Build robust, fully waterproof wall stud linings and floor foundations with Tile Rite 12mm Ultralight Waterproof Tile Backer Boards. Designed as a direct, lightweight alternative to heavy cement boards or plasterboard, these 1200 x 600 mm boards feature dual-laminated waterproof membranes to stop moisture in its tracks. Easy to cut without producing harmful dust, they provide maximum rigidity for tiling in showers and wet rooms.Key Features & USPs:* Direct Plasterboard Replacement: 12mm thickness matches standard wall construction depth, perfect for lining stud frames in wet environments.* Complete Waterproofing: Dual-sided waterproof membrane ensures total sub-surface protection against rot, mould, and water damage.* Ultra-Rigid & High-Strength: Provides robust support for heavy porcelain slabs, natural stone, and large-format tiles.* Dust-Free Score & Snap Cutting: Pre-marked grid pattern allows clean, quick sizing can be done easily as per required sizes.* Maximum Thermal Insulation: Reduces warmth loss under floor heating and prevents cold spots on exterior-facing tiled walls.Product Specifications:• Brand: Tile Rite• Product Code: ULB074• Thickness: 12mm• Dimensions: 1200mm x 600mm• Coverage per Board: 0.72 m²• Pack Quantity: [5 / 10 / 15 / 20] Boards• Material: Extruded Polystyrene (XPS) Core with Dual Membrane Lamination• Suitable Rooms: Bathrooms, Wetrooms, Showers, Steam Rooms• Suitable Substrates: Timber/Metal Stud Frameworks, Masonry, Timber Subfloors.