Aspira Vapour breathing membrane

The latest ASPIRA 3-ply vapour breathing membranes provide breathability for the roof slope, a condition crucial for the health of the entire building.

The vapour membrane lets the structure “breathe out” the moisture accumulated within the thermal insulation system, while preventing the ingress of water from the outside. The ASPIRA vapour breathing membranes are waterproof and highly permeable to water vapour. The three plies of polypropylene also ensure high tensile and yield strength.

The membranes are available in three versions:


  • Pre-covering membrane 
  • An economical solution for any type of roof


  • Excellent vapour permeability 
  • High strength


  • Roofing screen class
  • High performance under extreme conditions 

All membranes of the Aspira series meet the pro-ecological requirements of modern buildings. In each version and type, they are 100% recyclable, suitable for reprocessing, and in the production cycle they do not generate landfill waste.

product main image product main image (small)


Masa (g/m2) 135 150 170
Background colour light gray red green
Adhesive strips - 2 2
Composition (number of layers) 3 3 3
Breakaway strength [N/5 cm], lengthwise 280 300 320
Breakaway strength [N/5 cm], crosswise 170 180 200
Elongation at break [%], lengthwise 70 60 70
Elongation at break [%], crosswise 90 80 90
SD: diffusion equivalent layer of air [m] 0,02 0,02 0,02
Application temperature range [°C]  -40°C to +80°C  -40°C to +80°C  -40°C to +80°C
Resistance to permeation Class W1 Class W1 Class W1
UV stability 3 months* 3 months* 3 months*
Standard size in reel [m] 1,50x50 1,50x50 1,50x50
Fire reaction class E E E

 (*) Refers to exposure with average annual UVB radiation intensity. In the summer, with maximum intensity of solar radiation, in accordance with the building practice, avoid exposure of any roofing membranes for more than 3 weeks.

Aspira Gallery


General catalogues & price lists

Steel Sheet Roofing Catalogue
Steel Sheet Roofing Catalogue (9.7 MB)
Balex Metal Product Catalogue
Balex Metal Product Catalogue (31.46 MB)

General Terms & Conditions of Sales

General Sales Conditions
General Sales Conditions (141.31 KB)