DuPont™ Tyvek® StructureGuard™


A durable, lightweight, breathable membrane that provides long-lasting protection against the elements. Single layer with enhanced water resistance and airtightness. Suitable for timber walls, metal frame systems, masonry and internal insulation upgrades.


  • Durable, lightweight and flexible.
  • Easy to install.
  • Wind-tight and water-resistant.
  • UV-resistant.
  • Increased energy efficiency.
  • Provides air and moisture management for commercial and residential buildings.
  • Long-term performance.
  • BBA-approved and CE-marked.

General information


High density polyethylene

Uniclass 2015

Pr_25_57_10_94 Vapour permeable sheetsPrimary


H20/10 Sheet cladding

H20/150 Sheet cladding

H20/155 Sheet cladding

H21/10 Vertical timber weatherboarding

H21/110 Vertical timber weatherboarding

H21/111 Horizontal timber weatherboarding

H21/115 Vertical timber weatherboarding

H21/116 Horizontal timber weatherboarding

H21/130 Breather membrane

H21/15 Horizontal timber weatherboarding

H21/20 Breather membrane

H30/350 Breather membrane

H31/280 Breather membrane

H92/120 Rainscreen cladding

P10/320 Breather membrane

P10/65 Breather membrane

Specification data - Vapour permeable sheets

Product Reference

DuPont™ Tyvek® StructureGuard™



Tyvek® Acrylic Tape

Tyvek® Butyl Tape

Tyvek® Double Sided Tape

Tyvek® FlexWrap EZ

Tyvek® FlexWrap NF

Standard product features


High density polyethylene.

Roll size (w x l):

1.4/ 2.7 x 100 m.

Mass per unit area:

58 g/m².

UV exposure:

Four months.


175 µm.

Water vapour transmission (Sd):

0.015 m.

Product Options


- Tyvek® Acrylic Tape:

Single-sided tape for sealing overlaps and making good around penetrations, pipes and windows. Recommended for all Tyvek membranes. Made of Tyvek and acrylic adhesive for durable and long-lasting bonding.

- Tyvek® Butyl Tape:

Double-sided butyl-based sealant, used to seal fixing penetrations in a Tyvek membrane, and form a moisture and airtight seal between a Tyvek membrane and most commonly used building materials. Tape is compatible with brickwork, blockwork, masonry, timber, metalwork and most plastic products.

- Tyvek® Double Sided Tape:

Double-sided acrylic tape for sealing laps in Tyvek membrane and bonding to smooth surfaces. Excellent adhesion properties under extreme conditions. Strong initial tack.

- Tyvek® FlexWrap EZ:

Narrow width, high performance and heavy duty adhesive tape with good flexibility. The pleated Tyvek® base layer allows the tape to be formed around small and complicated penetration details. Developed to provide sealing against water penetration and achieve efficient vapour and air-tightness.

- Tyvek® FlexWrap NF:

High performance flexible self-adhesive flashing tape. It provides excellent watertight adhesion to all Tyvek® breather membranes around non-straight penetrations such as dormers, door sills, chimney breasts, pipe penetrations and any custom shapes.

Third party certifications

  • 90/2548

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