The Best Caulks for Showers — Silicone, Rubber, and Acrylic Types

DIYers like us have many options for caulking. The market offers a myriad of products that can help us seal cracks and gaps in our bathrooms. I have here around nine products that you guys can try.

Later in this article, I also share some tips and techniques on caulking. If you’re just starting out, this should shorten your learning curve.

Our Top Pick is the Alex Plus Latex Caulk with Silicone. I like it because it’s waterproof, flexible, durable, and mold and mildew resistant. It provided the help I needed to fix my ceramic tile.

The Best Caulks for the Shower Are:

ProductDetails  
9.Alex Plus Latex Caulk with Silicone

 

  • Easy cleanup
  • Paintable after 30 minutes of application
  • 35-year guarantee on durability
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2.Loctite Polyseamseal Tub and Tile Adhesive Caulk

 

  • White
  • Multi-purpose sealant
  • Excellent anti-mildew and anti-mold properties
  • Made in the USA
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3.Gorilla Clear Mold & Mildew Resistant Caulk

 

  • 100% silicone
  • All-weather sealant caulk
  • Mold and mildew resistant
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4.Silicone GE284 Clear Kitchen & Bath Silicone Caulk

 

  • Fits with many caulking guns
  • Outstanding heat resistance
  • 100% water resistance
  • Comes with a screw-on cap
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5.Dynaflex 230 Premium Indoor/Outdoor Sealant

 

  • White
  • Crack-Proof, Flexible, and Permanent Seal
  • Mildew and Mold Resistant
  • Suitable for Doors, Windows, Trimmings, Sidings, Baseboards, and Moldings
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6.Flex Shot Rubber Adhesive Bathtub Caulk

 

  • Doesn’t need a caulking gun
  • Extension tube makes hard-to-reach areas accessible
  • No dripping, no running, no mess
  • No waste
  • Expands and contracts for easy filling of large holes and cracks
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7.Color Matched Caulk by Colorfast

 

  • 31 color options
  • All-weather
  • UV and moisture resistant
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8.Sashco Big Stretch Caulk

 

  • Paintable
  • Crack-free
  • Long-lasting
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1.Sashco 13010 10.5oz Clear Lexel Adhesive Caulk

 

  • Transparent
  • Extreme elasticity
  • For wet surfaces
  • Co-polymer rubber-based sealant
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1. Alex Plus Latex Caulk with Silicone

I’ve been searching for a silicone caulk with a color that matches the color pattern of my shower. I chanced upon the Cedar Tan Alex Plus Latex while shopping online. I bought the product because it matched the color scheme of my shower.

I used it to fix some tiles and discovered that it was flexible and waterproof. It was also mildew and mold resistant and durable. It worked well on my ceramic tiles.

However, one flaw that I can say about this caulk is that it has a foul smell. I had to open the windows and use an electric fan to dissipate the odor quickly. It dried to an excellent matte cedar tan that matched the color of my shower tiles.

Specs

  • Easy cleanup
  • Paintable after 30 minutes of application
  • 35-year guarantee on durability

Pros

  • Easy to clean
  • Value for money
  • Easy to use
  • Excellent adhesion

Cons

  • Potent chemical odor
  • Not for professional use

If you want the sealant to match the shades of your bathroom tiles, you may opt for the Alex Plus Latex Caulk with Silicone. You can choose from black, cedar tan, slate grey, brown, dark bronze, and antique white colors.

It’s flexible, long-lasting, and waterproof. Moreover, mildew and mold resistance is also one of the best. It works well on bricks, wood, ceramics, glass, metals, and other finishes. You can place the caulk in the corner shower caddy after usage. 

Overall Rating: 4.5

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2. Loctite Polyseamseal Tub and Tile Adhesive Caulk

The Loctite Polyseamseal Tub and Tile Adhesive Caulk are useful for mildew prevention and waterproofing for bathtubs and shower systems. However, it is also an excellent general-purpose sealant, so I keep it handy. I used it when I installed some plumbing fixtures in my bathroom.

What I like about the product is that it adhered to stainless steel. It’s not surprising because the manufacturer also said that it’s for ceramic, fiberglass, aluminum, wood, wallboard, porcelain, enamel, and different types of plastic. The mildewcide content of the shower caulk is responsible for its mildew prevention properties.

However, I discovered that it doesn’t set instantly, so I need to wait for some time to use my bathroom sink. I waited for three days for it to dry completely.

