What sizes and thicknesses of Giallo Siena marble are there?
We hold 15, 18 and 20 mm as standard stock.
How much, and how heavy

40.65 kg per square metre at 15 mm, 48.78 kg at 18 mm and 54.20 kg at 20 mm, at the published apparent density of 2710 kg/m³. These are nominal thicknesses, and calibration takes one to two millimetres off, so a weighed slab reads slightly below the calculated figure.
| Thickness | Nominal weight per m² | Source |
|---|---|---|
| 15 mm | 40.65 kg/m² | Derived from the published apparent density |
| 18 mm | 48.78 kg/m² | Derived from the published apparent density |
| 20 mm | 54.20 kg/m² | Derived from the published apparent density |
| Apparent density | 2710 kg/m³ | EN 1936-07, both published sources agree |
The weight follows from the thickness and the density, and the density is published to EN 1936-07 by two sources that agree on it. The only thing between that number and a scale is calibration, which removes material and is why a nominal figure reads light.
What these figures are, and what they are not These are calculated from a published density, not weighed figures for a particular slab. The calculator on this site does the same arithmetic and lets you set the allowance.
We hold 15, 18 and 20 mm as standard stock.
Yes.
This answer sits on the How much, and how heavy page, with the rest of the questions about it.
CalculatorA thickness, a format, a finish, a quantity and a destination will get you a quotation for Giallo Siena marble.
How much does Giallo Siena marble weigh per square metre?