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12 Best Shower Silicone Sealant In 2024

Bob Vila
  Feb 26, 2024 4:47 AM

We independently study, test, and review 12 Best Shower Silicone Sealant products before making recommendations. We’re testing the C.R. Laurence, GE, Gorilla, J-B Weld, Momentive Performance Materials, GE Sealants, Henkel, SKYLAR LIFE  for a for a future update to this guide.


It doesn't matter if you're looking for a shower or bathtub caulk. Not all caulk – whether it is silicone caulk, sanded caulk, paintable caulk – is the same and must be chosen depending on its intended use and the conditions in which it will be used. The following are the top seven shower and bathtub caulks.

It's not going to be the same caulk you use in the bathroom that you use on the windows.

When a bathtub contacts a wall or floor, caulk is used to fill in the gap between them. A crack surrounding a tub or shower can easily be filled in with this product. Keeping moisture out of the floor and behind tiles is essential. Mold and water damage might result if moisture is permitted to enter certain places. This and other water-related problems can be avoided if you use the correct caulk in your shower and bathtub. Here are some of the top caulking materials available on the market today.

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Last update on 2024-02-26 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

Buying Guide

Type of Caulk

Acrylic Caulk

Residential buildings should use acrylic caulk because it is the greatest alternative for caulking. It works especially well in damp environments, such as bathrooms or basements, where mold growth is a regular occurrence. Sinks, tubs, and kitchen countertops are all good candidates for this caulk. Easy to apply, it sticks well to surfaces and provides a smooth painting surface.

Types of Acrylic Caulk

Blended acrylic caulk and acrylic latex caulk are two types of acrylic caulk. Acrylic latex caulk is water-based, simple to use, and much simpler to clean up afterward. Blended acrylic caulk, on the other hand, is partially siliconized, extremely resistant to moisture seepage, and ideal for locations where moisture infiltration is an ongoing problem.

Silicone Caulk

For mold resistance, silicone caulk can only be found in a synthetic material. As with Grout for Shower, it is used by specialists to seal gaps between ceramic tiles, glass edges, porcelain, and other hard-to-clean surfaces. Compared to acrylic caulk, it sticks to surfaces significantly better. It is not brittle and may be easily cleaned of mold spores and patched up again.

Silicone Caulk Cure

Silicone caulk can be cured in two ways. Neutral caulk, which is best for wood and metal surfaces, is the first option. Non-porous surfaces, such as glass and glazed tiles, can be sealed with Acid cure. Acid cure silicone, on the other hand, has the potential to corrode metal and harm plastics.

Best Shower Caulk Buying Guide

Mold & Mildew Resistance

It is common for caulk to come into contact with water when it is applied to shower stalls or bathroom surfaces.

Mold can grow in places where the caulk is too rough, so make sure it's as smooth as possible before applying it. Mold contaminates the area, making it unsanitary.

Acrylic tubs and showers have black blotches at the edges, which might make you feel self-conscious about your appearance.

As a result, the finest caulk for shower walls must be particularly resistant to mold growth. The caulk must also meet this standard when it comes to pipes and fittings near the septic system.

This functionality is also required for exterior and ornamental caulks. As a result, mold growth on these items will be considerably slower than in the bathroom because they are not exposed to water.

When selecting a sealant for your shower enclosure, be sure to look for one that is resistant to mold and mildew.

Water Resistance

If you want to use caulk to seal a leak or fill a hole, this is a must-have function. Despite the fact that most caulks on the market have this function, you must make sure that the one you purchase is waterproof.

Mold will quickly grow on your caulk if it isn't waterproof, and you'll have to replace it with new caulk in a short period of time if it isn't.


The caulk must be elastic in order to avoid breaking when subjected to movement. If you're picking up caulk for a bathroom wall or ceramic tile floor, you don't need to worry about it failing this test (if you want).

Caulk used on shower doors or window frames, however, must be elastic enough to withstand the contractions and expansions of these surfaces. Shower grout, on the other hand, is required for use on tile floors in the bathroom and shower.

We also advocate using elastic caulk in stationary locations. New caulk will not break or come out in a little area because of this feature.

Ensure Flexibility

Shower caulk that has been properly dried should have a rubbery, pliable consistency.

Color Factor

To avoid discoloration, go for a white or translucent caulk.

Adhesive properties

Surface adhesion is an important quality of shower caulk.

Mildew Resistant

The caulk in your shower should be resistant to mold and mildew.

Paintable, if required:

Ensure that the product's label states that it is "paintable" if you plan on painting the surface after applying caulk.


What is the best caulking to use in a shower?

With pure silicone, you'll be able to stick to a wide range of different bathroom surfaces.

What caulk is mold resistant?

Silicone caulk is the most mold-resistant in situations where water and humidity are present.

Should you caulk between shower walls?

Showers and tubs, as well as their surrounding walls, should be caulked to prevent water from leaking into the room and causing damage. A caulked shower should be watertight, free of mildew and mold, and less prone to water damage if done correctly.

How often should you caulk your shower?

Even if the caulk in your bathroom appears to be in perfect condition, it is recommended that you replace it every five years. Caulking damage from peeling, cracking, mold, and mildew can be avoided with frequent cleaning and replacement.

How long does caulk need to dry before showering?

It's important to check the label on your caulk tube because each caulk has a different drying time. Drying times range from 30 minutes to 7 days, with the average being around 7 days.

How do you clean shower caulk?

You may clean your shower's caulk with the same cleanser you use to clean the rest of your bathroom.

What is the fastest way to cure caulking?

Applying caulk when the temperature is over 750 degrees Fahrenheit and the air is dry is the fastest way to cure it.


The best caulking around a tub or shower should be 100% waterproof and mold and mildew resistant when you're ready to put it in place.

You'll need to buy a caulking gun with a tube of caulk that will fit into it in order to apply these materials. A screw or nail can be pushed into the tube's aperture to keep the caulk from leaking out after you've finished using it.

If you keep caulk and sealant for more than a few months, they will begin to thicken and harden inside their containers.

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