Tri-Gas Membrane

Tri-Gas Membrane

Cordek Ltd

Tri-Gas Membrane is a high performance gas membrane for use in situations where resistance to methane, carbon dioxide and/or radon gas is required.

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Application

Generally used within construction applications, predominantly within the foundation design.

Description

A high performance gas membrane for use in situations where resistance to methane, carbon dioxide and/ or radon gases is required. The multilayer 0.4 mm thick membrane includes an ultralow permeability aluminium foil core encapsulated between a number of additional low density polyethylene (LDPE) layers and a reinforcing grid to form a single sheet membrane.

Features and benefits:

  • Resistance properties with low permeability to ground gases including methane, carbon dioxide and radon.
  • Provides additional damp proofing protection to the structure (no requirement for a separate DPM).
  • Reinforced membrane construction with high resistance to both puncturing and tearing.
  • Complies with relevant industry codes and guidance including CIRIA and BS 8485:2015+A1:2019.

Application:

Generally used within construction applications, predominantly within the foundation design.

General information

Color

Green, Silver

Material

Reinforced low density polyethylene with an aluminium foil core

Size

2000 x 50000 x 0.4 mm

Uniclass 2015

Pr_25_57_65_60 Plastics sheetsPrimary

CAWS

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 damp proofing

J40/145 Loose laid weldable polyethylene gas retardant damp proofing

J40/146 Loose laid weldable polyethylene gas retardant damp proofing with anchors

J40/35 Loose laid plastics or rubber gas retardant damp proofing

Specification data - Plastics sheets

Product Reference

Tri-Gas Membrane

Physical properties

-

Weight (minimum)

370 g/m²

Thickness (minimum)

0.4 mm

Roll length (minimum)

50.0 m

Performance

-

Tensile strength (minimum)

MD 370 N/mm

XD 347 N/mm

Tear resistance

MD 295 N

XD 341 N

Elongation to break

MD 22%

XD 16%

Resistance to underground gases

0.041 ml/day/m2/atm (Methane)

0.195 ml/day/m2/atm (CO2)

Water vapour resistance (minimum)

0.01 gsm/day

Standard product features

Colour:

Green/ silver.

Features:

Has resistance properties with low permeability to ground gases including methane, carbon dioxide and radon and provides additional damp proofing protection to the structure (no requirement for a separate DPM). Has reinforced membrane construction with high resistance to both puncturing and tearing and complies with relevant industry codes and guidance including CIRIA and BS 8485:2015+A1:2019.

Material:

Polymeric composite incorporating an aluminium layer.

Shape:

Supplied in roll form.

Size:

0.4 mm thick x 2.0m wide x 50.0m length.

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