What is the floor marble

Marble in the bathroom, non-slip & safe

Whether polished marble or natural stone ... when damp they are sling tracks! Note that marble is a relatively soft rock and is therefore at risk of breaking and is not frost-proof. In general, marble can only be used to a limited extent for outdoor use. If at all, then only in protected locations. And in the bathroom? Thanks to soap and water, the beautiful stone can quickly become a risk of slipping. But there are enough techniques and ways that you can make marble non-slip.


A smooth, polished marble floor is of course easier to maintain than uneven, relief-like or roughened panels. Simply "pushing away" a puddle with the rubber squeegee does not work. The moisture has to be absorbed with a cloth. With built-in underfloor heating, however, damp spots dry off.

Non-slip thanks to laser or chemistry?

Specialist companies can use laser treatment to make natural stone slip-proof - but there is no such thing as absolute slip-resistance! The chemical method is also well established on the market. The natural stones are treated with certain chemical compounds - e.g. with hydrofluoric acid - and thereby blunted. But this is absolutely specialist work, whereby test pieces are treated beforehand in the case of unknown types of stone. You also have to know that the high-gloss polish suffers: less with hard types of marble, but considerably with softer limestone.

Rough stones in trend

Rough or split natural stones are on the rise. They are installed in the bathrooms of many new hotel buildings, but also more and more in the private sector. What is rough, what is "split"? There are two terms for one and the same process. In the quarry, blocks are blasted off and cut into individual slices using mechanical chisel blows. Not every natural stone is suitable for this process. Slate is suitable, especially Scandinavian quartzite slate, which is extremely hard and resistant. The well-known Solnhofen slabs, which have the advantage of being approximately 7 mm thick even when they occur, are also very suitable, while quartzite slate can break into slices of different thicknesses. Here the installer then has to line the thinner panels with mortar, which actually shows that laying these panels is not for do-it-yourselfers, while Solnhofen panels can be laid by skilled do-it-yourselfers. In any case, the following applies: Rough natural stones are first-class slip inhibitors.

Flamed natural stones

Flamed natural stone or flamed marble is not understood to mean a "flaming" pattern on the stone, but a special type of surface treatment that makes the natural stone non-slip. The stone slabs are subjected to a heat treatment, whereby the top layer flakes off and a slightly uneven, rough structure results. They are ideal for bathrooms and terraces.

Marble and natural stone crystallize

Crystallization is a chemical process used to make smooth marble more slip-resistant. However, the method is only suitable for indoor floors. In the case of floors that have already been laid, the natural stone is roughened with steel wool after a thorough cleaning, an emulsion is applied and then polished to a high gloss. The process is also suitable for reconditioning scratched and unsightly floors.

Sandblasted marble

In the meantime, the Italians, who can be described as world champions of marble processing, have advanced so far with the sandblasting technique that they can roughen a marble slab in such a way that on the one hand it creates a slip resistance, on the other hand the floor remains level, which is not the case with rough or flamed stone Case is. Sandblasted natural stone is therefore also very suitable for bathroom floors and terraces, marble - as already mentioned - very good for bathrooms, but only to a limited extent for terraces.

Make it non-slip with the stick machine

A tried and tested method is the use of so-called stick machines, which are not unlike a disc sander. Instead of a grinding wheel, however, dozens of hard metal tips are installed, which are mounted in rubber. When the metal tips now act on the natural stone, small flakes are created here that make the stone non-slip. The process is also suitable for roughening concrete terrace slabs, of course not for ceramic tiles and floor slabs. You can also get stick machines from some machine rentals and then work on your own.