AB-06Fixing into masonry, dot-and-dab, or lath and plasterFor solid brick or block, drill with a 6mm masonry bit to 45mm depth, fit a red wall plug, and drive a 40mm screw. For dot-and-dab plasterboard, the board sits on foam dabs over an air gap before the masonry — use a fixing at least 75mm long with a matching plug so the screw reaches solid masonry, not just the plasterboard skin. For lath and plaster, the old lime plaster is fragile — drill a small pilot hole first and check what comes out; if you hit a timber lath, fix into it directly, otherwise use a plasterboard-rated toggle fixing and avoid heavy panels unless you can find a noggin.