Individual scaling of multiple faces

Hi,

I’d like to ask one really embarassing question. I have a group of connected faces (eg. on the floor) which I’d like to extrude and scale individually. And the problem is - whatever I do, faces tend to be scaled to one, common point.
All the answers I found (Individual Origins, “ctrl + ,”; “ctrl + .”) doesn’t work. If I use it Individual Origins, all the faces still behaves like with the Median Point, though they get really messy (they wont be simmetric anymore).

Any ideas?

Alt+E / Scale Individual Faces and pivot set to Individual Origins

Thanks a lot.