I have tried fixing floating shelves to my plasterboard walls using redidrive plasterboard fixings. There are 10 holes for screws on the shelve brackets. As I was using redidrive fixings the screw holes on the bracket were to close so I could only use 5 of the holes. Unfortunately these did not hold the shelves with books on them. I now have a number of holes in the wall that I have filled with polyfilla.
I have two questions;
1. As the redidrive plasterboard fixings were not strong enough should I be using hollow wall anchors. The shelves can take up to 15kg.
2. Can I re-use the holes now that I have put polyfilla in them or is it better to re-locate the holes?
Thanks for your help.