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Summary
Class B (B-s1,d0) flame-retardant W1 breather membrane for use in both walls and roofs. This weathertight fire rated membrane is suited to high-rise tall buildings 18m+ in England & 11m+ in Scotland
Class B (B-s1,d0) flame-retardant W1 breather membrane for use in both walls and roofs. This weathertight fire rated membrane is suited to high-rise tall buildings 18m+ in England & 11m+ in Scotland
Application
ITP FlameOUT® Breathe Class B is suitable for wall and pitched roof installations in safety critical structures over 18 m in England and 11 m in Scotland.
Storage and handling:
- Store membrane rolls horizontally in a cool, dry sheltered store.
- Handle the material with care and ensure that the membrane is not creased or folded.
Installation:
- Secure to the supporting structure using stainless steel staples.
- It is recommended that the membrane is installed vertically.
- For corners, loosely wrap the membrane around the corner and seal the recommended overlap with ITP FlameOUT® D/S Jointing Tape or fix with staples.
Bonding to surfaces:
- Make sure that surfaces are clean and free from dust and grease.
- Stainless steel staples can be used to fix the membrane to timber studs.
- ITP FlameOUT® D/S Jointing Tape can be used to fix to wood, foams, metal, and plastics. Test any surface prior to installation. It is not advisable to attach to insulation due to the unstable surface.
- ITP FlameOUT® Breathe is Class B-s1,d0 when free hanging or directly installed on a supporting structure with a flame-retardant classification of A1 or A2.
- Protect the membrane from UV exposure.
- Cover and finish the installation within a maximum of 3 months.
Tape:
- ITP FlameOUT® D/S Jointing Tape should be used to seal 100 mm overlaps.
- A single continuous row of the double-sided ITP FlameOUT® D/S Jointing Tape should be laid to create a waterproof seal within the 100 mm overlap.
- If the membrane is installed vertically then overlaps should be 150 mm.
- Use a hand-held roller to aid adhesion.
Repairs:
- Small punctures in the membrane after installation can be repaired with a patch of ITP FlameOUT® Breathe Class B large enough to extend approx 150 mm beyond the penetration. Adhere using ITP FlameOUT® D/S Jointing Tape.
See installation instructions for full details.
ITP FlameOUT® Breathe Class B is suitable for wall and pitched roof installations in safety critical structures over 18 m in England and 11 m in Scotland.
Storage and handling:
- Store membrane rolls horizontally in a cool, dry sheltered store.
- Handle the material with care and ensure that the membrane is not creased or folded.
Installation:
- Secure to the supporting structure using stainless steel staples.
- It is recommended that the membrane is installed vertically.
- For corners, loosely wrap the membrane around the corner and seal the recommended overlap with ITP FlameOUT® D/S Jointing Tape or fix with staples.
Bonding to surfaces:
- Make sure that surfaces are clean and free from dust and grease.
- Stainless steel staples can be used to fix the membrane to timber studs.
- ITP FlameOUT® D/S Jointing Tape can be used to fix to wood, foams, metal, and plastics. Test any surface prior to installation. It is not advisable to attach to insulation due to the unstable surface.
- ITP FlameOUT® Breathe is Class B-s1,d0 when free hanging or directly installed on a supporting structure with a flame-retardant classification of A1 or A2.
- Protect the membrane from UV exposure.
- Cover and finish the installation within a maximum of 3 months.
Tape:
- ITP FlameOUT® D/S Jointing Tape should be used to seal 100 mm overlaps.
- A single continuous row of the double-sided ITP FlameOUT® D/S Jointing Tape should be laid to create a waterproof seal within the 100 mm overlap.
- If the membrane is installed vertically then overlaps should be 150 mm.
- Use a hand-held roller to aid adhesion.
Repairs:
- Small punctures in the membrane after installation can be repaired with a patch of ITP FlameOUT® Breathe Class B large enough to extend approx 150 mm beyond the penetration. Adhere using ITP FlameOUT® D/S Jointing Tape.
See installation instructions for full details.
Description
ITP FlameOUT® Breathe is a Class B (B-s1,d0) W1 flame-retardant breather membrane which is self extinguishing when ignited, ensuring minimal contribution to fire spread. Independently tested to EN 13501-1, ITP FlameOUT® Breathe Class B is fully compliant for use on safety critical and high-rise builds over 18 m in England and 11 m in Scotland. This weathertight membrane offers W1 water tightness to give maximum protection against rain water ingress and makes this product suitable for both pitched roofs and walls.
Can be used in conjunction with ITP FlameOUT® Block Standard B-s1,d0 or ITP FlameOUT® Block Premium B-s1,d0 Class B vapour barriers which are installed on the warm side of the building envelope.
