ARBOShield Pro Class B W1 Breather Membrane.
Verified by manufacturer 6 months ago
A high performance breather membrane with a Class B reaction to fire, W1 water penetration resistance, airtight, and highly moisture vapour permeable.
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 | |
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