KR-02Work out what's behind the lathsLath and plaster is almost always fixed to timber studs, not metal ones — metal stud framing didn't exist when this wall type was built. Run a detector over your marks, then drill a small 2mm pilot hole to check: fine pale timber dust means you've hit a stud, and a softer, gritty feel with no wood dust means you're between studs, in plaster and lath only. If the dust is fine grey metal swarf instead, you actually have plasterboard on metal studs — stop and check your wall type again, as the fixings below are for timber studs and lath, not steel.