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.
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.
While undermount sinks are currently preferred for looks, overmount can be a better investment in longevity for certain countertop materials like wood.
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 But drop-in sinks do not have much in the way of resale value and are aesthetically outdated.
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.
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.
Pros of a Drop-In Sink
Drop-in or “top mount” sinks are more common than undermount options and can save costs on materials and installation. Drop-in sinks are: Budget-friendly: Drop-in models are typically more affordable than undermount sink options.
Drop-in sinks are a popular choice for do-it-yourself homeowners because they are relatively easy to install and can be used with a variety of countertop materials. They are also typically less expensive than undermount sinks.
When you have a negative reveal, a portion of the countertop underside is exposed to splashing water. When you use a porous material, water can seep through and the sink area can become a breeding ground for mold.
Marble and granite
In this case, they are ideal for undermount sinks because they also happen to be durable. The fact that they are porous also helps in helping the adhesives bind more firmly with the stones. Despite what most people think, marble is not a “soft” stone.
'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.
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 rim of a drop-in sink is noticeable, meaning there is less counter space in contrast to undermount sinks. Generally, drop-in sinks have more inexpensive options in comparison to undermount sinks. The undermount sink is the more expensive alternative and will also cost more install.
Personal space.
With two sinks, theoretically no one will ever again spit toothpaste on your hand as you're trying to wash up. Also, your very own sink means you can keep your makeup, moisturizers or shaving kit out as necessary without having your partner knock anything over.
Although drop-in sinks are built to help carry their own weight, they are still heavy sinks. And, because they rest on top of the counter, they require durable, hard, and heavy countertops to support them.
There is a visible rim or lip on the perimeter of the basin that rests just over the cut-out for the sink. Drop-in sinks are supported by this lip and a series of hidden clips that attach to the underside of the countertop.
Birchfield agrees, pointing out that fireclay and granite selections have been on the rise as they offer more warmth or a sense of nostalgia to the kitchen space. "White fireclay apron front sinks have been on the rise offering a charming statement piece.
Quartz Composite
Best for: High durability, heat-resistance, and sound dampening. If the vulnerabilities of solid surface acrylic resin or enameled kitchen sinks are concerning, then a quartz composite kitchen sink is a great option.
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.
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.
Pro: An undermount sink is easier to clean
There's no accumulation of dirt or crumbs, unlike with traditional sinks where you can get obstructed by the rim. Over time, the lip around a sink can collect so much debris that it becomes both an appearance and cleanliness issue.