PR-05Drill and fit the right fixing for your wallFor dot-and-dab plasterboard, drill through the board and the air gap behind (usually 25-50mm) into the solid masonry, and use a long fixing, typically a 60-75mm frame fixing or a long screw with a dot-and-dab-rated plug, so at least 30mm bites into the brick or block. For a timber stud, drill a 3mm pilot hole into the centre of the stud and drive in a 50-60mm wood screw directly - no plug needed. For a metal stud, never use a wood screw or plastic plug; use a self-drilling metal-stud screw or a toggle-type hollow-wall anchor rated for the load, and remember a metal stud alone will not safely hold a loaded plate rack long-term - fix into a timber noggin fitted between the studs, or through to the masonry behind, if you can reach it. For solid brick or block with no dot-and-dab layer, drill with a 6-7mm masonry bit to 40mm depth, insert a matching wall plug, and drive in a 50mm screw. For lath and plaster, find the timber laths (spaced roughly every 25-30mm behind the plaster) with a pilot hole and fix into a lath edge or the joist behind it - plaster alone will crack and pull away under load.