Features and benefits:
- Independently tested to EN 13501-1.
- Euroclass B-s1,d0 Class B fire rated membrane.
- Self-extinguishing when ignited, ensuring minimal contribution to fire spread.
- Little or no smoke generation and would not produce burning droplets.
- W1 water tightness rating.
- Excellent breathability.
- Compliant for use in high-rise and high-risk buildings.
- Compliant to Approved Document B.
- CE approval.
- 15 year warranty.
Accessories:
ITP FlameOUT D/S jointing tape:
- Size: 60 mm x 25 m.
- Colour: clear.
- Flame retardancy: FMVSS 302 pass.
- Temp range: -20°C to +70°C.
- Installation range: +10°C to +35°C.
ITP FlameOUT® Breathe is a Class B (B-s1,d0) W1 flame-retardant breather membrane which is self extinguishing when ignited, ensuring minimal contribution to fire spread. Independently tested to EN 13501-1, ITP FlameOUT® Breathe Class B is fully compliant for use on safety critical and high-rise builds over 18 m in England and 11 m in Scotland. This weathertight membrane offers W1 water tightness to give maximum protection against rain water ingress and makes this product suitable for both pitched roofs and walls.
Can be used in conjunction with ITP FlameOUT® Block Standard B-s1,d0 or ITP FlameOUT® Block Premium B-s1,d0 Class B vapour barriers which are installed on the warm side of the building envelope.
Features and benefits:
- Independently tested to EN 13501-1.
- Euroclass B-s1,d0 Class B fire rated membrane.
- Self-extinguishing when ignited, ensuring minimal contribution to fire spread.
- Little or no smoke generation and would not produce burning droplets.
- W1 water tightness rating.
- Excellent breathability.
- Compliant for use in high-rise and high-risk buildings.
- Compliant to Approved Document B.
- CE approval.
- 15 year warranty.
Accessories:
ITP FlameOUT D/S jointing tape:
- Size: 60 mm x 25 m.
- Colour: clear.
- Flame retardancy: FMVSS 302 pass.
- Temp range: -20°C to +70°C.
- Installation range: +10°C to +35°C.
Product certifications
- CE Marking FlameOUT® Breathe - CE Marking
- CE Marking FlameOUT® Breathe - CE Marking
Color
Grey
Grey
Finish
Textured
Textured
Material
Polypropylene
Polypropylene
Shape
Rectangle
Rectangle
Length
50000 mm
50000 mm
Width
1500 mm, 3000 mm
1500 mm, 3000 mm
Warranty description
15 year
15 year
Specification
Classification data
Standard
To BS EN 13859-1., To BS EN 13859-2.
To BS EN 13859-1., To BS EN 13859-2.
Performance criteria
-
-
Water vapour properties
Water vapour transmission determined in accordance with EN ISO 12572, 0.02 m.
Water vapour transmission determined in accordance with EN ISO 12572, 0.02 m.
Fire performance
Reaction to fire: To BS EN 13501-1, Class B or better.
Reaction to fire: To BS EN 13501-1, Class B or better.
Tensile properties
Tensile strength to BS EN 12311-1; 170 N/ 50 mm (MD); 140 N/ 50 mm (CD).
Tensile strength to BS EN 12311-1; 170 N/ 50 mm (MD); 140 N/ 50 mm (CD).
Class (minimum)
W1.
W1.
Form
Non-woven.
Non-woven.
Weight (minimum)
90 g/m².
90 g/m².
Additional properties
Tear resistance
80 N/50 mm (MD); 90 N/50 mm (CD).
80 N/50 mm (MD); 90 N/50 mm (CD).
Roll size
1.5 x 50 m.
3.0 x 50 m.
Roll weight
7.2 kg.
14.0 kg.
Colour
Dark grey.
Dark grey.
Accessories
Not required., ITP FlameOUT D/S jointing tape.
Not required., ITP FlameOUT D/S jointing tape.
Sustainability data
Contains Red List materials
No
No
Country of material origin
Europe
Europe
Country of product manufacture
Europe
Europe
Material
Polypropylene
Polypropylene
Carbon dioxide equivalent
Normalized unit
(kg CO₂ eq/kg) A1–A3 ('Production stage') :
-
A1–A3 ('Production stage') :
-
Declared unit
Self-declared
A1–A3 ('Production stage') :
1.6-2.6
Self-declared
A1–A3 ('Production stage') :
1.6-2.6
Recyclability
Suitable for waste to energy
Suitable for waste to energy
Recycled content
15 %
15 %
Expected Life
Ten year
Ten year