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


We are delighted to have won a prestigious Award for Excellence In Recycling, in partnership with Torfaen CBC and FFC Environmental. Our partnership was awarded first place in the best local authority initiative for the work our Sustainability department has…

23 Nov 2020
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Radbar Radon 400 Membrane

Our Radbar Radon 400 Membrane goes live from today. BBA certified for preventing the ingress of radon. Building regulations and BRE guidance on radon protection have not changed, so the 300 micron radon membrane is still suitable for use.However if…

01 Oct 2020
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