Pool Terraces in Edgartown, Massachusetts.

The coping is the one line everyone reads, from the water and from the house. We set it dead level to the shell with consistent overhang, and choose thermal bluestone or granite for grip underfoot — matched to the white Federal captains’ houses and shingled coastal estates of Edgartown so the pool reads as part of the garden, not a hole cut into it.

Seat walls, steps, and planting beds get designed into the surround from the start, whether the property sits in Edgartown Village, Katama, and Chappaquiddick or anywhere else in town.

Stone varies wildly pallet to pallet, so we select it ourselves. In Edgartown, where the local character runs to white Federal captains’ houses and shingled coastal estates, getting the color and cleft right matters more than the grade printed on the invoice.

Edgartown sits in Dukes County, and most weeks we are somewhere in this pocket of Martha’s Vineyard — which means shorter travel, faster site visits, and a crew that already knows how ground behaves around here.

A pool surround is the hardest-working stone on a Edgartown property — wet feet, furniture, chlorine, and a New England freeze-thaw cycle all at once. Because the land here is sandy outwash, fast draining and easily undermined without a confined base, we excavate to depth and confine a compacted base under the whole terrace, then pitch it so water runs away from the pool shell and the house.

That base is why the coping stays true and the joints stay tight. Pool decks almost always fail at the edges, where backfill settles and nobody confined the base — on a harbor village on an outwash plain running south to Katama, that is exactly where we spend the extra day.

Most Edgartown homeowners are more worried about the disruption than the stone, and they are right to be. We stage material where it will not kill the lawn, protect the drive and the root zones, and sweep the site at the end of every working day.