A plasterer told me he once started work on a ceiling and it went off straight away. It turned out the plasterboard had been up too long and had dried out.
I am just about to skim a couple of small areas, the biggest is 4 square meteres and the board is bone-dry without any smell. It has been up for a year.
Shall I just go for it, or in your experience, would you wet if first? If so how?
Cheers Robin Pain