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B&Q£349.20Visit shop B&Q - 12.5mm Wallboard Tapered Edge Plasterboard 1800mm X 900mm (X30 Boards)
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The Knauf Drywall 12.5mm Tapered Edge Plasterboard is an ideal choice for contractors and DIY enthusiasts working on interior walls, partitions, and ceilings who prioritize structural stability and a seamless finish. Its primary benefit is the tapered edge design that facilitates easy joint finishing, resulting in a smooth surface ready for paint or wallpaper. While these boards offer excellent durability, the 1800 x 900mm sizing, though convenient for tight spaces, requires careful planning regarding stud spacing compared to larger standard boards.
| Brand | Knauf |
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These boards are designed for standard interior environments. For bathrooms or wet rooms, you should use specialized moisture-resistant board variants.
Use a sharp utility knife to score the paper on the face side, snap the gypsum core, and then cut through the paper on the back side.
Yes, the 12.5mm thickness is the industry standard for domestic ceiling applications.
Yes, they provide a suitable substrate for a thin skim coat of finishing plaster.
Yes, always apply a suitable plasterboard sealer or primer to ensure an even finish and prevent paint absorption variations.
Adjust the depth setting on your drill or use a drywall screw setter attachment to ensure the screw sits just below the surface.
Ensure the underlying studwork is rigid and that you are using a high-quality mesh or paper tape combined with the correct jointing compound.
Handle boards carefully on their edges and store them flat; avoid sliding boards against one another on the floor.
For installation, use standard drywall screws and a depth-adjustable power drill to ensure heads sit just below the paper surface without tearing it. When planning your layout, ensure your stud centers align with the 900mm width of the boards to maintain structural integrity. Always store the boards flat in a dry, ventilated area to prevent sagging or damp-related warping. Keep the edges protected from impact during transit, as damaged tapered edges can complicate the finishing process. If applying a decorative finish, ensure the joints are fully cured and dust-free before priming the surface.
