Due to a small oversight I need to build up a smallish width (by the height of the dooropening) of new plaster to match edge of the tiling - don't ask! Basically the tiles overlap slightly into an opening and the wall of the opening now needs to be built up to meet it.  

The plaster at its thickest will be about 8mm thick tapering to nothing over about 10 inches.  Can I just use finish plaster to do this and if so should I build it up in layers or do I need to use undercoat(?) plaster (browning?).

Many thanks


Nothing is how it was planned

Hi Jerry - It is onto plaster that was put up about 6-8 weeks ago.  Unfortunately the builder did not get the edge perpendicular.  Not that that would have been a real issue but when he set out the tiling he went right to the edge - duh  Have got fed up with waiting as I am getting mild grief to get on with re-decorating the rest of the bedroom.  Difficulty is that it is my own brother in law who is currently keeping my builder occupied

Many thanks Jerry - here goes then