MA-04Choose the right fixing method for your wallOn solid brick or block, use a suitable plug and a screw driven into a drilled hole of the matching size, typically 50-60mm deep. On plasterboard over timber studs, put a wood screw straight into the centre of the stud wherever you can. On plasterboard over metal studs, never use a wood screw or a plain plastic plug — 0.5mm steel strips instantly — use a self-drilling metal-stud fixing, but remember this still will not take a monitor arm's pulling force on its own. On dot-and-dab, you need a fixing long enough to pass through the board and the adhesive dabs to reach solid masonry behind, often 75-90mm. On lath and plaster, avoid relying on the thin laths alone; find a joist or stud behind them, or use a fixing rated specifically for lath and plaster ceilings or walls.