Silicone Caulk for Kitchen Sink – With A Complete Guide

Silicone Caulk for Kitchen Sink

Kitchen cabinets, sinks, baths- these are the tools constantly exposed to water, hence getting damaged and mildewed. Damp feelings! Isn’t it?

Indeed, there are available products to eliminate this dampness, such as varieties of putties, caulks, and sealants. But if we talk about silicone among them, undoubtedly it’s the best one.

To protect your sink from water damage and mold, you should seal its rim with a good bead of silicone caulk. But what types of caulk do you need? Which brand? Why won’t you go for others? – These all are the questions that make a buyer confused, suitable? We think so!

Hopefully, this article will disclose all your confusion about using silicone caulk for kitchen sink and help you get proper guidance.

What Kind of Caulk to Use For The Sink?

Indeed, it’s challenging to know which type of caulk or sealant would be the right one while plenty of products are available there claiming to be the best for specific applications.

Well, in that case, you need to point out the problems according to your project. For example, your project may need a specific temperature range or water-resistant ability and reliability. These attributes would help you to find out the desirable types of caulk.

Let’s see what the troubles your sink generally faces are.

  • It remains wet most of the time
  • Water builds up around it
  • Water leads to soap scum and molds on the rim.

So, to troubleshoot these problems, you need a caulk that would be

  • waterproof
  • Repels moisture
  • Resistant to mold and mildew
  • Have good adhesive properties
  • Designed for resilient flexibility

Now it’s time to disclose the desirable caulk or sealant that can provide all the above attributes. Here, the pure 100% silicone caulk is the most recommended one and the best solution.

Depending on your sink type (drop-in or undermount), you need to choose the caulk as well.

However, if you are looking for protection against water damage and mold growth, saving energy, 100% silicone is an excellent choice.

Is It Better to Use Silicone or Plumbers Putty?

Plumbers putty and silicone caulk are the most commonly used products in sealing leakage and plumbing. Also, both of these are good enough for this job.

Nonetheless, we would recommend you use silicone instead of plumbers for dealing with the disrupting sink.

You are wondering – why is that?

Well, here are some issues why you should use silicone caulk in particular applications-

  • Plumber’s putty doesn’t give adhesive strength, and it remains soft while silicone forms in a hard texture. So, if you require a strong bond for your project, you should avoid putty.
  • Silicone adhesive can be used in a large number of applications and also in more significant projects. On the other hand, a plumber’s putties are suitable for sealing a small area.
  • Both of these products are waterproof and intact. These are built to resist water, right? Of course. But, for its rigidity and strength, silicone can deal with heavy water pressure and last longer.
  • The plumber’s putty doesn’t seal the space between the wall and the sink.
  • Silicone caulks come in a variety of colours, from clear to 23 different light shades. Unfortunately, as the patties aren’t visible after applying, you can’t use them in exposed areas.

Of course, a plumber is more durable than silicone, and it keeps its elasticity. And the maintenance of this product is more accessible than the silicones’.

But if we talk about the rigidity, resistant capacity, and multi-purpose application, you know, it’s silicone caulk – the best solution.

Maintenances of Silicone Caulk

As silicone is a sticky material and becomes hard after drying, you should maintain it in a relatively tricky way. For example, you need extra tools or techniques for a clean outcome while applying or removing the product.

Let’s see what tools and techniques you need to apply while dealing with this adhesive. Shall we?

Removing the Old Caulks

What you will Need-

  • Flat razor blade/putty knife
  • Angled blade
  • Paper towel and rubbing alcohol

What you will Do-

  • Position the knife to the bottom of the old caulk and slice it slowly.
  • You should keep the knife flat so that it won’t scratch the sink base.
  • While scraping, don’t go too deep. Try to keep it 1/8 to 1/4 inch into the gap.
  • Use an angle of the knife to cut the caulk from the sink downward as well.
  • Alternate between the flat razor and angled blade to remove as much of the old caulk as possible.
  • Use the same technique to remove the old caulk from all around the sink.
  • Also, you can use a caulk remover around the rim in case it seems so hard.
  • After removing the caulk, clean the area with a paper towel soaked in rubbing alcohol. It will make your surface ready to get the new caulk.

