BC-07Choose the right fixing for your wallOn dot-and-dab, drill through the plasterboard and the 25-50mm dab gap and into the solid masonry behind, then use a long masonry plug and screw (typically 60-75mm) so the screw grips the brick or block, not just the board. On solid brick or block with no dot-and-dab layer, a standard 40-50mm wall plug and screw is enough. On a timber stud, drive a wood screw straight into the centre of the stud; if there's no stud where you need one, fit a timber noggin between the studs first rather than relying on the plasterboard alone. On a metal stud, never use a plastic wall plug or an ordinary wood screw — 0.5mm steel strips instantly. Use self-drilling metal-stud screws into the stud itself, or a toggle-type hollow-wall anchor rated for the cabinet's loaded weight if fixing between studs. On lath and plaster, locate the timber laths with your detector or a pilot hole and screw into them directly; avoid pulling fixings tight too fast, as old lime plaster can crack.