™ DuPont Tyvek Water-Resistive and Air Barriers Installation Guidelines ® DuPont Tyvek Water-Resistive and Air Barriers Installation Guidelines ™ ® HELPING YOU GET THE JOB DONE RIGHT FOR BUILDINGS LESS THAN 5 STORIES REVISION 2/12
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines Table of Contents Applicable Products Applicable Products........................................................................................................... 2 Water-Resistive Barriers (WRB) Necessary Materials.......................................................................................................... 3 PRODUCT Code Requirements..................................................................................
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines Water-Resistive Barrier (WRB) Code Requirements Flashing Products PRODUCT DIMENSIONS AREA DuPont FlexWrap NF 6 in x 75 ft 9 in x 75 ft 37.50 sq ft 56.20 sq ft DuPont™ StraightFlash™ 4 in x 150 ft 9 in x 125 ft 50 sq ft 93.75 sq ft DuPont™ StraightFlash™ VF 6 in x 125 ft 62.5 sq ft DuPont™ Flashing Tape 4 in x 100 ft 6 in x 100 ft 9 in x 100 ft 33.33 sq ft 50.
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines Special Considerations 1. When performance requirements exceed ASTM E1677, 65 mph equivalent structural load and 15 mph equivalent wind-driven rain water infiltration for buildings less than 5 stories, it is recommended to install a high pressure skirt to help prevent water intrusion at the sill or threshold and follow the DuPont™ Flashing Systems Commercial Installation Guidelines. 2.
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.
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines Continuity 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. 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”.
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines Penetrations There are many types of penetrations including dryer vents, bathroom exhaust fans, exterior electrical outlets, exterior lights, gas lines, etc. Seal around all electrical, HVAC and plumbing penetrations with DuPont™ Flashing Systems products, DuPont™ Tyvek® Tape, DuPont™ Residential Sealant, DuPont™ Commercial Sealant or recommended sealant.
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines Tilt Wall Instructions STEP 1 Unroll and secure DuPont™ Tyvek® WRB over the wall panel. Leave enough lap to ensure a minimum 6” overlap of the DuPont™ Tyvek® WRB on all sides except top of the wall. These flaps allow for a DuPont™ Tyvek® WRB-toDuPont™ Tyvek® WRB seal with adjacent sides. When taping, make sure the stud marks printed on the DuPont™ Tyvek® WRB line up with the first stud and that the roll is plumb.
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines DuPont™ Flashing Systems Integration If windows and doors have not been installed reference the DuPont™ Flashing Systems Installation Guidelines, Installation Instructions for Windows and Doors AFTER WaterResistive Barrier (WRB) is Installed to prepare the rough opening. STEP 2 A. Tape all seams as shown. DO NOT TAPE at bottom of window. B. At the head, continuous tape seams as shown with DuPont™ Tyvek® Tape.
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines Facade Considerations Water-resistive barrier performance is dependent upon the ability of the facade to drain. The following must be considered for specific facades. Stucco When stucco is installed over wood-based sheathing, the 2009 International Building Code (Section 2510.6) and the 2009 International Residential Code (Section R703.6.
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines Use of Temporary Fastening Methods Fastener selection and fastening schedule is a function of holding power during exposure and durability while in service. DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines require the use of cap fasteners (nail, staple and screw) or 1” crown staples as the means for permanently attaching DuPont™ Tyvek® WRBs.
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines Key Installation Requirements for Wraps Continuity It is important to maintain the continuity of the WRB throughout the building envelope. The entire wall surface shall be wrapped, including unconditioned spaces. Special attention should be given to ensure a proper 6’’ overlap at all terminations, seams, penetrations, and transitions to maintain a continuous downward drainage plane and WRB.
DuPont™ Tyvek® Water-Resistive and Air Barriers Installation Guidelines PROPER OVERLAP FOR WATER MANAGEMENT A. Lap all components from bottom of the wall to the top of the wall B. Treat the walls of the building just like a roof Copyright ©2012 E. I. du Pont de Nemours and Company. All Rights Reserved. Rev. 2/12 NOTE: A condition of the DuPont 10 year Limited Warranty is compliance with the Installation Guidelines for DuPont Weatherization Products.
Technical Specifications Note DuPont™ Tyvek® WRBs used in construction products are made from 100% flash spunbonded high density polyethylene fibers which have been bonded together by heat and pressure, without binders or fillers, into a tough, durable sheet structure. Additives have been incorporated into the polyethylene to provide ultraviolet light resistance.
