Hi, I’m planning on removing the fibreboard ceiling tiles throughout my entire upstairs and replace with plasterboard. I’ve looked in the loft and the fibreboard tiles are fixed onto wooden furring strips that run across the joists. Should I keep or remove the furring strips when fitting the plasterboard? If I remove the furring strips I think the ceiling will be higher than the brick partition wall between two rooms so there would be a gap between the ceiling and wall, is that normal? I’m planning on fitting coving so it won’t be seen but just seems odd to not have the ceiling edges meet the walls. If it helps, joists are on 400mm centres, furring strips are wooden and are probably 1”x0.5” on 400mm centres, ceiling tiles are 400mm square. Any advice would be much appreciated!