I’ve plastered my ceiling over artex with multi finish and I’ve never done it before and by the time I finished the first coat it had gone off to quick before I could put on a second coat. Is it possible to still put on a final 2nd coat if so how and if I also muck up the final coat is it possible for a professional to do a 3rd final coat or will it be to much weight for the ceiling?
No you need to remove the pointed bits of the artex. Then plaster so you see no artex then use multi finish.oh don't forget to bond it after removing the snap bits
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First the best way to take on a artex ceiling is plenty of pva and use a thistle bonding its much thicker let it go off preferablly 24hours then come back and put your finish coat on (multifinish). Also you couldnt put a third coat on its to much weight best way to do it is either strip the ceiling or overboard it with new plasterboard
Even one coat of skim over Artex can be too heavy. To be honest (sorry it's bad news) at this point your best bet is scraping it off and skimming over the boards. Obviously check there's no asbestos in it first.