A drip rail is a fancy piece of cover-up molding put below a farm sink to finish the cabinet edge.
Often there is much ado about a drip rail when a panel front farm sink has a decorative front. Instead of being smooth and plain, the front of the sink has a raised border that mimics the style of cabinet doors. Sometimes the sink sits flush with the face of the cabinet — as this one does. Others must sit slightly forward. But in either case, the sink sits directly on a sink base which has been cut out to fit the bottom. That leaves a raw edge below the sink. Enter the sink rail which is basically a piece of decorative molding. British kitchen designer Christopher Peacock made the dark drip rails a signature feature. He also used one in the Lavender Subway Tile Kitchen. In theory the rail will keep water from streaming down to the sink cabinet below. Plus, a sink rail is a great decorative detail and an easy one to copy. There’s no rule that the drip rail must be dark stained and contrasting, though Peacock’s often are. It can match the cabinets.
This sink is mounted under a marble counter with a sculpted ogee edge. Note that the top of the sink sits just below the bottom of the counter and the sink has a pronounced lip that finishes the top architecturally. Because this sink is so thick all around it has a positive reveal — the marble counters are pulled back slightly to expose the top rim of the sink as well as the ogee edge of the counter. It’s still a practical way to install the sink since it permits the flow of water easily from the counter into the basin. Another feature I like here is the integral backsplash. A rectangle of marble that matches the counter sits over the subway tile backsplash. And a hook-spout bridge faucet is mounted on the marble. This is a very workable solution when there isn’t a great deal of space at the back of the sink or if a deck mounted faucet is not preferred.
Peacock sometimes calls this a “scullery” style sink since it has a backsplash that matches the white marble and a wall-mounted faucet. But to my mind, a true scullery sink is much larger and akin to a sink dedicated to cleaning large pots an pans. But, of course, terms are no longer strictly applied in kitchens today.