Radbar® Flexible Hydrocarbon Membrane

A specially engineered tri-polymer membrane which provides a highly effective barrier against radon, methane, carbon dioxide and hydrocarbon gases. Hydrocarbon gases are formed as a by-product of decomposing organic matter, a build-up of these colourless gases are explosive which could have devastating consequences. The membrane is manufactured from a uniquely formulated blend of polymers to produce outstanding chemical resistance, mechanical properties, dimensional stability and thermal aging characteristics. Ideally suited for sites formerly used as coalfield, landfill or industrial sites which previously contained volatile liquids; petrol stations for example.

As part of the extensive testing the membrane has undergone, it was subjected to accelerated life immersion tests. These tests; EN 14414 and EN 14415, require the membrane to be subjected to a range of challenge chemicals at 50°C and then retested to establish any affects these chemicals have had on the integrity of the membrane.


  • Excellent resistance to chemical and hydrocarbon gases.
  • Suitable for hot welding.
  • Very high puncture and tear resistance.
  • Compatible with vented systems.
  • Part of the Radbar Hydrocarbon System.
  • Outstanding flexibility properties making it easy to install, especially when compared to HDPE films.
  • Superior mortar adhesion to prominent embossing to prevent slip planes when being used as DPC.
  • CE marked, Type A EN 13967:2012.

General information


Excellent resistance to chemical and hydrocarbon gases

Suitable for hot welding

Very high puncture and tear resistance

Compatible with vented systems

Part of the Radbar Hydrocarbon System

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Uniclass 2015

Pr_25_57_21_35 Gas-resistant damp-proof coursesPrimary


D21/350 Gas-retardant membrane

D21/38 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 damp proofing

Specification data - Gas-resistant damp-proof courses

Product Reference

Radbar® Flexible Hydrocarbon Membrane



Radbar double sided gas tape

For jointing membrane edges.

Radbar single sided gas tape

For sealing overlapping membranes.

Standard product features

Size (l x w):

20 x 1.3 m.


1000 micron.


0.925 g/cm³.



Third party certifications
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