We had French doors installed in a wall with an RSJ lintel above. The wall has been plasterboarded and skimmed and painted and now we're thinking of hanging curtains on 30mm poles. I'm wondering how best to attach the poles. It seems unlikely that the plasterboard alone could take the weight. How hard is it to drill through into the RSJ and what sort of screw should I use?
Would I be better off fixing a batten the full width of the doors?