Hi. I specified Silca System for an extensive deck in 2017 +/-. The results exceeded my expectations. You feel like you're on a patio, not a deck. The M&L cost of system & stone was the equivalent of reinstalling ipe decking. Its life-cycle cost will be much lower than ipe. A lesson learned: purchase stones with smooth straight edges or seeing the light come thru joints will be disconcerting. The stones had to be re-edged on site.