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Our slate front walkway was in need of an update. The 2′ x 3′ slate flagstones had cracked in places and had shifted over the years, allowing weeds to invade. Fortunately, the stones were not mortared in so we were able to do this update on our own and much more quickly than I thought! I measured the area of the total walkway and the area that the flagstones would cover to calculate the amount of paver base and pea gravel we’d need. First thing in the morning, we picked up our suppli…