Patent ID: 7591113

Claim:
A system of materials for wall fabrication comprising: (a) plasterboard, and (b) a jointing compound, wherein the plasterboard is surfaced with a lining paper which is printed over the whole of one face of the board with an ink containing binder and particulate solid material having a d 50 mean particle size in a range from 1 to 10 micrometers, with a density of print such that under optical examination at least 80% of the surface of the lining paper is covered by the applied print, and wherein the jointing compound contains particulate material and binder, the articulate material having a d 50 mean article size in the range from 15 to 200 micrometers, where d 50 denotes a number length mean particle size such that 50% of particles have volume smaller than a sphere of diameter d 50 and 50% of particles have volume larger than a sphere of diameter d 50 .