Installation Guide

Minimum 6” overlap
6”-12”
Overlap
Copyright ©2012 E. I. du Pont de Nemours and Company. All Rights Reserved. Rev. 2/12 6
DuPont
™
Tyvek
®
Water-Resistive and Air Barriers Installation Guidelines
Continuity
It is important to maintain the
continuity of the water-resistive
barrier from top to bottom with
proper shingling. Continue
wrapping all the way up the
structure, overlapping the
previous layer of DuPont
™
Tyvek
®
WRB by a minimum of 6”. Wrap
the entire wall surface including
unconditioned spaces.
Gable Ends
Completely cover the Gable End with the
DuPont
™
Tyvek
®
WRB including a 6”-12”
overlap at each corner. Cut away the
excess WRB and tape all seams.
Cantilever Floors
Wrap the DuPont
™
Tyvek
®
WRBunderanduptheCantileveroorandfoldtheDuPont
™
Tyvek
®
WRB up the sides of the Cantilever wall a minimum of 6”. Tape all corners. The
top layer of DuPont
™
Tyvek
®
WRB should go over the bottom layer a minimum of 6”.
NOTE: Make the inside corner as tight as possible using a 1x4 or similar.
Terminations
Lap DuPont
™
Tyvek
®
WRB over all
ashing(e.g.stepashing,wallto
roof intersections and thru-wall
ashings).
Weep screeds and expansion joints
needtobeintegratedwithashings
and the water-resistive barrier.