Lastly, leave it to air dry altogether before starting the further application.

Applying New Silicone Caulk

What You Will Need

  • Painter’s Tape
  • Knife
  • Caulk gun

What you will Do –

How To Caulk A Kitchen Sink

Use the painter’s Tape on the countertop leaving a little space to the gap. Make sure that the gap is visible and accessible.

You can tape both to the countertop and the side of the sink to get the best finishing result. Be careful while taping the corners; it should be the shape of the sink.

Cut the caulk nozzle with a knife at a 45° angle close to the tip so the tube fits tightly against the rim.

Don’t cut the caulk tube too large as it will make the caulk come out too much at once. Instead, insert the caulk tip into a sealant gun and test its flow on a Scarp material.

Point the tip of the tube into the space between the sink edge. Squeeze the caulking tube gently but firmly, pulling the tube toward you. Maintain the smooth continuous motion with a steady flow to create a smooth layer.

While it comes to smoothing the layer, you can use a flat smoother like a silicon tool to get a perfect finish.

Well, in this case, you are using painter’s tape for the same purpose; then would you need a smoother again? We don’t think so! Let your finger do this job!

While the caulk is still wet, pull the tape off the sink. You should see a clean and straight line of silicone caulk all around your sink.

Avoid applying water to the sealant until it’s scorched. Here’s to mention that different caulks come with a different range of drying time; you will find it in the manufacturer’s instructions.

That’s it! Your sink is now safe with silicone and ready to go.

“Any Type of Silicone is Perfect For a Sink”; is it??

Indeed there are hundreds of caulks and sealants claiming the best position for different applications. However, even most of them can’t do anything but make you confused. Right?

No worries! We have researched some of the most rated and popular silicone caulk available on the market and found such an excellent outcome. Here are the products; hopefully, these will not disappoint you.

 The Best Silicone Caulk for Your Kitchen Backsplash?

DAP 100% Silicone Kitchen and Bath Sealant

No products found.

Key features:

  • Mildew resistant
  • Last long
  • 100% silicone
  • All-purpose bathroom caulk
  • Waterproof
  • Available colors
  • 50 years guarantee

With 100% silicone rubber sealant, this product provides excellent flexibility and adhesion.

Moreover, DAP kitchen and bath rubber sealants are among the most popular silicone caulk available on the market. Also, it comes in different colors; you can choose one that matches your sink color.

This all-purpose bathroom caulk provides your project a long-lasting and waterproof sealing. You shouldn’t be worried about incidental food contact and mold growth; the resistant capacity of this product is excellent!

Gorilla White 100 Percent Silicone Sealant Caulk

No products found.

Key features:

  • Mold and mildew resistant
  • It won’t shrink or crack
  • Waterproof
  • Multipurpose used
  • Indoor/outdoor attributes
  • Great for sealing gaps

If you are looking for an all-purpose 100% silicone caulk for use almost anywhere successfully, Gorilla would be an excellent choice for you.

In addition, you don’t have to wait long to use your finished project; it’s a 100% waterproof and 30-minute water-ready sealant.

This sealant is available in white, clear, and Gorilla paintable types with two convenient sizes. It allows you to seal in the kitchen, baths, windows, door plumbing, and so on.

Red Devil 0816 100% Silicone Sealant

No products found.

Key Features:

  • Resists water
  • Lang lasting and flexible
  • Architectural grade
  • Great value for money

The red devil 100% silicone caulk is also worth considering for purchase because of its long-lasting, challenging, and flexible features.

You can even use it as an adhesive with rugged to bond surfaces such as plastic, glass, or aluminium.

Like the other above, this product doesn’t crack, or shrink and what’s more, you can apply it at temperatures below freezing. Not to mention the colors and sizes it comes with; all are highly appreciated.


All the sealants and caulk are not suitable for sealing sinks or baths. Also, all the silicone caulks won’t come with enough protective features.

So while buying a silicone caulk for the kitchen, you should go through the attributes it asked for.

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