Radon 400

Radbar Radon 400 Membrane

October 1, 2020

Our Radbar Radon 400 Membrane goes live from today. BBA certified for preventing the ingress of radon. Building regulations and BRE guidance on radon protection have not changed, so the 300 micron radon membrane is still suitable for use.However if BBA certification is needed the Radon 400 Membrane is for you.

Installation training at Capital Valley Plastics

April 27, 2018

The first CCS Gas Membrane Installation Training was held at our training facility on the 26th April. The candidates, who are all looking to increase their knowledge and skills when installing gas membranes, undertook a classroom session that included information on ground gases and their possible effects. Verification was then covered, but uniquely, from a “what to expect as an installer from the independent verifier” point of view.  All candidates then went through an extended hands on practical session covering all aspects of installation including jointing with tapes and by welding and detailing pipe penetrations and corners. All practical work undertaken by the candidates was then verified, as it would be on site. A pick probe, air lance

Site visit reports

London redevelopment with Radbar

August 24, 2017

A former London timber manufacturing factory is being redeveloped into high end apartments with the help of Radbar Flexible Hydrocarbon Membrane. Due to the previous use contaminants were found during the site investigation, Radbar Flexible Hydrocarbon Membrane prevents chemical and vapour ingress into the building, this gives the developers and future residents peace of mind. Technical Manager Mat visited site to give installation guidance, all part of the Radbar service. For more information regarding any of the Radbar Gas Barriers please don’t hesitate to give us a call. For more information regarding any of the Radbar Gas Barriers please don’t hesitate to give us a call.

BBA Chief Exec Visits Capital Valley Plastics

July 24, 2017

We had the pleasure of hosting Claire Curtis-Thomas, Chief Executive of the British Board of Agrement on Friday. Claire presented Roger, our MD, with the BBA certificate for our Radbar Flexible Hydrocarbon Membrane. This is the first Hydrocarbon membrane to be certified by the BBA. The whole team at Capital Valley Plastics would like to thank Claire and her team at the BBA for their on-going support

Radbar Flexible Hydrocarbon Membrane gets BBA Certificate

May 9, 2017

We are thrilled to announce that our Radbar Flexible Hydrocarbon Membrane and Radbar Hydrocarbon DPC are the first flexible hydrocarbon barriers to be certified by the BBA. Radbar Flexible Hydrocarbon Membrane protects against Hydrocarbons, VOC’s, methane, carbon dioxide, radon and moisture. It also complies to BS 8485:2015 for use on CS3 and NHBC Amber 2 sites. The membrane can be jointed using double and single sided tapes or by welding, as several installation companies have reported it “welds beautifully”. Radbar Flexi Hydrocarbon membrane is supplied on rolls 1.3m wide and 20m long, the membrane is 1mm thick and extremely flexible, making detailing corners and penetrations easy.

Technical support

The team at Radbar will be pleased to assist with any technical queries that may arise.


Here you can obtain certificates, installation guides and more relating to Radbar products.

Get in touch

Capital Valley Plastics Ltd
Cwmavon Works,
nr. Pontypool
Gwent NP4 8UW

01495 772255

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