About Kitchen Sinks Undermount

Undermount sinks are a popular upgrade in kitchen remodels, particularly with natural stone counters where the beautifully grained and polished edge can show above the sink bowls. Pressed to the bottom of the counter rather than sitting on top of it, these sinks have a lower, sleeker profile than traditional overmount models. Though the undermount sink is a modern design, it can be purchased in a variety of styles and materials to suit antique, French country, farmer and Shaker-style kitchens.

Installation

Undermount sinks are typically adhered to the bottom of the kitchen counter with an adhesive gasket or strong epoxy. And additional bead of silicone sealant is applied where the sink and counter connect. Clips are anchored to the underside of the counter with screws or epoxy, and then clamped to the sink edge for added support. Heavier sinks, such as cast iron, require support from the base of the cabinet to keep them in place.

Benefits

Undermount sinks are a low-profile enhancement to the kitchen, allowing for the clearest view of the expanse of countertop. Under-counter sinks are most often used with high-end countertops to preserve the visual flow of the granite or marble patterns.
Kitchen cleanup is easier with undermount sinks, allowing you to wipe down the counters and drag any crumbs directly into the sink. There's no sink lip to catch debris or collect moisture, helping to keep the surface of the counters free of hard water stains, discoloration, mildew or dirt buildup.

Styles

Undermount sinks are available as standard kitchen sinks and as entertainment sinks that can be placed in an island or second counter area for use as a food-prep station. Undermount utility sinks can be used in butler's pantries, mud rooms and laundry areas. Undermount sinks can have faucets mounted on a ledge that sits inside the sink edge, or can be made separately from fixtures that are set into the counter. They can also be constructed with built-in cutting boards or drainboard areas.
Under-counter sinks are made in single-, double- and triple-bowl styles, in a variety of materials and colors. The standard square or rectangular sinks are the easiest to install, but a variety of partially-rounded, oval, circular and custom shapes are also available. Apron-front (farmer-sink) styles require a different cabinet style or modifications to existing cabinetry, but they also can be mounted under the counter.
Select a gloss, matte or patina finish to suit the style of your kitchen. Apron-front undermount sinks can have sculpted or painted designs on the visible front of the tub.

Materials

Standard sink materials, such as stainless steel and cast iron (coated with an enamel finish), offer the widest array of options in undermount styles. More expensive metal options include copper, brass and titanium. Undermount sinks can also be made with natural stone and clay products such as granite, soapstone, vitreous china and porcelain. Choose fireclay for sinks with sculpted patterns. Acrylic sinks offer the lightest weight and easiest installation under the counter.

Considerations

Use undermount sinks only with compatible countertops. Natural stone is the preferred choice for use with under-counter sinks. Formica leaves an unattractive unfinished edge and is prone to water damage, unless a specifically designed seal is used during installation. Tiled countertops have similar problems, but some undermount sink styles are specially made to be tiled-in.
Undermount sinks are more challenging to install, and therefore more costly. Improper installation can lead to leaks, breakaways and severe damage to existing cabinetry, however, so hiring a professional offers the safest option for installation.
Not all cabinets can accommodate all undermount sinks. Check the specifications and dimensions of an undermount sink and compare with your new or existing cabinetry before purchasing.
Common materials such as stainless steel and cast iron offer the easiest maintenance for undermount sinks. Sink materials such as copper and vitreous china require special cleaning products and careful upkeep. Read all manufacturer's care instructions before deciding on the best undermount sink for your lifestyle.
Choose a sink finish and style to suit the design of your kitchen. Angular, shiny, metal undermount sinks work well in a modern setting. Fireclay and copper under-counter sinks in apron styles enhance the look of a country kitchen.