Base Sheet NB 120

Base Sheet NB 120 SBS modified fiberglass venting base sheet

Base Sheet NB 120 is a 120 mil (3.1 mm) thick SBS modified fiberglass venting base sheet for use within Sarnafil® hybrid roofing systems.

  • Fiberglass reinforced for strength and dimensional stability
  • Sanded surface accepts hot asphalt for Sika’s ply sheet attachment
  • Granular underside with an embossed venting pattern to allow vapor to move under the base sheet when mechanically fastened to approved substrates