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

London redevelopment with Radbar

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…

24 Aug 2017
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Not all Plastics manufacturers are bad!

  In the last twelve months we have recycled in excess of 9000 tonnes of post industrial waste. This waste, that would have been destined for landfill, is now being used to produce damp-proof membranes, damp-proof course and other films for…

16 Aug 2017
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