DUO longlife ND extra roofing membrane


Product description 

  • 2-layer, vapour-permeable sub-roof and sheathing membrane with TPU coating and a PES non-woven fabric with embossed grid structure 
  • Can be used in ventilated and unventilated roof assemblies as a trussing, sub-roof or sheathing membrane 
  • Can be used in accordance with the Frauenhofer Institute certification as a seam and perforation-protected underlay membrane, trussing sheet (Class 3) at a roof pitch of 14° or more without perforation protection 
  • Can be used as a rain-proof sub-roof (class 2) with perforation protection 
  • Extremely resistant to chemicals 
  • Resistant to chemical impregnation, chain saw oil, wood rot and mould 
  • Suitable as temporary roofing for no more than 12 weeks 
  • Lasting thermal stability from -40°C to +110°C 
  • Two vertically aligned self-adhesive strips ensure economical and lasting adhesion of longitudinal seams 
Dachbahn DUO longlife ND extra

Technical data 

UV resistance:16 weeks
Outdoor exposure period:12 weeks
Elongation (following artificial ageing), EN 12311-1:Longitudinal: 45% Transverse: 75%
Tear resistance (nail shank), EN 12310-1:Longitudinal: 300 N Transverse: 300 N
Resistance to air penetration:-
Fire behaviour EN 13501-1 EN 11925-2:Class E
Resistance to water penetration (following artificial ageing) EN 1928:W1
Central Organization of the German Roofing Trade (ZVDH) classification for sub-roof membranes:UDB-A
Central Organization of the German Roofing Trade (ZVDH) classification for underlays:USB-A
Length:50 m
Width:1.5 m
m² per roll:75 m²
Rolls per pallet:15 rolls
Weight:270 g/m²
Water column, EN 20811:> 3000 mm
sd value EN 12572:0.15 m
Tensile strength, EN 12311-1Longitudinal: 500N/50mm Transverse: 500 N/50 mm
Tensile strength (following artificial ageing), EN 12311-1Longitudinal: 400 N/50mm Transverse: 400 N/50 mm 
Elongation EN 12311-1Longitudinal: 50% Transverse: 80% 


CREATON roof membrane applications 

Trussing sheet:Yes 
Rain-proof sub-roof:Yes
Watertight sub-roof:No
Facade membrane:No



To ensure the lasting function of CREATON DUO longlife ND extra, we recommend only using the matching CREATON accessory:  

  • CREATON NKS seam adhesive strips 
  • CREATON SKL special adhesive 
  • CREATON NDM nail sealant 
  • CREATON UAB sub-roof connection tape 
  • CREATON sub-roof connection adapter