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 Launch

Welcome to Capital Valley Plastics’ new website! After careful planning and a lot of hard work we are proud to launch our new website. As you can see it is a big leap forward and we hope, in addition to being…

30 May 2014
Continue Reading
Increased Output – Reduced Carbon Footprint?

Over the past few months here at Capital Valley we having been working hard to reduce our environmental impact. In partnership with Carbon Trust we have been actively looking at ways to decrease our carbon footprint, reviewing every stage of…

24 Jun 2015
Continue Reading