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

Patmos Medical Health Centre, Ghana

Capital Valley Plastics are very proud to be in partnership with Pora Ventures, Ghana, working on a 100 bed facility – Patmos Medical Health Centre in Nkoransa – Brong Ahafo Region of Ghana to help prevent rising damp. We have…

20 Nov 2019
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Responsible Business Champions Reception

We are very proud to have been one of only twenty companies nationwide to have been nominated for the 2018 Responsible Business Champions Award. Roger went down to Westminster to a reception hosted by the All Party Parliamentary Corporate Responsibility…

05 Jul 2018
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