You have to be careful if thinking of removing high points/sanding as Artex can contain asbestos.
I was asked over the weekend if I can make 2 heavily textured artexed ceilings flat. I did something similar last year so here’s what I’m doing:.
Took samples from both ceilings, bagged them up and sent them to Cornerstone Safety (http://www.diyasbestostesting.co.uk). It cost £40 for the 2 samples to be tested. I posted them recorded delivery yesterday and I was emailed the testing report in pdf format this evening. Both samples tested negative for asbestos.
Clear the rooms of all fixtures and fittings and cover the floors with strong polythene sheets. Steam softens artex so I will get my steamer set up in a room and leave it to fill the room for half an hour or so. Once it is soft enough I will then scrape it off just as you would wallpaper. Even though the tests for asbestos were negative I will still be wearing a coverall with hood, goggles and mask.
Once all scraped off I will let it dry and then sand with Mirka Deros. Carry out any repairs, sand, clean off, primer/sealer, line and paint.
Take waste artex to local waste disposal depot with my test certificate for safe disposal.