What is precast terrazzo?

Precast terrazzo is a panel made in a factory: aggregate and cement are mixed, pressed, cured under pressure, then ground and polished. It arrives as a finished panel of consistent thickness, which is why it is specified for large floors and for anything that has to pass a fire rating.

Layer detail. Thicknesses are published ranges, not our measured figures.

Reference photograph of a terrazzo surface, s09. Not a photograph of our goods. — A precast panel: pressed, cured, ground. The chips sit at the depth they were pressed to.

Reference photograph of a terrazzo surface, s39. Not a photograph of our goods. — Large format precast. The thickness does not vary across the panel, which is why it is specified for floors.

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

Property	Published range	Measured by us
Body thickness	20-30 mm	not tested
Water absorption	commonly below 0.6%	not tested
Flexural strength	process dependent	not tested
Fire rating	can reach A1 depending on formulation	not tested

Why the processes are not interchangeable

Two things come from pressing under pressure rather than trowelling wet: the panel leaves the mould with a consistent thickness, and the surface can be ground flat later to a tolerance no site-applied floor reaches. The first is why a precast floor over a large span does not vary the way a poured one does.

What these figures are, and what they are not

Every figure in the right-hand column reads "not tested" because we have not tested a precast panel. The left column is published range, not our data. When we hold a report it will appear on /download/ with the method and the date on it.

Measured data sheets and test reports

If you are specifying this

These are the forms we actually supply for this question, with production photographs where we have them:

Send a specification Ask for a sample