DuPont™ Flashing Tape
Helps Seals Against Air and Water Intrusion Around Windows and Doors
DuPont™ Flashing Tape
Helps Seals Against Air and Water Intrusion Around Windows and Doors
<br><b>DuPont™ Flashing Tape</b> is a self-adhered flashing tape with improved workability made from polypropylene film with a butyl rubber adhesive backing. Engineered to withstand the rigors of the job site. <b>DuPont™ Flashing Tape</b> helps create a durable seal against water intrusion around heads and jambs of rectangular windows and doors. <br><br> In addition to bulk water holdout, <b>DuPont™ Flashing Tape</b> can help control air leakage. Where windows and doors interface with sheathing or the DuPont™ Tyvek® Water-Resistive Barrier (WRB), DuPont™ Flashing Tape can help keep heated and cooled air in and exterior air out more effectively. <br><br> As part of a complete building envelope system, <b>DuPont™ Flashing Tape</b> can help reduce the risk of water damage, increase building comfort, and improve energy efficiency.
Resources
Product Information Sheets Installation Guides Brochure Warranty Videos
Features & Benefits
Application and Service Temperature
- Can be installed at external temperatures as low as 25 °F (-4° C).
- Withstands up to 120 days UV exposure.
High Performance Durability
- 100% butyl adhesive with excellent adhesion to most common building materials.
- Maintains a forgiving initial tack, allowing for repositioning.
- Heavy-duty siliconized paper release liner.
- Complies with AAMA 711, Voluntary Specification for Self Adhered Flashing Used for Installation of Exterior Wall Fenestration Products.
Multiple Product Offerings
- Features multiple size offerings for many applications.
- Split release liner on 6", 9", and 12" widths for easier product installation.
Specifications
Standard Sizes
Testing
<b>DuPont™ Flashing Tape™</b> exhibits physical properties as indicated below when tested as represented. Review all instructions and (Material) Safety Data Sheet ((M)SDS) before use. Please contact DuPont at 1-833-338-7668 when additional guidance is required for writing specifications that include this product.
(0.2 L/s • m2)
300 Pa (6.24 psf)
300 Pa (6.24 psf)
(< 60 ng/Pa.sec.m2)
Level 3 Thermal Exposure
(80°C/176°F for 7 days)
Note:- *Tested in a wall assembly containing a window. Adhesive system is based on 100% butyl elastomer with no asphalt/modified bitumen components
FAQ
Where can 12' DuPont Flashing Tape be utilized? 12' DuPont™ Flashing Tape can be used at inside/outside corners both underneath and on top of the Tyvek® WRB. Additionally, it can be used to protect the Tyvek® WRB behind ledger boards. Refer to the applicable DuPont Installation Guideline found at building.dupont.com for more information. Are flashing patches required behind cladding fasteners installed over DuPont Tyvek® Water-Resistive and Air Barriers (WRB)? In order to maintain air and water holdout for the assembly, the use of DuPont™ Flashing Tape, DuPont™ StraightFlash™, or recommended alternate patches behind cladding fasteners may be required and depends on the cladding type and project performance designations. Refer to the Alternate Fastening section in the applicable DuPont Installation Guideline found on the building.dupont.com for more information. Is DuPont™ Flashing Tape self-healing? DuPont™ Flashing Tape passes AAMA 711 Specification for Self-Adhering Flashing Used for Installation of Exterior Wall Fenestration Products Section 5.2 ' Water Penetration Resistance Around Fasteners'. 'Self-healing' flashing has the ability to recover to its original state after minor punctures/holes, while 'self-sealing' flashing can offer air and water infiltration resistance at the fastener location. DuPont™ Flashing Tape, and other DuPont Self-Adhered Flashing Products, are 'self-sealing' not 'self-healing'.
Additional Learning
Learn how choosing the right building envelope system can dramatically improve a home’s durability, moisture protection, and energy efficiency. Discover how DuPont™ Tyvek® water-resistive barriers and integrated building envelope solutions deliver proven, science‑driven performance that stands up to real‑world conditions.
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Learn the essential steps for installing DuPont™ Tyvek® as part of a high‑performance building envelope system. Our installation guides will show how proper installation helps maximize air and water protection for long‑lasting home durability.
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Vapor permeability plays a critical role in protecting walls from trapped moisture, mold and rot. Learn how DuPont™ Tyvek® water-resistive barriers provide the ideal balance of air and water resistance with high breathability to help walls dry effectively.
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The DuPont Building Envelope Specialist Network delivers hands‑on technical support, training and guidance to help teams build durable, energy‑efficient structures. Discover how DuPont pairs advanced product performance with unmatched field expertise to support your project every step of the way.
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DuPont offers a full range of product and system warranties designed to protect builders and property owners with reliable, long‑term coverage. Explore how DuPont™ Tyvek® warranties, along with expert project support, help ensure durable, high‑performing building envelope systems.
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Learn how DuPont is advancing sustainable construction with building envelope systems designed to improve energy efficiency, indoor environmental quality, and long‑term durability. Discover how DuPont™ Tyvek® water-resistive barriers help reduce air leakage, protect insulation performance, and support greener, longer‑lasting buildings.
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Builders can earn National Green Building Standard™ (NGBS) certification points by using DuPont™ Tyvek® and other DuPont sustainable building products approved by Home Innovation Research Labs. Learn how these high‑performance materials support greener construction while enhancing energy efficiency and moisture protection.
