10 slabs = 5.4sqm coverage approx 6 sqm when laid and jointed. 15 slabs = 8.1sqm coverage approx 9 sqm when laid and jointed. 20 slabs = 10.8sqm coverage approx 11.5 sqm when laid and jointed. 25 slabs = 13.5sqm coverage approx 14 sqm when laid and jointed.
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