BD-05Fit backing support behind the trackA metal stud on its own will not hold a barn door track. The door pulls sideways every time it slides, and 0.5mm steel will bend and tear over time. On metal studs, fix a length of 18mm exterior ply, at least 150mm wide and running the full length of the track, across the stud line using self-drilling metal stud screws (25mm) every 300mm. On timber studs, do the same if your bracket spacing does not land on stud centres (studs are usually 400-600mm apart); if it does line up, you can screw straight into the stud centres instead. On solid brick or block, no backing board is needed — fix directly into the masonry. On dot-and-dab, check the air gap behind the board (usually 20-50mm) and plan to use fixings long enough to pass through it into the masonry, or fit a backing board fixed through to the brick. On lath and plaster, locate the timber studs behind the laths and plan to fix through the plaster and lath into solid timber, not into the lath alone.