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Application

Suitable for use on sites previously used as petrol stations, coalfields, landfill sites, contaminated industrial sites, fracking sites and heavily contaminated areas.

Description

A multi-layer, flexible polyethylene membrane, designed to protect against radon, methane, carbon dioxide, ground gas, hydrocarbon, volatile organic compounds (VOCs), air and moisture.


The barrier also acts as a damp-proof membrane (DPM) designed to withstand the most aggressive environments.


Features and benefits:

  • A safe, gas-proof solution for the protection of buildings and occupiers against all levels of radon, carbon dioxide, methane, hydrocarbon and other contaminants.
  • Resistant to moisture, acting as a DPM.
  • Exceptional resistance to a wide range of pollutants, toxic waste and radioactive gases.
  • Can withstand extreme environments.
  • Can also be used as a tanking membrane for vertical applications.
  • CE-marked.

General information

Color

Black

Silver

Material

Polyethylene

Length

Other sizes are available on request. Consult manufacturer for details.

50000 mm

Per standard roll.

Width

Other sizes are available on request. Consult manufacturer for details.

2000 mm

Per standard roll.

Warranty description

60 year

Uniclass

Pr_25_57_65_60 Plastics sheetsPrimary

CAWS

D21/350 Gas-retardant membrane

F30/360 Gas-resistant damp-proof courses/ cavity trays

F30/54 Gas-resistant dpcs/ cavity trays

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

J40/145 Loose-laid weldable polyethylene gas-retardant membranes

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

Specification data - Plastics sheets

Material

Polyethylene.

Purpose

Damp-proof membrane.

Performance characteristics

-

Tensile strength (minimum)

25 N/mm².

Maximum tensile strength (to BS EN 12311-1), machine direction (MD).

Elongation to break

400%.

Tensile elongation MD (to BS EN 12311-1).

Fire performance

To BS EN ISO 11925-2, class E.

Third-party certification

CE marked.

Physical properties

-

Colour

Black.

Silver.

Weight (minimum)

500 g/m².

Dimensions

-

Thickness (minimum)

0.5 mm.

Width (minimum)

2 m.

Roll length (minimum)

50 m.

Colour

Black

Silver

Resistance to impact

900 N.

To BS EN 12691-B.

Permeability

  • Radon permeability: 3.0 x 10–12 m²/s.
  • Methane permeability (to BS EN ISO 15105-1): 0.13 ml/m²/day/atm.
  • Carbon dioxide permeability (to BS EN ISO 15105-1): 3.01 ml/m²/day/atm.


-

Body size

Other sizes are available on request. Consult manufacturer for details.

-

Moisture vapour transmission rate

  • Water vapour transmission rate: 0.93–0.95 g/m²/day.
  • Transmission rate of Benzene (to BS EN 15105-2): 2250 mg/m²/day.
  • Transmission rate of Toluene (to BS EN 15105-2): 2370 mg/m²/day.
  • Transmission rate of Ethyl Benzene (to BS EN 15105-2): 400 mg/m²/day.
  • Transmission rate of Xylene (m,p,o) (to BS EN 15105-2): 690 mg/m²/day.
  • Transmission rate of Hexane (to BS EN 15105-2): 0.15 mg/m²/day.
  • Transmission rate of Vinyl chloride (to BS EN 15105-2): <0.04 mg/m²/day.
  • Transmission rate of 1,1,2 Trichloroethane (TCE) (to BS EN 15105-2): <0.001 mg/m²/day.
  • Transmission rate of 1,1,2,2 Tetrachloroethane (PCE) (to BS EN 15105-2): <0.001 mg/m²/day.


-

Sustainability data

Contains Red List materials

No

Recyclability

Yes

Recycled content

0 %

Literature

MemTech Ground Gas Protection

MemTech Ground Gas Protection

Ground Gas Ancillary Product Brochure

Ground Gas Ancillary Product Brochure

Case studies

Structural Waterproofing & Ground Gas Protection

Structural Waterproofing & Ground Gas Protection

Structural Waterproofing and gas proofing using membranes (twin solutions)

Structural Waterproofing and gas proofing using membranes (twin solutions)

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