Best Caulk for Kitchen Sink | Buying Guide 2022

Best Caulk for Kitchen Sink

Caulking in the kitchen sink is a widespread practice that is carried out for a seamless and unified appearance. Since the sink area is subject to excessive working activity, there is an ultimate likelihood of water seepage in the base cabinetry that can further damage that place due to cracks, vents, and gaps. Therefore, the rim of the sink should be perfectly sealed with the counter so as to prevent any material leakage through the gaps between the sink and counter that can dampen the cabinetry. This process of sealing is called caulking and the material used to administer is known as caulk. Covering gaps, cracks, and vents is quite essential regardless of sink structure and material. This is because fixing them in the place to avert any movement is unavoidable. But choosing an appropriate caulk to fit best to the sink is not as easy as it sounds since there are a plethora of items to consider. Therefore, in this article, we have incorporated the top caulks being used in the market with remarkable reviews along with the buying guide.

Briefly, this article encompasses two sections; the first section consists of the recommended products with their merits and demerits. However, to look for a caulk other than our recommended ones, see the detailed guidelines to choose the best caulk for kitchen sink.

Best Caulk for Kitchen SinkReview

1. Henkel 908570 Clear Silicone Sealant

Henkel 908570 Clear Silicone Sealant

Key Features:

  • Brand: Henkle (Manufacturer: Loctite)
  • Dimensions: 1.25 × 3.81 × 8 inches
  • Weight: 3.52 ounces
  • Color: Clear
  • Material: Silicon
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In the list of best caulk for kitchen sink, our first recommendation is Loctite clear silicon waterproof sealant.

This multipurpose sealant has a profound ability to effectively caulk either inside or outside. As we are concerned with the kitchen sink, it is equally significant and valuable there as well.

Since the area around the sink has a recurrent exposure to water, it is quite necessary for the caulk material to be waterproof. Thankfully, it is having the ability to be strongly waterproof for being clear Silicon. Silicon is the material that gives the utmost protection against water leakage by acting as a strong barrier.

Continuing the features, it is also temperature & impactresistant, and flexible for any sort of timely variations.

This is not all about this waterproof sealant, rather this sealant can be used for a variety of materials as well. Since different structures of the sinks in different materials are being used nowadays, materials become reluctant to get caulked. But, if you have any of either sink; stainless steel, ceramic, aluminum, etc; you can effectively caulk your sink with this adhesive.

Well, overall this product is undoubtedly reliable because it has a high purchase rate in the marketplace, but it has some downsides as well that should also be kept in mind to make sure it is compatible with the requirement. The first downside is, that it is not paintable. In short, it does not allow you to get a smooth transition with the sink if there is a color difference between caulk and sink. Another drawback is, that it is not suitable to use where heat exposure is high such as near fireplace application.

Things We Like
  • The sealant can be used for a variety of sink materials.
  • Having Containing silicon, it is resistant to water seepage, providing ultimate high protection from leakage.
  • The caulk is flexible to withstand temperature variation.
  • A caulking gun is not needed.
Things We Don’t Like
  • The Sealant is non-paintable.
  • Not good to use near stove pipe and fireplace.

2. Flex Shot Black Rubber Sealant Caulk

Flex Shot Black Rubber Sealant Caulk

Key Features:

  • Brand: Flexshot (Manufacturer (Swift Response, LLC)
  • Material: Rubber
  • Weight: 8 ounces
  • Color: black
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As the name indicates, it contains rubber material, so it serves differently compared with the previous. This thick rubber sealant enables you to perfectly caulk by just triggering the nozzle of the tube in the area to be caulked. This shows that it saves your cost to spend on an additional caulking gun. For having contained rubber material, it is very flexible providing smooth beads without running as well as dripping. This way, it is not creating any mess during its application. You can wipe out the extra material around with a sponge easily. It does also neither crack over time by becoming heart nor does it shrink due to temperature variations.

Although Silicon in the previous product has been mentioned as the best waterproof material, this sealant does also not allow water to get leaked and penetrate.

