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Answers / Numbers

What is the weight of a Coffee Wood Marble floor compared to a timber floor?

Substantially heavier. A 20 millimetre marble slab at 2.70 grams per cubic centimetre is about 54 kilograms per square metre, before the adhesive or the bedding, against roughly 15 to 20 for a timber floor of the same build-up.
A large polished grey-brown marble slab standing on edge behind a black metal frame of about a metre in height
A slab standing against a one-metre frame.
Marble slabs standing upright on wooden frames inside the open back of a shipping container, strapped and ready to load
Slabs loaded for shipment, which is how a container is weighed against the manifest.

Reference photographs. They show the material and the finish; they are not photographs of goods we made, and the colour on screen is not a colour-match.

The figures, and where each one comes from

The floor Weight per square metre
Coffee Wood Marble, 20 mm slab about 54 kg, before bedding
Coffee Wood Marble, 18 mm slab about 49 kg, before bedding
Timber floor on joists Much less, and it is carried by the frame rather than by the slab
What it decides The structure, the lifting and the fixing

Why it behaves the way it does

Stone is a structural material and timber is a finish, and that difference is the reason a stone floor needs a flat base that can carry it while a timber floor needs a frame that can carry it. It is also the reason a stone floor cannot be fitted to an existing soft floor.

What these figures are, and what they are not

The weights are calculated from the density this stone is published at. They do not include the bedding, the adhesive or the finish, and a specific floor's build-up is the engineer's figure.

If you are specifying this

We have not published products against this question yet. Send us the process, thickness and quantity and we will quote it against what we can actually form, rather than against a catalogue.

Send a specification Ask for a sample

Substantially heavier. A 20 millimetre marble slab at 2.70 grams per cubic centimetre is about 54 kilograms per square metre, before the adhesive or the bedding, against roughly 15 to 20 for a timber floor of the same build-up.

The figures

The floor Weight per square metre
Coffee Wood Marble, 20 mm slab about 54 kg, before bedding
Coffee Wood Marble, 18 mm slab about 49 kg, before bedding
Timber floor on joists Much less, and it is carried by the frame rather than by the slab
What it decides The structure, the lifting and the fixing

Why

Stone is a structural material and timber is a finish, and that difference is the reason a stone floor needs a flat base that can carry it while a timber floor needs a frame that can carry it. It is also the reason a stone floor cannot be fitted to an existing soft floor.

What these figures are, and what they are not

The weights are calculated from the density this stone is published at. They do not include the bedding, the adhesive or the finish, and a specific floor’s build-up is the engineer’s figure.

Where this applies on this site