Gray Structure


Radbar Radon Gas Barrier (Red)  BBA Approved 400mu.

4m x 20m Radbar Radon Red £79.00 per roll. (min order 5 rolls).

Radbar Radon 400 membrane, a robust 400 micron thick membrane that is manufactured from the highest grade virgin materials to prevent the ingress of radon into buildings.


Radbar Radon Gas Barrier (Red) BBA Approved 400mu. 4m x 20m Radbar Radon Red £79.00 per
roll. (min order 5 rolls).

Radon is an invisible radioactive gas that is formed when the small amounts of uranium in rocks and soils decays. It is found everywhere, but at varying levels. Radon can cause health issues, including increasing the risk of cancer in certain instances. Some areas of the UK have a greater chance of high radon levels and new build properties in these locations need protecting. 

Ground gases is a term that refers to gases found across the UK and Ireland in the spaces that exist around soil particles (pore spaces). These gases include radon, and radon poses other health risks including cancer.

Radon gas occurs naturally and if you are building properties on gas-contaminated land, then you need to provide protection from these harmful gases. 

It is essential to first determine the ground gas risks of your site – this can be through a site inspection and gas monitoring in some instances. When it comes to Radon, you can use the radon map from Public Health England to get an indication. 



When building on land where ground gases are present, it is essential to take steps to minimise the chances of gases entering a property. Building Regulations must be carefully followed. One of the most widely available options is gas membrane protection.


Gas membranes are usually plastic sheet membranes that prevent ground gases from passing through them. They are ordinarily installed during construction and form part of the foundation design. 

Gray Structure

Usually used in New Build situations, Radon Membrane is a high-performance gas membrane, for use in applications where resistance to radon gas is required as part of either a ‘full’ or ‘basic’ radon protection system. The membrane is generally used within construction applications, predominantly within the foundation design. It can also act as a high performance DPM.

The idea that harmful, invisible gases may be entering a home is a scary one. If you are building a new property, extending your home, or having your basement converted, you need to consider the potential risks of radon and other ground gases.

Available from Radon Protection UK. Enquiries / orders please call: 0800 978 8435

Radon Membrane.jpg
Gray Structure

In many areas radon gas isn’t an issue, but in some locations it can pose a significant risk. To protect new build properties from ground gases like radon, you can install gas membranes.

Radon Membrane Features

  • Economical method of providing radon protection to newly constructed buildings

  • Ultra-Radon Barrier forms an effective passive barrier against Radon gas penetration

  • Designed to meet the needs and requirements of the BRE document, whilst needing no special skills for installation.

  • The homogeneous membrane is a blown extruded blend of virgin polymer HDPE and LDPE to maximise its resistance to the gas.

  • This co-polymer blend also gives the product extraordinary strength and tear resistance, particularly when compared with ordinary DPM.

  • The film will also act as a proprietary damp-proof membrane and is available in two thicknesses. The membrane has enormous integral strength and requires no reinforcement.

Gray Structure


Gas membranes prevent ground gases migrating from the soil and into a property where they can accumulate and pose significant risks. As previously explained, ground gases can be harmful to health and therefore it’s important to avoid exposure to them. The installation of a gas membrane should feature in the foundation designs of a new build property.