Basically, has anyone done this or got any experience of it, especially cost and whether it's DIY-able?
This is what it looks like:
www.google.co.uk/search?q=self-levelling+overlay&hl=en&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwiB5sO1gL_OAhWJJMAKHdZrCMcQsAQIXg&biw=1366&bih=634
I have a concrete floor I was going to tile but it probably needs levelling first with that self-levelling compound stuff and I just thought is it possible to have that stuff as the finished floor instead of tiles - because I don't really have a tile preference...