I’ve not done this before

Not on a house anyway. I’ve used sheets of the film that’s used to mask up cars for painting to mask up my kitchen floor prior to rubbing down the ceiling and wall plasterwork. I’m not too worried about some dry plaster dust falling onto the tiles as it’ll brush off but I want to catch the worst of it and also protect the floor when I spray the ceiling, coving and tops of the walls with sealing undercoat.

This is what it’s all about. As I found when I did the ceiling and walls in the living room and corridor before the floor tiles were laid, just a little rubbing down creates an awful lot of plaster dust.

Tomorrow I’ll wipe the ceiling, coving and wall tops with a damp rag and when it’s dry use my ‘pulverisateur’ airless sprayer to give them a coat of sealing undercoat. I haven’t yet decided whether to try doing all of the walls because that would need the dust to be removed without damaging the film and creating a mess and for the masking to be securely attached all around to protect the floor tiles. I’ll have to see how things go.