Medium-weight roofing underlay with self-sealing perforations and waterproof adhesive strips

Advantages

  • Maximum protection for the roof structure: excellent hail impact resistance as per ETA-23/0532 and VKF (HR 5 class)
  • Efficient installation: serves as a roofing underlay with waterproof seams and self-sealing perforations for roof pitches ≥14° (3:12) without the need for additional sealing measures, as per ETA-23/0532
  • Reliable rainproof roofs: serves as a sub-roof underlay for roof pitches ≥10° (2.1:12) with TESCON NAIDECK as an additional sealing measure over rigid subsurfaces, as per ETA-23/0532
  • Quick waterproof adhesion: with sealing lip at the 'connect’ self-adhesive strips on the long edges of the membrane
  • Flexible planning of construction schedules: at least 3 months of outdoor exposure
  • Permanent protection: high resistance to ageing and heat of the functional film
  • Provides protection during the construction period: suitable as a temporary covering

Areas of application

For use as a diffusion-open roofing underlay over roof sheathing, MDF and wood-fibre underlay panels, and over all thermal insulation materials, including blown-in insulation materials.

Technical specs

  Material
Functional film, one side Monolithic TPU
Backing fleece Polyester fleece
Self-adhesive strips Water-resistant SOLID adhesive
Property Value Regulation
Colour Grey-blue
Surface weight 230 g/m² ; 0.75 oz/ft² EN 1849-2
Thickness 0.7 mm ; 28 mils EN 1849-2
Water vapour resistance factor µ 230 EN ISO 12572
sd value 0.16 m EN ISO 12572
g value 0.8 MN·s/g
Vapour permeance 20.5 perms ASTM E96-A
Fire class E EN 13501-1
Outdoor exposure Cen./Nth. Europe & Canada/Nth. US: 4 months ; RoW: 3 months
Hail resistance ETA-23/0532 EN 13583
Hail impact resistance Class HR 5 VKF / AEAI
Watertightness of perforation points ETA-23/0532 EAD 030218-01-0402
Watertight joints with ‘connect’ adhesive strips or TESCON VANA tape W1 EN 13859-1
Sarking/roofing underlay membrane (Germany) USB / UDB ZVDH-Produktdatenblatt 2024
Suitable as temporary roof covering (Germany) Yes ZVDH
Water column > 4 500 mm ; 14' 9" EN ISO 811
Watertightness, non-aged/aged* W1 / W1 EN 13859-1
Tensile strength MD/CD 335 N/5 cm / 355 N/5 cm ; 38 lb/in / 41 lb/in EN 13859-1 (A)
Tensile strength MD/CD, aged* 325 N/5 cm / 335 N/5 cm ; 37 lb/in / 38 lb/in EN 13859-1 (A)
Elongation MD/CD 36 % / 55 % EN 13859-1 (A)
Elongation MD/CD, aged* 36 % / 55 % EN 13859-1 (A)
Nail tear resistance MD/CD 200 N / 200 N ; 45 lbf / 45 lbf EN 13859-1 (B)
*) Durability after artificial ageing Passed EN 1297 / EN 1296
Flexibility at low temperature -40 °C ; -40 °F EN 1109
Temperature resistance Permanent -40 °C to 100 °C ; -40 °F to 212 °F EN 1109, EN 1296, EN 1297
Thermal conductivity 0.04 W/(m·K) ; 0.3 BTU·in/(h·ft²·°F)
Emissivity 0.85 EN 15976
CE labelling Yes ETA-23/0532