I LAID OUT MY DUST SHEETS AND WASHED THE WALL DOWN WITH WATER TO REMOVE THE SMOKE DAMAGE / RESIDUE, I DRIED THE WALL AND GAVE IT TWO COATS OF STAIN BLOCKER AND AROUND THE AREA OF THE MAIN DAMAGED AREA I HAD TO GIVE IT ANOTHER COAT AS, I ALSO STAINED BLOCKED THE CEILING ABOUT 300 MM OUTWARDS FROM THE WALL AND ABOUT 500 MM ON THE ADJACENT WALL BUT HAD TO STOP AS I RAN OUT OF STAIN BLOCKER, LOOKING AT THE ROOM I THINK IT ALL NEEDS STAIN BLOCKING AND REDECORATING BECAUSE I CAN SEE STAINING AROUND...