Permeable premium roofing underlay with 220 g/m² and adhesive strip

174 Alfa Rufol UDB-A 220 SK

174 Alfa Rufol UDB-A 220 SK is extremely robust and highly tear resistant. Moreover, this pitched roof membrane is very durable and resistant to oil and surfactants.

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Item-No. Measures Packacking Unit Price Quantity
174 5015 SK (002) 1,5 m x 50 m (75 m²) Carton (2 pcs.) **
174 5015 SK (015) 1,5 m x 50 m (75 m²) 5 Cartons (15 pcs.) **
174 5015 SK (020) 1,5 m x 50 m (75 m²) Pallet (20 pcs.) **

Product description

174 Alfa Rufol UDB-A 220 SK is a premium quality product. This vapour permeable roofing underlay with self-adhesive strip is energy-efficient and conforms to DIN EN 13859-1. The pitched roof membrane consists of a PES fleece and a durable polyurethane coating. The fleece makes this membrane very robust and provides high tear resistance and elasticity. Thanks to the high quality PU coating, Alfa Rufol UDB-A 220 SK is long-lived and resistant against oil and surfactants.


  • Roofing membrane and underlay
  • Temporary roofing / rain proof sub-membrane
  • Rear-ventilated and non-ventilated constructions
  • Renovations and new buildings


  • Corresponds to the requirements of ZVDH and EnEV
  • Outdoor exposure: max. 3 months
  • UDB-A / USB-A according to ZVDH
  • Water vapour permeable premium roofing membrane
  • With self-adhesive strip
  • Fleece reinforcement and polyurethane coating
  • Suitable as temporary roofing
  • Extremely high abrasion and scratch resistance
  • Material will prevent you from falling through if you accidentally step onto the mounted membrane
  • Air-, water- and driving rain-proof
  • Easy installation
  • Resistant to oil and surfactants

Proven Quality

Alfa Quality-Seal at fair prices