Omega - Model UDOS 330 -Topgrip Roof Underlay

Field of application

• for vented pitched roofs
• minimum roof pitch 1.5° (seam-welding)
• minimum roof pitch 5° (SK DUO)
• for installation directly on the thermal insulation / wood sheathing

Is a vapour-permeable, weldable roofing membrane for laying directly on thermal insulation or wooden sheathing. The membrane is suitable for underroofs with increased rainproofing in accordance with ÖNORM B 4119 and corresponds with the classification UDB-A in compliance with the ZVDH (national Association of Roofers) standard. Can be used for extreme demands in accordance with the underroof category pursuant to SIA 232/1. Moisture in the building’s interior can escape to the outside in the form of water vapour through the underroof membrane, at the same time providing tightness against wind-driven rain. Complies with the Swiss ‘Gebäudehülle Schweiz’ (building envelope) seal of approval for underroofs.

• Material composition: PES fleece with TPU layer on both sides, including fleece coating on top
• sd-value: 0.25 m
• Thickness: ≥ 1 mm
• Temperature resistance: -40–100 °C
• Weight: 420 (±30) g/m²
• Colour: Light grey
• UV-resistance: 12 months
• Resistance to water flow: W1
• Resistance to water flow: EN 1928
• Elongation - lengthwise: 50 % (± 40)
• Elongation - crosswise: 60 % (± 40)
• Elongation: EN 12311-1
• Tensile strength - lengthwise: 420 (± 80) N/50 mm
• Tensile strength - crosswise: 430 (± 80) N/50 mm
• Tensile strength: EN 12311 - 1
• Tear propagation resistance - lengthwise: 280 (± 80) N
• Tear propagation resistance - crosswise: 320 (± 80) N
• Tear propagation resistance: EN 12310-1
• Storage: Cool and dry
• Fire performance: E
• Fire performance: EN 13501-1 / EN 11925-0

• Article number: 2TOP
• Type: SK DUO
• Roll width: 1.5 m
• Roll length: 30 m
• Rolls / Pallet: 20 rolls
• Total area: 900 m²