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

Installation training at Capital Valley Plastics

     The first CCS Gas Membrane Installation Training was held at our training facility on the 26th April. The candidates, who are all looking to increase their knowledge and skills when installing gas membranes, undertook a classroom session that…

27 Apr 2018
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New approved installers

We are very pleased to be able to add Betonbauen to our Radbar Approved Installer list. The Betonbauen team are very professional and carry out gas barrier membrane installations to a very high standard. Capital Valley Plastics and Radbar are looking forward to…

03 Apr 2018
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