The significance of this best caulk for kitchen sink gets enhanced by the fact that it comes in four colors; black, white, clear, and almond. With this facility, the trouble of painting is reduced and you can choose the color that matches or give a good transition.

Things We Like
  • With the caulk, bond, and seal functions, this rubber sealant provides a high-quality bead or seal for the kitchen sink.
  • The seal is waterproof and resistant to shrinks and cracks.
  • Easy to apply as there is no hassle of tackling running and dripping.
  • A caulking gun is not needed.
Things We Don’t Like
  • This is less economical.

3. Gorilla White 100% Silicone Sealant Caulk

Gorilla White 100% Silicone Sealant Caulk

Key Features:

  • Brand: The Gorilla Glue Company
  • Dimensions: 10 × 1.5 × 1.5 inches
  • Weight: 12.3 ounces
  • Color: White
  • Material: Silicon
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As the name represents, this Gorilla silicon sealant is a powerful caulking material granting a long-term seal between two surfaces against material passage.

Aside from being waterproof as an obvious characteristic owing to containing silicon, this is resistant to mold and mildew as well. Hence, it protects against bacterial growth.

Another characteristic is, it will not turn yellow gradually that is usually happened due to UV radiations. Similar to previous products, cracking and shrinking are also ensured to be prevented.

The uniqueness of this item lies in its translucent feature. It is white in color but being translucent, it seems clear. So you don’t need to paint it in order to match the color with the surroundings.

Like previous products, this does also not need a caulking gun.

Things We Like
  • The caulking does not subject to yellow over time.
  • It is translucent white, seems clear and unified after application.
Things We Don’t Like
  • The caulking is susceptible to undergo fungal growth over time.

4. DAP 18001 Kwik Seal White Latex Polymer Sealant Caulk

DAP 18001 Kwik Seal White Latex Polymer Sealant Caulk

Key Features:

  • Brand: DAP
  • Dimensions: 10 × 3 × 2 inches
  • Weight: 8 ounces
  • Color: White
  • Material: Latex Polymer
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The exclusive feature of this acrylic latex caulk lies in its paintable nature. Unlike previous items, it can be painted easily so you can match the color of the seal with the sink to reflect a seamless appearance.

Besides, the rest of the characteristics are almost the same. Such as it provides good resistance to water. Also, it acts as mold and mildew resistant.

Since water is a major concern when subject to the kitchen sink, this sealant can easily be cleaned whenever exposed to water.

It has a low odor, so you will not have any trouble while applying it. This sealant can easily be triggered into the area that is to be caulked because its nozzle is enough to carry out the process without using the caulking gun. These characteristics altogether make it the best caulk for kitchen sink.

Things We Like
  • It is paintable.
  • The product is has a very low odor averting any sort of irritation.
  • Provide adequate resistance to mold and mildew.
Things We Don’t Like
  • Squeezing out the product is very hard. For ease of use, we suggest you use a gun.
  • The product may not prove a substantial waterproof material.

5. GE M90007 Supreme White Silicone Kitchen Sealant

GE M90007 Supreme White Silicone Kitchen Sealant

Key Features:

  • Brand: GE Sealants
  • Dimensions: 6 × 12 × 8 inches
  • Weight: 0.8 pounds
  • Color: White
  • Material: Silicon
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This GE sealant is also a phenomenal caulk owing to its radical features. On the account of having silicon, this protects from water damage in the areas that are recurrently exposed to water.

Also, it provides ultimate protection from fungal growth as the previous products. The good thing about this item is, it is ready to use in 30 minutes after applying especially for water exposure. Not only this, this discoloring will not take place in the metals like bronze, nickel, and chrome.

The product has been made in a way that it produces very less order during cure due to a neutral cure formula.

Besides providing 7 times stronger adhesion, it has is the drawback of being non-paintable.

Things We Like
  • It provides 7X stronger adhesion.
  • Neutral cure formula is used to prevent order during curing.
  • Within 30 minutes its seal is ready to use.
Things We Don’t Like
  • It is non-paintable.
  • It requires mineral spirits for clean up.

