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Visqueen Ultimate Gas Barrier NF-600 - Gas, VOC, Radon and Damp Proof Membrane

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Visqueen

Multi-layer thermoplastic volatile organic compound (VOC) and gas barrier.

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Application

Used in all types of buildings to prevent the ingress of harmful levels of volatile organic compounds (VOCs), methane, carbon dioxide and radon.

The barrier can be positioned above or below reinforced cast in situ concrete floor slabs e.g. ground bearing, suspended or raft, or above precast suspended segmental subfloors, e.g. beam and block floor.

The barrier can also be used as a high performance radon membrane and/ or damp proof membrane.

Where protection against VOCs or hydrocarbon contamination is required, the barrier system should be applied with welded joints.

For site or zone characteristic gas situations of CS4 and above, contact Visqueen Technical Services.

The barrier is not intended for use where there is a risk of hydrostatic pressure.

Description

A co-extruded, multi-layer thermoplastic volatile organic compound (VOC) and gas barrier, 0.6 mm thick (600 micron). The membrane is transparent with a blue tint and supplied 2 x 50 m in a single wound roll.

Features and benefits:

  • Agrément certified - third party accreditation.
  • Complies with CIRIA C748:2014 - industry standard for volatile organic compounds (VOC) protection.
  • Also provides radon and damp proof membrane protection.
  • Dual jointing methods - depending upon specification, lap joints can be taped or heat welded.

Approvals and standards:

  • Third party accreditation (BDA Agrément Certificate BAB-24-339-P-A-UK).
  • Complies with the methane gas transmission rate, mass per unit area and thickness requirements of BS 8485:2015 + A1:2019.
  • Suitable for all Characteristic Gas Situation (CS) ground gas regimes.
  • Complies with NHBC Foundation NF94 guidance for use in Type A and Type B membrane locations (non foil system).
  • Conforms to the specification requirements of NHBC Amber 1 and Amber 2 applications.
  • Conforms to the specification requirements of BR 211:2023.
  • UKCA UKNI CE to EN 13967:2012.

Should be installed in accordance with the manufacturers recommendations.

General information

Color

Clear

Blue

Finish

Other

Material

Plastic

Guidance for specification option:

Thermoplastic.

Shape

Rectangle

Length

50000 mm

Width

2000 mm

Height

0.6 mm

Warranty description

-

Manufacturer guidance

See manufacturer's insurance document for warranty details. Consult manufacturer for further information.

Uniclass

Pr_25_57_65_60 Plastics sheetsPrimary

CAWS

J40/297 Waterproofing/ damp-proofing/ gas-retardant membrane

J40/140 Loose-laid plastics or rubber sheet gas-retardant membranes

J40/35 Loose-laid plastics or rubber gas-retardant membranes

Specification data - Plastics sheets

Classification data

Product reference

Visqueen Ultimate Gas Barrier NF-600.

Material

Thermoplastic.

Purpose

Gas retardance.

Standard

To BS EN 13967.

Third-party certification

BDA Agrément certificate.

Guidance for specification option:

Certificate BAB-24-339-P-A-UK.

Performance characteristics

-

Tensile strength (minimum)

Machine direction: 28.7 N/mm².
Cross direction: 24.8 N/mm².

Manufacturer guidance

To BS EN 12311-2.

Tear resistance

Machine direction: 365 N.
Cross direction: 330 N.

Guidance for specification option:

Consult manufacturer's literature for trouser and angle method data.

Manufacturer guidance

To BS EN 12310-1.

Elongation to break

Machine direction: 901%.
Cross direction: 814%.

Manufacturer guidance

To BS EN 12311-2.

Resistant to underground gases

Carbon dioxide.
Methane.
Radon.

Water vapour resistance (minimum)

5826 MN·s/g.

Manufacturer guidance

To BS EN 1931.

Form

Multi-layer.

Physical properties

-

Colour

Blue/ clear.

Weight (minimum)

570 g/m².

Dimensions

-

Thickness (minimum)

600 µm.

Width (minimum)

2 m.

Roll length (minimum)

50 m.

Joint strength

Taped joint: 254 N/50 mm.
Welded joint: 401 N/50 mm.

Manufacturer guidance

To BS EN 12317-2.

Watertightness

Pass.

Guidance for specification option:

Watertightness at 2 kPa for 24 hours - BS EN 1928.

Watertightness at 2 kPa for 24 hours after ageing - BS EN 1296.

Watertightness at 2 kPa for 24 hours after alkali environment - BS EN 1847.

Impact resistance

350 mm.

Manufacturer guidance

To BS EN 12691.

Water vapour permeability

0.06 g/m²/d.

Manufacturer guidance

To BS EN 1931.

Resistance to static loading - 20kg load

20 kg.

Manufacturer guidance

To BS EN 12730.

Application temperature

Recommended should not be used below 5°C.

Methane transmission rate

13.2 ml/m²/day/atm.

Manufacturer guidance

To BS ISO 15105-1.

Carbon dioxide transmission rate

28.7 ml/m²/day/atm.

Manufacturer guidance

To BS ISO 15105-1.

Radon transmittance

1.3 +/- 0.2 x 10-13 m²/s.

Manufacturer guidance

To PD ISO/TS 11665-13.

Accessories

Not required.
VisqueenPro Double Sided Jointing Tape, 50 mm x 10 m.
Visqueen TreadGUARD 1500, 1 x 2 m.
Visqueen TreadGUARD 300, 2 x 75 m.
Visqueen NF-Detailing Strip, 300 mm x 10 m.
Visqueen NF-Detailing Strip, 500 mm x 10 m.
Visqueen NF-150 Lap Tape, 150 mm x 10 m.

Sustainability data

Material

Plastic

Guidance for specification option:

Thermoplastic.

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