Sinks Installation Guides

The drain assembly is where most sink leaks happen, and it's usually because someone either skipped the plumber's putty or overtightened a slip joint. Whether you're setting up a single bowl with a disposal, a double bowl with one side disposal, or a straightforward drain without a disposal, the principles are the same: putty the flanges, hand-tighten the slip joints, and make sure every connection slopes toward the wall drain.

Drop-in sinks are the easiest sink type to install. The rim sits on top of the countertop, so gravity and a bead of caulk do most of the work. No clips, no adhesive curing overnight, no brace from below. If your existing sink is a drop-in and the new one fits the same cutout, you can swap it in about an hour. Even cutting a new hole in laminate or butcher block is manageable with a jigsaw.

A farmhouse sink doesn't drop into a standard cabinet like a regular sink. The front apron extends past the cabinet face, and the sink itself is usually deeper and heavier than a standard kitchen sink. That means the cabinet needs modifications: the face frame needs to be cut, the floor of the cabinet needs reinforcement, and the countertop cutout is different. This is mostly carpentry work, and it needs to be precise because the sink weight (a fireclay farmhouse sink can weigh 80-120 pounds) rests on the cabinet, not on the countertop.

Undermount sinks look clean and modern -- no rim sitting on top of the counter. But the install is trickier than a drop-in because the sink hangs from below the countertop, held in place by clips, brackets, or adhesive. The countertop cutout has to be precise, and the mounting has to be rock-solid because a sink full of water and dishes is heavy. Most undermount installs happen when the countertop is being fabricated, but replacements and retrofits are doable with the right approach.