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Tyvek® FireCurb®

Verified by manufacturer 5 months ago

DuPont™ Tyvek® Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

Fire rated wall breather membrane. Formerly called Tyvek® FireCurb® Housewrap.

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  • 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 over 18 m in height.


A breather membrane with enhanced fire performance for wall elements of buildings. Based on patented technology, the product provides Euroclass B (EN 13501-1) classification.

Features and benefits:

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

General information






High density polyethylene (HDPE)




50 mm


1.5 mm

Warranty description

15 year


Pr_25_57_10_94 Vapour-permeable sheetsPrimary


H20/10 Sheet cladding

H20/155 Sheet cladding (attached to timber battens)

H20/150 Sheet cladding (attached to metal support systems)

H21/10 Vertical timber weatherboarding

H21/15 Horizontal timber weatherboarding

H21/20 Breather membrane

H21/130 Breather membrane

H21/115 Vertical timber weatherboarding

H21/116 Horizontal timber weatherboarding

H21/111 Horizontal timber weatherboarding

H21/110 Vertical timber weatherboarding

H30/10 Fibre cement

H30/110 Fibre cement

H92/120 Rainscreen cladding

M30/265 Building paper

P10/65 Breather membrane

P10/320 Breather membrane

Specification data - Vapour-permeable sheets


To BS EN 13859-2.

Performance characteristics

Fire resistant.

Class (minimum)



High Density Poly Ethylene (HDPE).



Third-party certification

British Board of Agrément (BBA) Certificate.

Weight (minimum)

68 g/m².

Thickness (minimum)

0.175 mm.


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.

Reaction to fire (EN 13501-1)

B-s1, d0.

Temperature resistance

-40°C to +100°C.

Water vapour transmission

0.014 m.

Sustainability data

Contains Red List materials


Country of material origin


Country of product manufacture


Embodied carbon

A1-A3 (production stage) as defined in BS EN 15804

0.36 kg CO₂ eq/kg

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Platform Compatible Version




Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate



Tyvek Technical Wall Manual 2022

Tyvek Technical Wall Manual 2022

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