Permavent ECO

Permavent ECO

Lightweight vapour permeable membrane


A cost-effective and adaptable membrane, Permavent ECO is suitable for multiple applications. An air-tight and vapour-open membrane, Permavent ECO can be installed in roofing and walling projects and is available in a variety of roll sizes.


Additional benefits:

  • Available with optional external tape systems, such as PERMATAC, to improve durability, installation speed and associated air-tightness benefits.
  • An economic design solution, tailored for budget-sensitive projects.


  • Lightweight breather membrane
  • 90 g/m2
  • Value membrane
  • Versatile
  • Fully BBA Certified
  • Tested to BS5534:2014 +A2:2018 wind loading
  • 3 layers membrane
  • UV stable for 3 months
  • For use on any types of roofing/walling applications
  • Available in  1m x 50m and 1.5m x 50m rolls


Weight, g/m290
Water tightness, classW1
Water vapour transmission (sd),m0.02
Maximum tensile force (MD), N/50mm260
Maximum tensile force (CD), N/50mm170
Elongation at max. tensile force (MD), %60
Elongation at max. tensile force (CD), %70
Resistance to tearing MD (nail shank), N100
Resistance to tearing CD (nail shank), N120

UK Wind Zones

Taped Lap1-5
Batten Lap1
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