The walls in my flat are old lathe and plaster. At each side of the chimney breast in the living room the plaster has come away from the lathe causing a bulge at each side. I must admit this was caused by myself thumping on the wall to get my a*****e neighbour to turn his music down at 5am in the morning! Not a good move! Is there any way this problem can be repaired without ripping out the effected area, fitting plasterboard and skimming? Any advice would be greatly appreciated. Cheers.