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Firebreather Alu A2 W1

Non-combustible and reflective breather membrane.
It is used for facades and roofs, new builds and refurbishments.


Applications :

  • Roofs or facades
  • High rise buildings
  • Open claddings
  • Timber frame constructions
  • Public buildings
  • Off-site constructions
General documentation
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  • Non-combustible (A2-s1,d0 according to EN 13501-1)
  • Highly breathable
  • Summer comfort
  • Strong mechanical resistance
  • Easy to cut
  • Long lifetime

Technical datas

Water penetration W1
Reaction to fire A2-s1, d0
Water vapour permeance (Sd Value) 0,08 m
Resistance to vapour penetration 0,44 MN.s/g
Water vapour diffusion coefficient (μ) 235
Air tightness 0,093 m³/(hxm²x50 Pa)
UV resistance (without cladding) 9 months
UV resistance* (50% and 50 mm joints) Permanent (5 000 hours tested)
Temperature range -36°C to 90°C
Material Micro-perforated aluminum foil
Functional film
Glass fibre fabric
Integrated adhesive tape
Thickness 0,43 mm
Mass per unit area 430 g/m²
Width 1,20 m
Length 35 m / 50 m
Total m2 42 m² / 60 m²
Usable m2 38,5 m² / 55 m²
Weight 19 kg / 26 kg
Packaging 24 rolls/pallet (1008 m² / 1 440 m²)

* For any other project conditions, contact our technical department.


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