Novia Methane Pro 390 Gas Barrier & DPM

Product Overview

Novia® Methane Pro 390 is a multi-layer virgin polythene laminate with a reinforced aluminium foil core, suitable for use as a loose laid Methane, Carbon Dioxide & Radon gas barrier and high-specification damp proof membrane (DPM). Novia® Methane Pro 390 has a weight of 390gsm and is ≥0.4mm in thickness. The membrane complies with current UK Building Regulations for Methane protection, including BS 8485 groundwork applications and is suitable for both taped or welded installations. Novia® Methane Pro 390 meets EN 13967 as a DPM and is UKCA approved. The membrane is blue on one side, silver on the reverse, with no text or images. 

Novia® Methane Pro 390 is BS 8485 compliant for Methane gas applications. Methane transmission rates have been tested to BS ISO 15105-1 and are significantly below limits required under BS 8485, at ≤0.1 ml/(m².day.atm) for the main membrane sheet. Novia® Methane Pro 390 has also been tested in different joint applications, achieving ≤13.6 ml/(m².day.atm) for taped joints, and ≤18.3 ml/(m².day.atm) for welded joints.

If installed as a taped system, joints must be installed using the Novia gas tight sealing tapes, using a minimum Novia® Double Sided Butyl tape (50mm minimum width) and Novia® Single Sided Aluminium Foil Lap Tape (96mm minimum width).

Novia® Methane Pro 390 Gas Barrier can be found on NBS Create and NBS Plus software packages. Full information can be found for NBS specification with the table below.

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Key Features

• Roll size: 1.6m x 50m
• Methane, CO₂, Radon gas barrier and DPM membrane, UKCA approved to BS EN 13967
• 390gsm weight and ≥0.4mm in thickness
• BS 8485 compliant joints and sheet to ISO 15105-1
• Suitable for both taped and welded applications
• Multi-layer virgin grade polythene laminated aluminium with a reinforcement scrim
• Tough, tear resistant and reinforced material