ARBO ARBOshield Pro Class B W1 Breather Membrane


£219.24 inc. VAT
£182.70 ex. VAT

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  • Product ID: FCSHBW1
  • Suitable For: reducing the spread of fire
  • Area of use: INT
  • Volume: 1500mm x 50m
  • Container Type: roll
  • Type: membrane
  • Colour: black
  • Brand: ARBO
  • Manufactuer: ARBO
  • Box Size: 1
Data Sheets

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ARBO Façade Solutions (ARBO FS) is the new name for a pioneering initiative from ARBO, a trusted name in UK construction materials. The ARBOShield Pro Class B W1 Breather Membrane is a highly vapour-permeable wall membrane that offers superior moisture control. It also boasts a Class B-s1,d0 fire classification, ensuring enhanced fire safety for building applications.

 

Key Points:

  1. ARBO Façade Solutions (ARBO FS) represents a new initiative from ARBO, a leading UK construction brand.
  2. ARBOShield Pro Class B W1 Breather Membrane is a highly vapour-permeable wall membrane.
  3. The membrane provides effective moisture control for building applications.
  4. It features a Class B-s1,d0 fire classification for improved fire safety.

 

Storage Conditions: ARBOShield Pro Class B W1 Breather Membrane should be stored upright in a cool, dry environment.

 

 

 

For more information on ARBO, please visit their website here.

For more in our range of fire protection, please click here. For our full range of ARBO products, please click here.

 

 

ARBOShield Pro Class B W1 Breather Membrane is ideal for light steel frame (SFS) walling applications, making it particularly suitable for high-rise and high-risk buildings such as schools, hospitals, care homes, and residential blocks, where it helps reduce the spread of fire. It is also appropriate for modular off-site construction. The membrane’s composition limits the spread of fire across a façade, with minimal risk of smoke or burning droplets in the event of a fire. ARBOShield Pro Class B W1 Breather Membrane can be installed on any Class A rated substrate.

 

 

APPLICATION

Unroll the ARBOShield Pro Class B W1 Breather Membrane and secure it directly to the sheathing or insulation. The membrane should be fixed to the substrate using the appropriate fixings, with a maximum spacing of 600mm horizontally and 500mm vertically, using stainless steel staples. For SFS substrates, the membrane should be mechanically secured with fixings that include an EPDM type washer. All laps around perimeter edges should be sealed with ARBOShield Pro Class B High Tack adhesive tape. Vertically, the membrane must overlap by at least 150mm, with joints arranged in a staggered pattern. For horizontal laps, ensure a minimum 100mm overlap, starting from the bottom and working upwards, so the upper layer covers the lower one, protecting the substrate from water run-off.

Install fixing brackets for cladding or wall ties according to the manufacturer’s instructions, and take care at the interface between the membrane and fixing brackets. If cavity barriers are installed horizontally, the membrane should overlap the DPC tray to allow for water run-off. When ARBOShield Pro Class B W1 Breather Membrane is used as the external airtightness layer, overlaps and penetrations should be sealed using ARBOShield Pro Class B black membrane sealing tape.

The membrane is highly UV resistant, allowing for extended exposure in both summer and winter without compromising performance. Care should be taken during installation to avoid damage to the membrane. For small punctures less than 50mm, use ARBOShield Pro Class B black membrane sealing tape for repairs. For larger punctures exceeding 50mm, replace the damaged section with new membrane and seal the insertion with tape.

 

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Elementlength
up to
1,5 m
up to
2,5 m
up to
3,5 m
up to
4,5 m
up to
2,5 m
up to
3,5 m
up to
4,5 m
Type of window frame material Minimum witdth of joints
for a butled mounting b in mm
Minimum witdth of joints
for a inner mounting b in mm
Hard PVC (white) 10 15 20 25 10 10 15
Hard PVC and PMMA (dark)
(colour extruded)
15 20 25 30 10 15 20
Hard PUR integral foam 10 10 15 20 10 10 15
Wood-aluminium-window 10 10 15 20 10 10 15
Aluminium-plastic sandwich
frame (bright)
10 10 15 20 10 10 15
Aluminium-plastic sandwich
frame (dark)
10 15 20 25 10 10 15
Wooden window frame 10 10 10 10 10 10 10

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