|It’s often hard to drill holes in masonry accurately as the drill tends to wander off target so we suggest the following:
Pre-drill your track starting with a 5mm hole in the centre of the length of track. Then drill the other holes at 50cm spacing. Decide on the height at which you want the track and mark with a pencil (see fixing to plasterboard) using the track as a ruler. Mark the position of the centre hole on the wall. Hold the track firmly in position on the wall and using the centre track hole as a guide, drill a 5mm hole through into the masonry. Drill 1cm deeper than the length of your wall plugs. Remove the track and fit the 5mm wall plug into the holes (see illustration 4). If it won’t go full depth the screw allows you to remove the wall plug, redrill and try again.
Screw the track temporarily in place then, using the holes in the track as a guide, drill the remaining holes in the masonry. Unscrew the track and insert remaining wall plugs and screw the track to the wall.