Home / Plasterboard / Vapour Resistant Plasterboard Vapour Resistant Plasterboard Vapour panel plasterboard has a metallised polyester foil creating an effective vapour barrier to limit moisture diffusion, ideal for lining external walls and roofs. Sort By Most popularWhat's newPrice low to highPrice high to lowName A to ZName Z to A 1 Product Sort 12.5mm Knauf Vapour panel / Duplex Plasterboard 1200x2400mm Tapered Edge £16.22 £13.52 (ex. VAT) Add to Cart