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

Capital Valley Plastics at UK Construction Week 2017

For the second consecutive year we exhibited at UK Construction Week at the NEC. This year was very exciting for us as we launched our premier product, the Radbar Flexible Hydrocarbon membrane, at the event. This is currently the only…

30 Oct 2017
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Awards success

  We are really proud to have won the Excellence in Innovation Award and been finalists in Excellence in Manufacturing at this years Monmouthshire Business Awards. The Capital Valley team enjoyed a fantastic gala dinner and awards ceremony at the…

30 Oct 2017
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