I have a narrow concrete stair front door like so:
I want to make it larger and nicer like this
It doesn't need to be limestone but any outdoor stones/tiles is fine.
Can I make it "wider" by framing concrete on both side of the stairs now?
Then I would just put mortar and install tiles/stones on top of the concrete. Would there be any problem with that?
What is the thinner stone material for outdoor for this case?