Irregular porphyry slabs – slab material

Irregular slabs also known as porphyry slab, opus incerta, mosaic, palladiana are used for outdoor paving (courtyards, sidewalks, driveways, gardens) and cladding (road and building walls, terraces, etc.). the surface is natural quarry plane. For indoor paving, it can also be laid with semi-gloss or glossy surface. Slabstone consists of irregularly shaped porphyry slabs distinguished into various types according to their thickness and size:

- Normal type (driveway with light traffic)
- Thin type (pedestrian pavements)
- Giant type (driveway)
- Thin giant type (pavements with light traffic)

Technical data table irregular slabs - crazy paving

Trade nameTrentino porphyry
ColorRed, gray, red violet and rust or mixtures
ProcessingObtained by flaking stratified material with natural quarry plane, in varying thicknesses, in irregular polygonal shape
TYPE (mm)THICKNESS (mm)WEIGHT
(KG/m2)
POSSIBLE USEUSEFUL THICKNESSES FOR LAYING
(mm)
Thin irregular slabs10 to 3060 to 70pedestrian
(cladding)
60 to 70
Irregular normal slabs20 to 5085 to 90pedestrian
(cladding)
private vehicular
90 to 100
Giant irregular slabs
(thin type)
20 to 4070 to 80pedestrian
(cladding)
private vehicular
90 to 100
Giant irregular slabs30 to 70100 to 110pedestrian
(cladding)
private vehicular
light vehicular
100 to 120
Wall "Plotte"110 to 180about 350(coating) 250 to 300

For other formats designed for outdoor flooring, you can also check out the pages dedicated to porphyry pavers and porphyry tiles, or learn more about installing porphyry.

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Tell us about the type of flooring or wall covering, the installation setting, and its intended use: we’ll help you identify the most suitable type of slab.