johniosaif
Private Member
We got a job to do in an expensive new block, they wanted the plastering done in sand/cement. the walls were smooth concrete and solid block. They had an old plasterer do the first two flats and gave us three on price. I suggested scudding the walls with sand and cement slurry with pva in it.They wanted the sand to be a mix of building and plastering at 50 50. We scudded and then scratched with first coat four to one sand cement with two shovels of lime in each mix, the second coat was a five to one mix, we then skimmed with multi.Each flat took about seven tonnes of sand/cement. When drying out the walls were showing signs of salts*efferesence* The salts caused some of the plaster to be pitted, the builder said it was the fault of us putting the lime in and that was where the white stuff was coming out was from. I tried to explain it was dampness trapped in the blockwork which got wet during the building works..They never heard of such a thing.what can you say then. I did get paid thankfully but I think they were fairly amateurish.. Your thoughts please..