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Corden EPS Ground Gas Protection Systems

Build up of harmful, asphyxiating and explosive ground gases can enter buildings and other structures on and below the ground. They pose various potential risks to occupants, users and to the structures themselves.

Corden EPS is part of the Corden Group, that has been providing the construction industry with products and solutions for over 20 years. Corden EPS provides ground gas protection solutions with an extensive range of membranes, ventilation products & ancillary products to suit all site situations, all of which meet with current legislation such as:

  • BRE 211 – RADON - Guidance on protective measures for new buildings.

  • BS 8485:2015 - Code of practice for the design of protective measures for methane and carbon dioxide ground gases for new buildings.

  • CIRIA C665 - Assessing risks posed by hazardous ground gases to buildings.  Guidelines on site investigation & gas monitoring.

  • CIRIA C735 - Good practice on the testing and verification of protection systems for buildings against hazardous ground gases.

Corden EPS Gas Ground Protection

Radon is a naturally occurring radioactive gas caused by the breakdown of uranium and radium and is the second biggest cause of lung cancer in the UK.

Carbon Dioxide is a colourless, odourless gas formed as a by-product of decomposing organic matter. High concentrations can result in asphyxiation.

Methane is a colourless, odourless, flammable gas formed as a by-product of organic material breakdown. Levels as low as 5% can be explosive if ignited.

Our team of specialists provide technical advice to assist with all aspects of gas protection from the type of system required to a full design and installation service by CSkills NVQ Level 2 qualified installers with verification/integrity testing by independent consultants.


Corden EPS range of ground gas protection products can provide a combination of products to facilitate the above requirements. Technical data specification are available on the website
under the Gas Membrane section. The Corden EPS Range includes:



As part of our unrivalled service we offer:

* Design solutions offering the most cost effective system to comply with current legislation.
* Independent verification reports (site based).
* Independent integrity testing (site based).
* Next-day delivery.
* Bespoke systems to overcome difficult situations.
* Supply and install service with on-site fabrication/welding.

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