Since undermount sinks to not have anything above the counter to help carry their weight, they need more support. They also need more solid countertops that don't suffer easily from water damage. This often makes them a more expensive sink than other options and also makes installation more difficult.
Undermount sinks are often a no-brainer decision when remodeling a kitchen. There's lots to love: they look nice, let you to wipe water and crumbs directly from the counter into the sink with a single swipe, and they eliminate that gunk-magnet seam around the lip of overmount sinks.
Undermount sinks are a popular choice for many homeowners because they offer a sleek, seamless look that is easy to keep clean. Because there is no lip around the edge of the sink, it is easier to wipe debris directly into the sink, rather than having to clean around the rim of the sink.
Some say drop-in is generally the best option because it's easier to access all parts of the sink for cleaning. However, both types of sinks tend to accumulate grime along the caulk line where the sink meets the counter. Where an undermount sink rim and counter meet, the caulked gap can be trickier to clean.
Overall, which is better: Undermount or Drop-in Sinks? In general, which sink type is best for you will come down to preference. Drop-in sinks represent a sink type that is affordable, flexible, and easy to install. But drop-in sinks do not have much in the way of resale value and are aesthetically outdated.
An undermount kitchen sink is easier to clean. Since your countertops are below your sink, there will be little need for scrubbing them. You will also have less counter space, so cleaning will take less time. With less counter space, you will also have less waste from pans and pots.
Con: You Need a Specific Type of Countertop
Because an undermount sink requires a lot of strength, it doesn't work well with all types of countertops. If your countertop is quite old, it is probably made of laminate or tile.
Many undermount sink types are attached to the countertop with silicone sealant and metal clips. Use a utility knife to cut through the silicone, then unscrew the clips. Removing and installing an undermount sink is a two-person job.
'The easiest kitchen sink material to maintain is going to be one made of stainless steel, copper, cast iron or enamel because they will not support microbial growth as they are not cellulose material,' says Darren Hudema, director of training and technical services at PuroClean.
Weight: Stainless steel or copper sinks tend to be the lightest, while vitreous china, porcelain, ceramic and composites are moderately heavy. Choose a heavy stone, cast iron or enameled-steel undermount sink only if you're sure the countertop can support the weight.
Moldy or Cracked Caulk: Just like topmount sinks, undermount sinks on granite and quartz need to be sealed to prevent moisture from creating mold and mildew problems in the cabinet.
Undermount sinks also remain popular, with Beesley sharing that they're “a popular choice for customers as they are installed under the level of the worktop creating a seamless design. These types of sinks save space, and create a clean and sleek look which is great for minimalist-style kitchens.”
The lack of a visible lip with an undermount sink makes it quite a bit easier to clean your counters; you can sweep any debris from your counters right into the sink. However, top mount sinks are the simplest of the two types of sink to keep clean themselves.
An undermount sink is just like the name sounds – a sink that fits underneath your countertops. This sink has many benefits compared to other options and makes task work in your kitchen much easier. Undermount sinks work best when they are installed in conjunction with natural stone countertops, like granite.
In proper undermount sink installation with epoxy, clips and brackets, there's usually no need for additional support. The attachment methods should securely support the weight of the sink, both empty and with water and dishes in it.
The oval sink is also the most practical sink shapes amongst undermount sinks. The oval shape allows the sink to be wide without having to take as much space on your counter as the rectangular sinks. In addition, the vast majority of oval bowls swoops down which allows for better drainage than the flat bottom sinks.
Almost all of the undermount sinks I plumb include a disposal. A properly installed sink will have no problem supporting a disposal.
Proper Sink Installation
Then, form an initial seal by applying an adhesive (usually a two-part epoxy but sometimes silicone) to the sink before attaching it to the underside of the counter. Then seal the gap with silicone caulk. Look for mold-free or mildew-resistant caulk designed for kitchens and baths.
Timeless: Think farmhouse sinks in porcelain, soapstone sinks (integrated into the counter, or not), and surprisingly, concrete (subtle colors akin to soapstone or slate). Copper is a timeless material for pantries and bars.
Double Basin/Bowl Sink
The most popular type of kitchen sink arrangement, dual basins allow for washing on one side and rinsing or drying on the other side.
Stainless Steel Sinks for Granite Countertops
Stainless steel is incredibly popular for sinks because it: Looks great with granite. Resists chipping and cracking. Gives a modern look to the kitchen even in a farmhouse style.