Best Caulk for Kitchen Sink Buying Guide

Going through our top notches, you might be reflecting on having another caulk for your kitchen sink. For this, you need to be mindful of certain factors to ponder while buying a new product.

A summary of these factors is; Caulking material, sink structure & material, flexibility & durability, paintable or non-paintable, administration, and Caulking gun & putty knife.

See details of each of them below.

Caulking material

Although there is a huge list of caulk materials, we have categorized the majorly used ones. Among them, there are Silicon, Latex, Butyl Rubber, Polyvinyl acetate, and oil base. All these materials differ in adhesion, durability, shrinkage, and cost.

  • Silicon
    This is the best-used material for sinks as it is strongly waterproof and can last for years. This cannot be painted.  Also, it is more expensive.
  • Latex
    This is a quick-drying water-based adhesive. It can be easily cleaned up and can shrink a little.
  • Butyl Rubber
    If you are interested in caulking between metal and stone or brick, this is the best choice for that purpose. Although this is long-lasting, it is fairly expensive.
  • Polyvinyl Acetate
    This caulk is inexpensive and used on any surface. It also has a fair endurance.
  • Oil base
    It can be used for almost any surface but this can shrink and harden over time. The good thing is it is inexpensive.

Sink structure & material

Sinks come in different materials such as stainless steel, quartz, copper, Neoroc, etc.  Similarly, sinks have different structures such as drop-in, undermount, and farmhouse. All sealants cannot necessarily stick and last for a long time on these surfaces and structures.  Therefore, using a caulk that can stay longer is essential. In this wake, we have mentioned the details of certain caulks in the above description so you can have a better idea of the chosen material’s compatibility with your sink material.

Generally, pure Silicon is considered a versatile material for caulking on the account of its flexibility, waterproof characteristic, durability, and long-lasting power.

Flexibility & durability

This reflects resilience for variations in temperature, load, and water clean-up. Also, it should be impact resistant.

About cleaning, since the area around the sink is prone to water, it is quite obvious for caulk to stay in contact with water. In this view, recurrent clean-up is carried out that can damage the caulking if a sub-standard material is used.

Not only this, timely variations can cause shrinking and cracking in caulk. Over time, the mold and mildew can also prevail. To prevent all these issues, you need to review the product before purchase by going through the customers’ views in the marketplace. The products we have listed above have upright flexibility and endurance that altogether make them durable and long-lasting. They all are economical and fully practical. To sum up, ensure that the best caulk for kitchen sink incorporates all these features.

Paintable & non-paintable

If the caulking material is paintable, you can color it to match with the sink so it will give a seamless look with the same color. If the material is not paintable, you can paint the surface with the color that is of caulk. But this demands money. To overcome this challenge, many caulks are made translucent, which gives an impression as nothing has been applied since they are clear and act as semi-transparent material.


This takes into account the carrying out of caulking on a surface. This has been observed that many materials have an irritating odor during application. Also, they become hard to clean if extra material gets applied around.

The silicone caulk needs a mineral spirit to wipe off extra material from the sides. However, others can be cleaned with a wet cloth or a sponge.

The best caulk for kitchen sink does neither cause irritation due to its odor nor does it runs and drip to create a mess during application.

Caulking gun & putty knife

This equipment is used to apply caulk (using disposable cartridges). However, Nowadays a caulking gun is not needed anymore for the tube itself has a nozzle to be triggered in the area to be caulked. But, if squeezing is hard to have material come out, you need to use a gun.

A putty knife is also used for applying caulk but this is considered when the knife-grade caulk is concerned. This is used when cracks are wide.


You have walked through the products that are the upshot of detailed study and observation. All the information is authentic and fact-based. Since all the products are our best ones selected, they have versatile features to compete with others. Among them, Henkel 908570 Clear Silicone Sealant is on top of the list owing to its exclusive characteristics. This is clear from the details that it is fully useful in terms of quality as well as cost. Being subject to pure Silicon, this provides ultra water seepage resistance when compared with other caulks. Moreover, this is also highly suitable for any type of material. Therefore, our number one preference is Henkel 908570 Clear Silicone Sealant.

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