Capital Valley Plastics

Manufacturers of Gas Barriers, Damp Proof Membrane & DPC since 1987

Founded in 1987, CVP is an award winning manufacturer based in Cwmavon (South Wales). Situated within its own private grounds in the Welsh valleys, we have proven that industry can work with nature.

Our efforts to pro-actively and relentlessly improve our methodology behind every aspect of the business means that we are able to provide leading edge products with a sophisticated and reputable service.

Our Products


Radbar products are a specialist group of materials for the building industry, that have optimum technical specification and value for money. They include specialist damp proof courses, radon barriers, gas barriers and hydrocarbon barriers.


At Capital Valley Plastics we also manufacture a full range of entry level products, including damp proof membranes, general purpose sheeting and damp proof course. All of these are 100% recycled where building regulations allow.


Latest News

BBA Chief Exec Visits Capital Valley Plastics

                  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…

24 Jul 2017
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New addition to the Radbar Approved Installers list

   ND Civils & Groundworks Ltd are the newest approved Rabar installers. On site training was provided yesterday and the site team, Kev, John and Isaac showed a very good understanding of the installation process. Having installed Gas Barrier Membranes…

12 Jul 2017
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