Sinks are heavy. 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.
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.
Cons of an Undermount Sink
Buildup around the sealant: Some undermounts have sink edges sealed with silicone caulk. This caulk sealant protects the area from water damage or leaking, but it can also cause buildup of gunk and other food debris unless you clean it regularly and replace it every five years.
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.
Undermount Sinks Make Cleaning Easy
Of the kitchen sink options, undermount sinks are a perfect choice to keep the home clean. Because they are caulked or clipped directly to the vanity or counter space, there is no gap underneath the sink.
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.
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.
They Give You More Counter Space
Instead of giving up a little extra space for an edge, you only lose the space the sink takes up. And, thanks to this extra space, a sleek look, and rising popularity, an undermount sink can also increase the resale value of your home.
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.
Undermount sinks are not much more expensive than other varieties of sinks, but the installation can cost more. For budget undermount sink options, choose a smaller size and a material like acrylic, stainless steel, a composite stone, or porcelain. These sinks are lighter than natural stone and more budget conscious.
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.
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 stronger the silicone bond, the harder it would be to remove the sink without causing your granite countertop some damage. While old silicone bonding can be removed using a knife, there are certain spaces that won't allow you to do this without actually lifting the granite countertop.
'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.
Almost all of the undermount sinks I plumb include a disposal. A properly installed sink will have no problem supporting a disposal.
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.
Most undermount sinks come with clips to attach them to the underside of your countertop. However, you don't have to use clips for all undermount kitchen or bathroom sink installations. You can also use brackets or the two-part epoxy. You can also use a combination of attachment methods for a more secure hold.
Each sink is sized to work with existing countertops and faucets, so no special sizing is required.
Advantages of Installing an Under-Mount Sink
Because the sink is installed underneath the countertop, it creates a seamless look that is both stylish and functional. There is no lip or rim around the edge of the sink, which makes it easier to wipe down and keep clean.
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.
Undermount sinks are a beautiful accent to Riverstone Quartz™ and Corinthian™ Solid Surface countertops. Proper installation will help to ensure long-lasting beauty and durability.