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ARBOShield Pro Class B W1 Breather Membrane.

Verified by manufacturer 2 days ago

Carlisle Construction Materials Limited

A high performance breather membrane with a Class B reaction to fire, W1 water penetration resistance, airtight, and highly moisture vapour permeable.

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Application

ARBOShield Pro Class B W1 Breather Membrane is suitable for light steel frame / SFS walling applications, in particular high-rise and high-risk buildings where fire performance is required.


Installed in a traditional manner ARBOShield Pro Class B W1 Breather Membrane and fix directly to the sheathing board. ARBOShield Pro Class A W1 Breather Membrane should be secured to the substrate using appropriate fixings, usually stainless steel staples. Fixings should be no more than 600mm across the horizontal plane and 500mm vertically. All laps around windows or structural openings should be sealed using ARBOShield Pro Class B overlap tape.


ARBOShield Pro Class B W1 Breather Membrane should be installed with a least a 100mm lap horizontally starting at the bottom of the sheathing board, working upwards to ensure the upper layer overlaps the lower layer, therefore protecting the substrate from water runoff.


Any fixing brackets for the facade or cladding should be installed as per manufacturers’ instructions and care should be taken around the interface between the breather membrane and fixing bracket. Any tears or cuts in the membrane should be repaired with ARBOShield Pro Class B overlap tape to maintain a waterproof and airtight installation.

Description

ARBOShield Pro Class B W1 Breather Membrane is suitable for use in all light steel frame / SFS type walling applications, especially high-rise and high-risk buildings such as schools, hospitals, care homes and residential blocks, where fire performance is required.


ARBOShield Pro Class B W1 Breather Membrane can also be used for timber frame or modular off-site construction. The composition of ARBOShield Pro Class B W1 Breather Membrane helps limit the spread of fire across a façade with limited risk of smoke or burning droplets in a fire situation.


Features and benefits:

  • W1 water penetration resistance.
  • Class B-s1,d0 reaction to fire*
  • Limits the risk of smoke or burning droplets.
  • 5,000 hours UV resistance passed
  • Airtight but highly moisture vapour permeable
  • BS EN 13859-2
  • Pure black surface, no logos or text - ideal for an aesthetically pleasing open rainscreen type application.


*ARBOShield Pro Class B W1 breather membrane must be applied to a Class A substrate material to maintain the Class B reaction to fire classification.

General information

Color

Grey

Black

Finish

Micro-textured

Material

Other

Shape

Rectangle

Length

50000 mm

Width

1500 mm

Warranty description

Lifetime

Uniclass

Pr_25_57_10_94 Vapour-permeable sheetsPrimary

CAWS

H22/20 Breather membrane

H22/130 Breather membrane

H92/785 Breather membrane

H30/50 Breather membrane

H30/350 Breather membrane

H31/55 Breather membrane

H31/280 Breather membrane

H21/20 Breather membrane

H21/130 Breather membrane

P10/320 Breather membrane

P10/65 Breather membrane

Specification data - Vapour-permeable sheets

Standard

To BS EN 13859-1.

Performance criteria

-

Water vapour properties

To EN 12572, 0.07 m.

Guidance for specification option:

Sd value.

Fire performance

To BS EN 13501, Class B2-s1, d0.

Guidance for specification option:

Must be installed onto a Class A rated substrate to maintain its Class B fire performance.

Tensile properties

To BS EN 12311-1, MD 200 N/ 50 mm. CD 140 N/ 50 mm.

Guidance for specification option:

Nail tear to EN 12310-1, MD 120 N. CD 140 N.

Class (minimum)

W1.

Weight (minimum)

115 g/m².

Sustainability data

Contains Red List materials

No

Country of product manufacture

United Kingdom

Material

Other

Recyclability

Fully recyclable

Literature

ARBOShield Pro Class B W1 Breather Membrane Datasheet

ARBOShield Pro Class B W1 Breather Membrane Datasheet