How to Install Drop in Sink on Granite Countertop | Expert Guide


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Your house reflects your personality, which is why you need to pay special attention to make it attractive. Well, all the parts of a home, the kitchen holds the central point of engagement. A beautiful kitchen makes cooking fun and gives out a positive impression about your personality. The kitchen fixtures play an essential role in making it look gorgeous. For example, the drop-in sinks are the most commonly used these days. So, if you also want one in your kitchen, keep reading as you will know how to install a drop-in sink on a granite countertop. 

You’ll be able to do it yourself by the conclusion of this conversation. By doing this, you may enjoy your kitchen’s fashionable decor while staying within your budget. Additionally, you will appreciate the comfort and convenience of your drop-in sink when cleaning the dishes. Before anything else, it’s important to understand what a drop-in sink is and how it differs from other kinds of sinks. Yes, as the name suggests, the sink is fixed under the countertop rather than running parallel to it.

Let’s now examine how a kitchen sink may be mounted on a fresh countertop.

How to Install Drop-in Sink on Granite Countertop

Step 1:

Well, before you start the procedure, you need to keep some tools ready at your arm’s length to make it easy for you along the way. 

  • Drop-in Sink
  • Drop-in sink clips for granite
  • Drilling machine
  • Screwdriver
  • Silicone gel or sealant

Step 2:

Next, we will carry on to one of the most critical steps. Yes, it is the measurements that make the project successful. Even if one of the sizes goes wrong, you will not have the required results. So, it would help if you were extra careful here. 

Start measuring from the sink opening in the granite countertop in your kitchen. The whole standard measurement of the sink is 33inches x 22inches. But make sure that you measure just around the rims of the sinkhole. Note down the facts and take them along with you when you go to the local vendor to buy the sink. 

How to Install Drop in Sink on Granite Countertop
Step 3:

Now is the next while installing or changing the sink in the granite countertop, you will check the design of your drop-in sink. You will find different types of drop-in sinks available on the market, depending upon the extent of “reveal” of the sink. You can choose the color scheme of your kitchen according to your desire and your liking. For your information, here are the most commonly used classifications of the various reveal sinks. 

  • Positive Reveal (A small part of the sink appears above the countertop
  • Zero Reveal (The edge of the countertop are in line with the rim of the sink)
  • Negative Reveal (The sink is wholly fitted within the sink walls and countertop)

You may choose according to your requirement, but most people go for the zero reveal the design. The reason being it gives out a stylish outlook to your kitchen. Besides, it is much easier to clean and wash the countertop. Since the grease and dirt may get into the nooks and corners, you need to have something which works well and be convenient for you. 

how to install drop-in bathroom sink on granite countertop
Step 4:

Now you will go ahead with the process as follows:

  • Align the sink as you have decided to go for the zero reveal, positive reveal, or a negative reveal. Installing under-mount sinks is not a very difficult task if you have accurate measurements with you. 
  • Use those measurements and mark the points where you have to drill the holes. Again, it would help if you were very accurate; otherwise, your countertop with the kitchen sink will not come out as desired.
  • Now take the sink away to drill the holes with the drilling machine where you marked them.
  • Lastly, clean the ridge with a cleaning agent and leave it for a while until it dries. 

Step 5:

Now you will be installing an under-mount sink in its place, but first, it needs some sealant or silicon glue to hold it there, right? Well, for that purpose:

You will first apply the sticking agent (silicon glue or any other sealant) carefully at the edges. Make sure that you put a plentiful amount so that it is enough to hold the sink.

Bear in mind that you have to use clear or transparent waterproofing to give your counters a neat look with sinks. 

install drop-in sink without clips
Step 6:

Now you will use the wingnuts to fit in the drilled holes. Make sure that you tighten the screws properly to secure the sink in place. Once you have come this far, you have to give it few days before you finally install your drop-in sink in the granite countertop.

how to install undermount sink to granite countertop

Step 7:

Next, you need to keep an eye on the instructions of the manufacturer of your sink. Yes, please keep the manual right in front and go ahead with the following steps:

  • Fix your drop-in sink with the plumbing fixture under the countertop; it is mostly under the cabinet. 
  • Do not forget to apply the caulking to make a waterproof sealing. This caulking will prevent leakage in the future. 
Step 8:

Now you will make sure that there is no air between the spaces around the sink’s edge and the countertop. For that matter, you will press the sink from the upper side to make it sit firmly. 

drop-in sink installation on quartz countertop

Step 9:

You will clean the edges with a clean cloth to remove all the extra bits of caulking and sealant between the surfaces in the last step. 

Advantages of Having a Drop-in Sink

Well, once you have installed the sink in your kitchen countertop, let us have a look at the benefits you will now enjoy:


It is easy to maintain a drop-in sink as you do not have to dispose of the waste by carrying it. You can wipe your granite countertop off with a wet cloth and put it straight in the sink. Secondly, as the under-mount sinks are mostly deeper than the regular ones, they give you extra space and an element of comfort while washing your dishes. Yes, you do not have to worry about the splashing and the mess all around the sink. 


Besides convenience, the drop-in sinks, especially in a granite countertop, look chic and modern. It exudes sheer elegance as the overall look is neat and clean compared to the sinks’ typical style. 

How to Maintain Drop-in Sink

After you have got the answer to installing a drop-in sink on a granite countertop, you must be thinking about the maintenance of the sink. Well, here we are with quick tips for you:

changing sink in granite countertop


Make sure that the waterproofing works for longer. What you can do for that is that you will opt for the best quality sealant to fill in the gaps between the edge of the sink and the countertop.

Refilling of the gaps

To sustain your under-mount sink for long, you have to take care of the fact that you refill the gaps after every 4 to 5 years. 


Last but not least, you need to retain the surroundings clean. If the dirt deposits around the sink’s rim, the sealant might get weak and scratch away. So, it is essential to keep the general hygiene and cleanliness.

How to Install Drop-in Sink on Granite Countertop: FAQ Section

Can you put a drop-in sink on granite?

Yes, we can install a drop-in sink on a granite countertop. It is an easy way if you follow the instructions carefully. You can do it yourself without a plumber’s help.

Can you change a sink in a granite countertop?

Yes, we can change the sink, too, whether it is a marble countertop or a granite countertop. All we have to do is know what and how to do it; the rest is easy. 

How do you replace an under-mount sink without removing a countertop?

Well, it involves some critical steps, which you need to follow, if you want to replace an under-mount sink without removing your countertop. You have to be accurate and careful, and you can do it at home yourself. 


To conclude this topic, as you know now how to install a drop-in sink on a granite countertop, you can do it all by yourself. The drop-in sinks go well with all sorts of countertops. Whether you have a marble or a granite countertop, you can easily enjoy the perks of having a drop-in sink. The next time you need to change or install the under-mount sink, you do not need to call a plumber or a technician. Instead, you will follow easy steps, and you will be able to do it yourself. However, you have to be very specific about the measurements and sealing the surfaces properly. Otherwise, it might create problems for you in the future. 

Read More: How to Install a Farmhouse Sink in Existing Cabinets

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