On Friday, 29 January 2021 at 08:37:48 UTC, wrote:
When I moved into my house in 1975 all the ceilings were done with polystyrene type materia.It was about the same width as a roll of wallpaper and must have came in rolls. When you look up at it looks like all the pieces of a jigsaw puzzle and it is very hard to paint if ceiling gets dirty from smoke. Does anyone know the name of this material? I would like to remove it but am afraid to start . Has anyone ever removed this and is it hard to remove. There is also polystyrene? coving round the walls as well.

Our bungalow when we moved in had polystyrene coving I have removed it from all but one room so far. A good scraper easily removes the coving the harder task is removing the adhesive. With judicious water spraying I found out that the adhesive will scrape off but it needs a bit of time spent doing it.