40 mm Kota Stone overview
Heavy-duty stone for industrial, parking and steps. The right thickness depends on the base (sub-floor) condition, installation method, expected loads and whether the stone is supported fully on mortar.
Kota stone laid on a full mortar bed over a solid concrete base handles loads mainly through the base. Thicker stone is preferred where vehicles, trolleys, heavy furniture or point loads are expected, and for steps where edges overhang.
Un-calibrated Kota varies in thickness within a slab. If you specify an exact thickness, ask for calibrated material and confirm the tolerance.
Available sizes and thicknesses
Typical formats in the Kota stone trade. Availability of each combination for 40 mm kota stone changes with stock — please confirm before ordering.
| Format | Sizes | Thickness |
|---|---|---|
| Tiles (standard cut) | 16×16, 18×18, 20×20, 22×22, 24×24 in | 20–25 mm typical |
| Rectangular cut | 24×12, 24×18, 4×2 ft | 20–30 mm typical |
| Random / un-calibrated slabs | Mixed lengths approx. 2–6 ft | 20–40 mm |
| Custom cut | As per drawing | On request |
Finishes
- Natural
- Polished
- Rough / anti-skid
Use polished or semi-polished finishes for dry interiors, and rough, natural or anti-skid finishes for outdoor, wet and sloped areas. See the sizes & finishes guide.
Applications
- See guidance above — matched to load and base
Advantages and limitations
Advantages
- Matching thickness to load reduces cracking risk
Limitations
- Thicker stone is heavier and costs more to transport
40 mm Kota Stone price
The price of 40 mm kota stone depends on grade, colour, thickness, finish, size and cutting, order quantity, freight to your site, loading/unloading, GST and current market conditions. Contact us for the latest Kota Stone price based on your required product, size, finish, quantity and delivery location.
Read more in our Kota stone price guide.
Buying guidance
- Ask for photos or a physical sample of the actual lot, not a catalogue image.
- Choose grade by visibility: selected grade for living areas, standard grade for back areas.
- Match finish to the area — never mirror polish on wet exterior surfaces.
- Calculate area in sq ft and add 5–10% wastage (more for random slabs).
- Confirm thickness tolerance, delivery timeline, freight and unloading responsibility.
