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

Proud to support Blaenavon RFC

Capital Valley Plastics are very proud to support our local Rugby Club, Blaenavon RFC. We can’t wait until it is safe to get the season back underway.

18 May 2020
Continue Reading
More Capital Valley Plastics membrane for the NHS front line

  We continue to produce high quality membrane to assist in the fight against Covid 19. This latest batch is for NHS Glasgow.         Great quality membrane for separating zones, covering trolleys and medical devices or for wrapping contaminated equipment…

20 Apr 2020
Continue Reading