173 Alfa Rufol UDB-A 165 (roofing underlay)
Suitable as temporary roofing up to 6 weeks (roof pitch > 16°). A-classified (ZVDH), driving rain proof, high vapour permeable roofing underlay for ventilated and non-ventilated pitched roofs. Details ...
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| Item-No. | Measures | Packacking Unit |
| 173 5015 (002) | 1,5 m x 50 m (75 m²) | Carton (2 rolls) |
| 173 5015 (020) | 1,5 m x 50 m (75 m²) | Pallet (20 rolls) |
| 173 5015 (060) | 1,5 m x 50 m (75 m²) | 3 Pallets (60 rolls) |
TU-Berlin certified roofing underlay for pitched roofs
Alfa Rufol UDB-A 165 is the A-classified (ZVDH), driving rain proof, high diffusion open roofing underlay (sub-membrane, sheating membrane) for ventilated and non-ventilated pitched roofs. It is to be applied between the thermal insulation and main battens.
Suitable for the direct installation ontop of the thermal insulation. Alfa Rufol UDB-A 165 avoids the penetration of humidity (e.g. due to driving snow) and penetration of dirt into the thermal insulation.
The 3-layer structure protects the functional membrane from damages and reduces the slipping risk for the processor.
Easy handling: Auxiliary lines allow exact overlaps.
Also available with two additional self-adhesive strips as Alfa Rufol UDB-A 165 SK!
Advantages:- meets the requirements of ZVDH and EnEV!
- high vapour permeable
- step-proof
- driving rain-proof
- UDB-A / USB-A according to ZVDH
- weight 165 g/m²
- temperature resistance -40 up to +100°C
- tear resistance (nail) >200 N/50mm
- fire behaviour class E (EN 13501-1)
- sd-value 0,02m
- watertightness W1 (EN 13895-1)
- CE-certified
- tested by TU Berlin
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