Home Plasterboard & Insulation Loft Insulation Loft Insulation Knauf 100mm (13.89 sqm per roll) Knauf 150mm (9.18 sqm per roll) Knauf 200mm (5.93 sqm per roll) Category: Plasterboard & Insulation Related products Plasterboards Cavity Wall Glassroc Multi Board Insulated Plasterboard