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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

50000 mm

Guidance for specification option:

Per standard roll.

Manufacturer guidance

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

Width

2000 mm

Guidance for specification option:

Per standard roll.

Manufacturer guidance

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

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.

Guidance for specification option:

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

Elongation to break

400%.

Guidance for specification option:

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.

Guidance for specification option:

To BS EN 12691-B.

Permeability

-

Manufacturer guidance

  • 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

-

Manufacturer guidance

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

Moisture vapour transmission rate

-

Manufacturer guidance

  • 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

As defined in clause 7.8 of BS EN ISO 14021

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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