If you are thinking of making your own marble staircase, you should first know that the choice of material to be used for it is crucial.
Different types of marble with different mechanical properties exist in nature.
Some types of marble such as Statuary marble or veined marble are more suitable for making staircases for indoor use, this is because they would be too delicate for outdoor use, in addition, these two types of marble due to their veining are particularly suitable for making staircases with a high design effect.
Once you have chosen the type of material to be used to make your staircase, you will need to choose the type of finish for it.
First we need to determine whether we are talking about an indoor or outdoor marble staircase, this is because outdoor stairs cannot have a polished or honed finish as they would be too slippery after a rainy day.
The finishes that can be used for outdoor marble stairs are: bush-hammered or brushed, as for indoor stairs as mentioned above the finishes are: polished or honed.
Different discussion for rib and skirting trim, in fact any type of trim can be used indifferently on both indoor and outdoor staircases. Specifically, the ribs can be worked with the following finishes:
Bullnose edge: consists of the rounded edge processing capable of giving total continuity to the entire plane and a very elegant effect;
Straight edge: this is the simplest processing, as it has the same thickness as the work surface but with a straight finish;
Half-bullnose rib: unlike bullnose, half-bullnose starts with a soft, rounded shape and ends straight at the bottom;
Straight square edge: with or without bevel, or with “light bevel” or deeper bevel depending on the desired results