This is my situation, I have one wall (plaster board) half of which was tiled and I have removed the tiles. The other half of the wall (untiled) had previously been skimmed (approx 2/3 mm) On removing the tiles I now have half a wall unskimmed and half a wall skimmed. I am going to tile the complete wall but need to skim the other half to make it level with the skimmed section. I have never done this before but I am assuming reasonable (but not perfect) accuracy would be ok as its all getting tiled. I am looking to use strips of cardboard which is the same thickness as the skimmed section pinned vertical to the wall at a distance just slightly under the width of my trowel, the vertical sections will act as a guiide and will then give me consistent thickness of `skim`. When this is dry I will remove the cardboard strips and then use the already skimmed sections as a guide to skim where the carboard strips were, I am hoping this will then give me an overall `skim` of consistent thickness. The wall to be skimmed is only 6` x 8.5`. Anyone got any thoughts on this, like should it work ok or anything else I should know about.
thanks