Tyvek Flashing Tape 4 inch x 75 ft

DuPont™ Tyvek® Flashing Tape – 4 in x 75 ft Self-Adhered Flashing Tape

DuPont™ Tyvek® Flashing Tape is a professional-grade self-adhered flashing tape designed to help seal windows, doors, and wall penetrations against air and water intrusion. It is commonly used as part of a complete weather-resistive barrier (WRB) system to protect vulnerable transitions in exterior wall assemblies.

In simple terms: This flashing tape seals around windows, doors, and openings to help keep wind and water out of the wall.

Built with a durable facer and a high-performance adhesive, Tyvek® Flashing Tape bonds to common construction materials and integrates cleanly with Tyvek® WRBs. The 4-inch width provides excellent coverage for window flanges, seams, and transition areas where reliable protection matters.

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Best For

• Contractors: Standard window and door flashing applications requiring dependable adhesion and system compatibility.
• Homeowners/DIY: Adding extra protection around openings to reduce leaks and drafts.

Key Benefits

• Air & water sealing: Helps block wind-driven rain and air infiltration at openings.
• Reliable adhesion: Designed to bond to common building materials when properly prepared.
• System compatibility: Integrates with Tyvek® WRBs and related flashing components.
• Convenient width: 4-inch tape provides solid coverage for window flanges and transitions.
• Cleaner detailing: Helps create a continuous, professional flashing detail without messy sealants.

Typical Uses

• Flashing around window and door flanges
• Sealing WRB seams and overlaps
• Detailing wall penetrations and transitions
• Integrating flashing with Tyvek® housewrap systems
• General exterior air and water sealing applications

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Specifications

Product Type	Self-adhered flashing tape
Size	4 in x 75 ft
Brand	DuPont™ Tyvek®
Primary Use	Window, door, and opening flashing
Compatibility	Designed for use with Tyvek® WRBs and common sheathing materials

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Installation Notes (Best Practice)

• Surface prep: Apply to clean, dry surfaces free of dust, oils, and debris.
• Press firmly: Use hand pressure or a roller to ensure full adhesive contact.
• Overlap properly: Overlap seams to maintain a continuous drainage and air barrier.
• Sequence matters: Install flashing in proper order with WRB to shed water outward.

Why It Matters

Windows, doors, and wall penetrations are some of the most common sources of leaks and air infiltration. Tyvek® Flashing Tape helps reinforce these areas by creating a durable seal that supports long-term wall performance and energy efficiency when used as part of a complete envelope system.

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Common Questions

Q: What is Tyvek® Flashing Tape used for?
A: It is used to flash and seal around windows, doors, seams, and wall penetrations to help block air and water intrusion.

Q: Can this be used with Tyvek® HomeWrap® or CommercialWrap®?
A: Yes — it is designed to integrate with Tyvek® WRBs as part of a complete weather-resistive barrier system.

Q: Is this the same as duct tape?
A: No — flashing tape is engineered for building envelope applications and long-term exposure, unlike general-purpose duct tape.