What Type Of Caulk To Use For Quartz Countertops?

What Type of Caulk to Use for Quartz Countertops

A quartz countertop is a kind of solid, artificial stone. This is typically used in kitchens and bathrooms. To keep a kitchen glossy and clean, users can apply different types of caulk on their quartz countertops.

The white gesture of caulk can add a cozy look to any room. In particular, the usage of caulk can give a kitchen a fresh transformation. 

Moreover, the right caulk can help a user brighten his quartz countertop, even in the darkest areas. But a question can be raised in the user’s mind: what type of caulk to use for quartz countertops?

In this article, I will share my experience, and I am going to discuss the types of caulking on quartz countertops and how to choose the right caulk.

Type of Caulk to Use for Quartz Countertops: The Best Type

Caulking a quartz countertop is essential for the health of your kitchen or bathroom. It will create a tight seal that prevents any liquid or dirt from entering the gaps between the boards. It slightly depends on the quality of the caulk.

From my experience, I advise you not to use low-quality caulk because it can cause seeping water and the quartz countertop can be damaged quickly. 

As a result, it is always essential to use a kind of caulk that creates a firm, waterproof, mold-resistant seal. When sealing the kitchen countertops, a user should pay attention to the quality of the caulk.

Different countertops require different solutions. Such as, if someone asks what kind of caulk to use on the marble countertop, then, of course, the solution will be the same. However, that means a quartz countertop requires something specific for caulking. 

Loctite 100% Silicone

Loctite, 100% Silicone, is a perfect choice for a quartz countertop because silicone can handle high temperatures and provide mildewcide.

Mildewcide is a latex-based paint that eliminates mildew. It comes in two shades. One is white, and the other one is transparent. These mild colors of mildewcide allow the caulk to blend with any countertop surface.

Therefore, silicone caulk is popular because of its flexibility and ability to stick to any flat surface except wood. Moreover, silicone caulk is waterproof, which makes it perfect for bathrooms, kitchens, laundry rooms, and any other place with a lot of moisture. However, silicone caulk contains fungicide, which protects the caulk from mildew growth.

On the other hand, some people prefer latex caulk instead of silicone to seal their countertops because of its versatility in color. 

But the fact is that latex holds dirt quicker than silicone. So in this case, using silicon is best, and the reason is that the kitchen and bathroom are both wet environments. In such an environment, the surface of a quartz countertop becomes dirty quickly.

So, to keep a countertop clean, Loctite 100 percent silicone is preferred, and we cannot ignore the importance of using silicone for quartz countertops.

Loctite All-Purpose Polyseamseal Caulk

Loctite all-purpose Polyseamseal caulk is another excellent option for sealing kitchen or bathroom surfaces. This caulk can be used for a variety of tasks around the house, such as fastening tiles and sealing sinks. It is available in three colors. They come in three different colors: clear, white, and almond.

Including these colors, people can paint another color on the surface, making the surface more attractive and fresh. 

Polyurethane Caulk

The waterproofing and oxidizing capabilities of polyurethane caulk make it incredible, and the capabilities of this caulk convince people to use it.

Polyurethane can be used versatility as a caulk, sealer, and thick glue. This caulk might be applied to a quartz countertop surface with a caulk gun. Moreover, sealant caulk is flexible enough to avoid cracking and leakage while joining stretch and shrink.

Related: Why Does My Caulk Keep Cracking (7 Ultimate Reasons)

When it is necessary to paint any surface, polyurethane caulk is beneficial. However, it should be noted that maybe this caulk sticks well to most surfaces but does not work as well as silicone caulk. 

The majority of manufacturers’ warranties cover this caulk for five years. However, if sunlight shines directly on the caulking countertop, it may damage it sooner. However, polyurethane caulk is still popular since it is easy to clean and dries quickly. And it’s not easy to remove after fitting on a surface.


A well-known silicone caulk for quartz countertops is ASTM C920. According to ceramic tile and stone consultants, ASTM C920 silicone sealant lasts longer than others. To caulk a quartz countertop, ASTM 920 can provide waterproof caulking for a long time.

Some users may ask what kind of caulk can be used between the countertop and backsplash. And the answer is ASTM C920 is the right caulk. And it could be marked as the best caulk for the kitchen counter.

Acrylic Latex Caulk

Acrylic Latex Caulk is another type of caulk that is usually used for sealing quartz countertops. Many people prefer latex caulk because it has a fast drying time compared to other types of caulk, usually within a few hours. However, you better follow the manufacturer’s directions for best results.

Also, acrylic latex caulk is known for its ease of application. It can be found in squeeze tubes and cartridges, making them precise and controlled dosing.

How to caulk the quartz countertops

Quartz countertops require different caulk types compared to other countertop materials. The caulk you choose must be designed for quartz surfaces to ensure compatibility and the best results. The quartz countertop can expand and contract with temperature changes. Therefore, you need to pick a caulk that has sufficient flexibility.

First of all, clean the surface and ensure that it is dry. Cut the caulk tube at a 45-degree angle and load it into the caulking gun. Hold the caulking gun at a 45-degree angle and gently squeeze the trigger maintaining a steady pressure to apply a thin caulk line along the gap. Remove excess caulk, smooth it with a finger or wet sponge for a professional result, and let it dry.

You can easily squeeze the tube forming a line if you don’t have a caulking gun.

If you need re-caulking, the steps are the same. First of all, remove old caulk residue, and then follow the steps above.


Where caulk is supposed to be used to fill a gap in a countertop 

Silicone caulk can be used between a tub and tile, a countertop, a backsplash, or a window.

How can you get caulk off of your countertops?

Apply the manufacturer’s instructions and use a gelled silicone caulk remover. Such as “Silicone-Be-Gone,” to the quartz countertop area. Additionally, to remove the caulking, wipe the surface with a dry microfiber cloth in a small circular motion. Whenever necessary, repeat the procedure.

Is silicone safe to use on quartz?

Silicone is the best caulk for quartz countertops. 

How do you repair the gap between the counter and the sink?

Adhesive caulk is ideal for filling small gaps. Plastic spacers are used to lift a dropped countertop.

Wrapping Up!

All types of silicone caulk are the best for quartz countertops. Stop thinking about what is the right caulk to use for the quartz countertop because you already know the answer.

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