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Tyvek® Firecurb Housewrap

A breather membrane with enhanced fire performance for wall elements of buildings. Based on patented technology, providing a Euroclass B (EN 13501-1) classification. Typically installed onto the external side of the insulation material or integrated in the wall system. It can be used as a solution for ventilated façades and timber frame construction. Particularly suitable for buildings of over 18 m in height.


  • Self-extinguishing when ignited.
  • Limits propagation of flames.
  • Halogen-free flame retardant coating considerably limits the formation of droplets and reduces smoke.
  • Includes all previous Tyvek characteristics for energy efficient and condensation free building.
  • Low VOC emissions (volatile organic compound).
  • Long term investment protection.
  • Greater safety during and after installation.

General information

1.5 x 50 m roll

Uniclass 2015
Pr_25_57_10_94 Vapour permeable sheetsPrimary
Specification data - Vapour permeable sheets
Product Reference

Tyvek Firecurb Housewrap



Tyvek® FlexWrap NF

Tyvek Acrylic Tape

Tyvek® Butyl Tape

Tyvek® Double Sided Tape

Standard product features


1.5 x 50 m roll.


5.5 kg per roll.


Flash-spun-bond HDPE with flame retardant coating.

Reaction to fire (EN 13501-1):

B-s1, d0.

Temperature resistance:


Water vapour transmission (Sd):

0.014 m.

Mass per unit area:

68 g/m².

Functional layer thickness:

175 μm.

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. Roll size: 75 mm x 25 m.

- 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. Roll size: 50 mm x 25 m.

- 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. Roll sizes: 20 mm x 30 m, 50 mm x 30 m.

- Tyvek® FlexWrap NF:

A stretchable and flexible tape made up of three components: a crimped DuPont™ Tyvek® top sheet providing a water tight layer, the butyl mass as an adhesion layer and a paper release liner. 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. Roll size: 2280 mm x 22.9 m.

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