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

Radbar Flexible Hydrocarbon Membrane gets BBA Certificate

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…

09 May 2017
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NMBS Exhibition

Busy day at the Ricoh Arena, Coventry for this years NMBS show                                      

06 Apr 2017
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