aid in aligning with
the studs. (e.g. studmarks are 8” apart for DuPont
™
Tyvek
®
HomeWrap
®
)
STEP 2
Roll should be plumb. Bottom edge of roll should extend over sill plate interface at least
2”. For maximum air leakage reduction (when installing as an air barrier), seal wrap at
the bottom of the wall with sealant (i.e. DuPont
™
Residential, DuPont
™
Commercial
Sealant or recommended sealant), DuPont
™
Tyvek
®
Tape, DuPont
™
StraightFlash
™
or
DuPont
™
Flashing Tape. Extend to bottom of sill plate for slab on grade foundations. For
stucco exteriors integrate with weep screed.
STEP 3
Secure DuPont
™
Tyvek
®
WRB to the stud or other nail-base material i.e wood sheathing.
Fasteners should be spaced no closer than 6” and no farther than 18” on vertical stud
lines. This may involve penetrating bandboard or other horizontal members to maintain
proper spacing. Use one or more of the recommended fasteners below for use with
DuPont
™
Tyvek
®
WRBs:
• DuPont
™
Tyvek
®
Wrap Cap nails
• DuPont
™
Tyvek
®
Wrap Cap screws
• DuPont
™
Tyvek
®
Wrap Cap Staples for Stinger™*
• 1.0inchminimumcrownstaples*
*Except when installing DuPont
™
Tyvek
®
WRB over foam and other non-nail-base
sheathings.
Please see “Use of Temporary Fastening Methods” later in this guide for more
information on alternative fastening schedules and requirements.
NOTE: Do not fasten within 9” of rough opening head.
STEP 4
Unroll directly over windows and doors. Upper layer of DuPont
™
Tyvek
®
WRB should
overlap bottom layer by a minimum of 6”.
Refer to the DuPont
™
FlashingSystemsInstallationGuidelinestoprepareandash
window and door openings.
NOTE: If windows are already installed, the DuPont
™
Tyvek
®
WRB must be integrated
withpropershinglingwithwindowashings.IfDuPont
™
FlexWrap
™
NF and apron are
used, install the DuPont
™
Tyvek
®
WRB under the apron to ensure proper shingling. If
non-selfadheringsillashingisused,installtheWRBunderthebottomofthesill
ashingtomaintainpropershingling.
STEP 5
All vertical seams shall be
taped with DuPont
™
Tyvek
®
Tape. When
installing as an air barrier,
also tape all horizontal
seams. Taping all vertical
and horizontal seams, and
taping or sealing all
terminations (including,
but not limited to,
roof-wall interfaces and
sill plates) is required
when installing DuPont
™
Tyvek
®
WRBs as air
barriers. Use 3” DuPont
™
Tyvek
®
Tape when taping
horizontal laps of DuPont
™
Tyvek
®
StuccoWrap
®
and
DuPont
™
Tyvek
®
DrainWrap
™
. Use DuPont
™
Tyvek
®
Metalized Tape
when taping DuPont
™
Tyvek
®
ThermaWrap
™
.
STEP 6
After DuPont
™
Tyvek
®
WRB is installed refer to
the DuPont
™
Flashing
Systems Installation
Guidelines, Installation
Instructions for Windows
and Doors AFTER
Water-Resistive Barrier
(WRB) is Installed to
prepareandash
windows and doors.