just looking for a little reassurance really - decorating the hallway in a house we have recently moved in to, The plaster coving has been done very poorly - very uneven, very visible joins etc. I was in 2 minds whether to remove and replace but knew if I didn't it would annoy me. The coving is plaster, I will replace with the polystyrene coving. As i started removing the coving there is quite a large gap between the sheet plaster on the wall and the sheet plaster on the ceiling - like an inch or so. I kind of expected the two to meet. There's no danger that the coving was helping support the roof sheets and by removing the coving I risk the roof sheets dropping?