Tyvek Seam Tape 3 inch x 55 yards

DuPont™ Tyvek® Seam Tape – 3 in x 55 yd WRB Seam Sealing Tape

DuPont™ Tyvek® Seam Tape is a professional-grade WRB seam sealing tape designed to seal overlaps and joints in Tyvek® weather-resistive barriers. It helps maintain a continuous air and water-resistive layer by closing gaps at housewrap seams where air leakage and moisture intrusion commonly occur.

In simple terms: This wider seam tape seals the joints where Tyvek® housewrap sheets overlap, helping keep wind and water out of the wall.

The 3-inch width provides added coverage compared to standard seam tape, making it a preferred choice for projects that require extra overlap tolerance, rougher substrates, or added margin for error during installation. It is engineered specifically for use with Tyvek® WRBs and performs best as part of a complete building envelope system.

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Best For

• Contractors: Projects requiring wider seam coverage, added durability, or extra sealing confidence.
• Homeowners/DIY: Improving wrap seam protection with a more forgiving, wider tape.

Key Benefits

• Wider seam coverage: 3-inch width helps bridge uneven overlaps and minor installation imperfections.
• Seals WRB seams: Supports continuity of the air and water-resistive barrier.
• Designed for Tyvek® wraps: Engineered to work with Tyvek® HomeWrap®, CommercialWrap®, and related products.
• Reliable adhesion: Bonds well to properly prepared Tyvek® wrap surfaces.
• Professional finish: Helps create clean, durable seam details on exterior walls.
• Energy efficiency support: Helps reduce air leakage through unsealed wrap joints.

Typical Uses

• Sealing horizontal and vertical housewrap seams
• Detailing WRB overlaps on large wall areas
• Reinforcing wrap continuity at transitions
• Supporting air barrier detailing on exterior walls
• Weatherproofing wrap installations prior to cladding

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Specifications

Product Type	WRB seam sealing tape
Size	3 in x 55 yd (165 ft)
Brand	DuPont™ Tyvek®
Primary Use	Sealing Tyvek® WRB seams and overlaps
Compatibility	Designed for use with Tyvek® housewrap products

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Installation Notes (Best Practice)

• Apply to clean, dry wrap: Ensure the housewrap surface is free of dust, moisture, and wrinkles.
• Center over seams: Position tape evenly across overlapping wrap joints.
• Press firmly: Use hand pressure or a roller to activate full adhesive contact.
• Do not use as flashing: Use flashing tape for windows, doors, and penetrations.

Why It Matters

Wider seam coverage can make a real difference on large wall areas or fast-paced jobsites. Tyvek® Seam Tape (3") provides added sealing confidence at WRB seams, helping maintain air barrier continuity and support long-term wall performance and energy efficiency.

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Common Questions

Q: Why choose 3-inch seam tape instead of 2-inch?
A: The 3-inch width provides more coverage over seams, making it ideal for uneven overlaps, larger wall areas, or situations where extra sealing margin is preferred.

Q: Can this replace flashing tape?
A: No — seam tape is for sealing housewrap seams only. Use flashing tape for windows, doors, and penetrations.

Q: Is this suitable for both residential and commercial projects?
A: Yes — it’s commonly used in residential, multi-family, and light commercial construction.