Floors in natural stone
Floors in natural stone
Floors in natural stone
Floors in natural stone
Floors in natural stone
Floors in natural stone
Floors in natural stone
Floors in natural stone

Floors in natural stone

As with parquets and floorboards, the value of a reusable natural stone floor largely depends on its finish and its patina. Most reusable stone floors are just as suitable for outdoor use (patio, landscaping, etc.) as for interiors (restaurant floor, living rooms, etc.). This type of floor covering works well with an underfloor heating system.
Some batches of reusable stone flooring come from old wall facings. More rarely, old floors are reused as facing.

Common products

The most common products are:

  • Square or rectangular flagstones: in marble, blue stone, granite, etc.
  • Blue stone church flagstones: These are old flagstones of variable dimensions, square or rectangular. The upper surface is smooth, and the lower surface is very irregular. They are quite thick (~15 cm).
  • Bourgogne flagstones these are large, thick flagstones, very common on the French market, and taken from old buildings. The typical usage consists of putting together rectangles of different formats. Attention: this product is the subject of imitations made of artificially aged new stone.
  • Stones for opus incertum (irregular work): blends using fragments of broken flagstones.

Available treatments

Some treatments carried out on the stone floors:

  • Sorting by size
  • Cleaning of any traces of mortar underneath the slabs or on the edges.
  • Sawing through the thickness for some types of thick flagstone. One example of this is Bourgogne flagstones: their appearance is much appreciated, but their thickness of over 10 cm is not suitable for contemporary deployment techniques. To cut horizontally through the thickness of these slabs, the operators use a circular saw with a very large diameter.
  • Note: In general terms, reusable slabs are only adapted in one dimension (thickness, length or width), because multiplying the number of cuts would represent a prohibitive cost. It is also very unusual for reusable slabs to undergo surface treatment in the workshop, as the general rule is to preserve their patina.

Recorded prices

The recorded prices are as follows:

  • Church slabs: 140€/m² (100€/m² on repurchase, disassembled and in very good condition)
  • Sawn Bourgogne slabs: ~250 €/m² for the upper part; 20 to 30 €/m² for the lower part, considered to be a co-product.
  • Fragments of blue stone flagstones for opus incertum work: 20 €/m²

Choice of system (opus)

A central question when laying a reusable stone floor is the choice of system - i.e. how the flagstones are laid in relation to each other. Some systems offer a dimensional tolerance that makes the option of reusable flagstones more likely. For example, a ‘free-length’ pattern makes it possible to create a floor from stones of variable length but constant width. Irregular work (opus incertum) means you can work with any fragments of broken flagstones.