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