NEWS ARTICLE ARCHIVESItalian Porphyry stone surfacesPorphyry stone is an effusive volcanic rock and comes naturally subdivided in parallel slabs. The structure allows to obtain, with little processing (splitting/transport) and use of water, a finished product that is sustainable and has limited greenhouse impact. Cobblestones and tiles vary in thickness (from 40/60 to 160/180mm). The size and shape allows the traditional installation on a fry mix of washed sand and 3mm crushed basalt. The paved surface is then compacted while filling the joints with fine sand and water creating a permeable substrate. |