OMEGA UDOs 330 – roofing underlay, weldable
Vapour-permeable, weldable membrane for sub-roofs with increased rain-tightness to ÖNORM B 4119. Also supplied pre-welded to size.
- Up to 5 months of outdoor exposure
- Pitch from 1.5° with welded joints, from 5° with SK DUO adhesive strips
- Textured surface
- Directly on timber boarding or thermal insulation
Technical data
| Composition | polyester non-woven fabric with a TPU layer on both sides |
| Sd value | 0.18 (± 0.04) m |
| Weight | 330 (+ 5%) g/m² |
| Thickness | ≥ 0.75 mm |
| Tensile strength, lengthwise / crosswise (EN 12311-1) | 300 (± 30) N/50 mm / 350 (± 30) N/50 mm |
| Tear resistance, lengthwise / crosswise (EN 12310-1) | 260 (± 30) N / 240 (± 30) N |
| Watertightness (EN 1928) | W1 |
| Temperature resistance | −40 … +100 °C |
| Outdoor exposure | 5 months |
| As temporary covering | 16 weeks |
| Reaction to fire class | E |
| Colour | grey |
Manufacturer’s data sheet (PDF, in German) · The product on isocell.com
How much do you need?
Send us the size and the quantity — we reply with a quote, availability and delivery time.
Sizes and packaging
| Item no. | Type | Width | Length | Rolls/pallet | m²/pallet | Price incl. VAT | Per m² / m incl. VAT |
|---|---|---|---|---|---|---|---|
| 2UDOSK | SK DUO | 1.5 m | 30 m | 40 rolls | 1800 m² | €449.28 | €9.98 / m² |
| 2OMSTG | standard | 1.5 m | 30 m | 40 rolls | 1800 m² | €426.06 | €9.47 / m² |
| 2OMST3G | standard | 3 m | 30 m | 24 rolls | 2160 m² | €862.92 | €9.59 / m² |
Data: ISOCELL GmbH & Co KG. End-customer prices including VAT. Availability and delivery time of the individual sizes are confirmed on enquiry.
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from €5.30 / m² incl. VAT →A quote for OMEGA UDOs 330
Send us the product, the size and the quantity — we reply with a quote, availability and lead time.

