![Portland Stone Portland Stone](/media/Logo%20Portland%20Stone.jpg.1920x0_q75_crop.jpg)
Design through the ages
Portland Stone interprets the expressive strength of this ancient rock.
Portland Stone takes a fresh look at a very ancient limestone, as Ergon successfully offers the contemporary design world the ancestral strength of a material that has survived geological eras with its charisma intact.
![Portland Stone - 3966 Portland Stone - 3966](/media/Portland%20Talc%20120X278%20Vein-Cross%20Cut%20Amb%20Living.jpg.1200x800_q75_crop.jpg)
Sizes and colours
9 mm
20 mm
6,5 mm
Finishes
Bocciardato
R11 DIN EN 16165 Annex B
B (A+B) DIN EN 16165 Annex A
Wet ≥ 0.65 WET DCOF
> 0.40 B.C.R.A.
P4 AS 4586
> 36 Low Slip potential BS 7976
3 UNE 41901
Naturale
R10 DIN EN 16165 Annex B
B (A+B) DIN EN 16165 Annex A
Wet ≥ 0.50 WET DCOF
> 0.40 B.C.R.A.
P2 AS 4586
< 36 Moderate Slip potential BS 7976
Naturale 20MM
R11 DIN EN 16165 Annex B
B (A+B) DIN EN 16165 Annex A
Wet ≥ 0.65 WET DCOF
> 0.40 B.C.R.A.
P4 AS 4586
> 36 Low Slip potential BS 7976
3 UNE 41901
Shade variations
![](https://www.emilgroup.com/emil/prodotti/certificazioni_emil/Shade V3.jpg)
V3
V3 High
Intended uses
![HEAVY COMMERCIAL--Alto traffico pedonale (es. stazioni ferroviarie, aereoporti, centri commerciali)](https://www.emilgroup.com/emil/prodotti/certificazioni_emil/Heavy_Commercial.png)