How To Repair Undermount Sink

Learn how to install an undermount sink with this adept DIY guide, which provides labeled diagrams and in-depth step by stride instructions.

Bathroom and kitchen sinks that mount to the underside of the countertop are popular because they don't intrude on the counter, making information technology easy to wipe the surface make clean.

bathroom surfaces tile counter and backsplash — An undermount bathroom sink doesn't interrupt the smooth surface of this tile countertop.

In terms of appearance, the absence of a sink rim or visible fasteners also provides a minimalist, contemporary look.

contemporary bathroom stone floor glass shower — Two square undermount sinks recess beneath a composite countertop in this contemporary master bath. Breadmaker / Shutterstock.com

The downside of this type of sink is that the hole in the countertop must be cut and finished with perfection considering it is completely visible. With a rimmed countertop sink, the rim hides balmy irregularities of the hole.

Many bathroom sink manufacturers offering countertops that are pre-fitted for a sink, where the hole is precut and finished. Unless yous are very experienced at cutting a perfectly-shaped hole in your countertop material, ownership a countertop with a precut hole is the fashion to go.

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Or you tin have a pro cut it—but if you do this, just accept the pro do the entire chore.

In this article, we will show you how to fasten this type of sink to the underside of a countertop.

Notation that i of these sinks can be installed on the underside of mosts types of countertops, from cultured marble to composites. The main requirement is that the surface of the countertop'southward underside must be apartment.

In that location are a couple of ways to fasten an undermount sink in identify below the hole.

For a kitchen sink in a large countertop or situations where the countertop is non easy to remove and turn upside downwardly, you tin can attach the sink to the underside of the countertop with silicone adhesive. To hold the sink in identify while the silicone adhesive dries, you lot tin can utilize a 1/2-inch threaded rod and 2 by 4s assembly as shown in this quick video:

Access is easiest if yous can remove the countertop from the chiffonier, and and so install the sink onto the underside of the upside-down countertop, as shown in the photographs below. This mostly works with a new, pocket-sized countertop.

Note that the manufacturer of this sink-and-countertop combination includes special clips that reinforce the silicone adhesive. Methods vary. The best installation method is often specified by the sink manufacturer, and then be sure to read any instructions that come up with the sink.

ane. Turn the countertop upside downwards and apply a modest bead of silicone adhesive around the bowl's border. Position the clips.

While the cabinet is upside downwards, install the faucet and drain assembly.

Man applying caulk to edge of a new sink bowl. — Utilise silicone adhesive to the pinnacle edge of the bowl.

Utilise silicone adhesive to the pinnacle edge of the bowl.

ii. Position the basin in identify over the hole and secure information technology with the clips and screws provided. Apply toilet paper to remove any excess adhesive.