Specs

  • White
  • Multi-purpose sealant
  • Excellent anti-mildew and anti-mold properties
  • Made in the USA

Pros

  • Outstanding adhesion
  • Easy to use
  • Easy to clean
  • Durable and flexible

Cons

  • Shrinkage may cause cracks
  • Doesn’t set instantly

The Locktite Polyseamseal Adhesive Caulk is an excellent shower sealant. It also provides superb mildew prevention attributes. However, like all other sealants, you need to ensure that you give it time to set. If you used it on an area, ensure that you don’t use it unless you’re sure that it has thoroughly dried.

Overall Rating: 4.5

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3. Gorilla Clear Mold & Mildew Resistant Caulk

The Gorilla brand is famous as a manufacturer of different kinds of adhesives. It also offers the Clear Mold and Mildew Resistant Sealant Caulk that is 100% silicone, waterproof and dries translucent clear. It is an excellent alternative for outdoor and bathroom use.

What I like about the product is its quick drying property. I was able to use my shower after 30 minutes of application. The standard packaging is a plastic tube that is similar to the other caulking brands. I just cut the tip to my desired bead size and voila! I was able to use it fuss-free. I also don’t like the foul chemical smell, but to resolve the issue, I opened the windows to allow the odor to dissipate.

Specs

  • 100% silicone
  • All-weather sealant caulk
  • Mold and mildew resistant

Pros

  • Excellent adhesion
  • Value for money
  • Easy to use
  • Won’t crack, shrink, or yellow

Cons

  • Doesn’t set instantly
  • Strong chemical smell
  • Poorly made and cheap plastic container
  • Difficulty in adhering to polyethylene surfaces
  • Can’t paint over it

If you’re searching for a sealant caulk for your shower, you may try the Gorilla Clear Mold and Mildew Resistant Sealant Caulk. Adhesion. Its performance is outstanding, and the product won’t crack, yellow, or shrink. However, if you can’t stand the strong chemical smell, you have to open the windows to let the smell dissipate.

Overall Rating: 4.5

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4. Silicone GE284 Clear Kitchen & Bath Silicone Caulk

The GE Silicone Kitchen and Bath Caulk needed three hours after application before I could use my shower. However, according to the manufacturer, my tiles would be mildew and mold-free for five years, so I have to wait before I can find out. Just like the other bathroom caulks, this product is suitable for many surfaces like ceramic, glass, plastic, wood, laminate, metal, and granite. I used it on my ceramic tiles, and I’d say it did its job.

What I like about the GE Silicone Caulk is that it passed many Federal Standards, so I have an assurance that it doesn’t go against any government laws or guidelines. Additionally, it is 100% waterproof and resistant to both UV rays and heat. If you want to ensure quality, you may be ecstatic to find out that it’s 100% US-manufactured.

My only complaint was that I had trouble squeezing out the contents from the tiny container. Maybe I’m just used to using the caulking gun on big tubes. This product is excellent for small repairs.

Specs

  • Fits with many caulking guns
  • Outstanding heat resistance
  • 100% water resistance
  • Comes with a screw-on cap

Pros

  • Extremely flexible
  • Small package for small projects
  • Outstanding adhesion
  • Easy to clean

Cons

  • Not paintable
  • Difficult to squeeze out

If you plan to do modest repairs, you may try the GE GE284 Silicone 2+ Kitchen & Bath Sealant Caulk Squeeze Tube. It’s 2.8oz packaging can do the job.

You have to wait for about 30 minutes before it becomes water-ready, but you need to wait longer if you want it to cure completely. It is suitable for sealing showers, sinks, fixtures, backsplashes, tubs, countertops, and plumbing projects.

Overall Rating: 4.4

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5. Dynaflex 230 Premium Indoor/Outdoor Sealant

This adhesive caulk is an all-weather, extremely durable sealant. The airtight and watertight packaging ensures that it won’t deteriorate over time. What I like about the Dynaflex Premium Sealant is its ease of use. Moreover, it provided a seal that hasn’t cracked or chipped yet.

If you’re very particular about the sealant color, you may be happy to know that it’s white and will blend with many bathroom themes. However, if your shower is in dark colors, you may want to exercise discretion. I have white tiles in my privacy area, so the white sealant isn’t an issue. The product also has anti-mildew and anti-mold properties, so it’s essential for humid and damp places like your kitchen sink and shower.

Specs

  • White
  • Crack-Proof, Flexible, and Permanent Seal
  • Mildew and Mold Resistant
  • Suitable for Doors, Windows, Trimmings, Sidings, Baseboards, and Moldings

Pros

  • Easy to Use
  • Matches with different decor
  • Paintable
  • Durable

Cons

  • Needs a caulking gun
  • Won’t set at times

You may prefer the Dynaflex 230 for your sealant needs in your shower. If the white color doesn’t match your décor, you may prefer to paint over it. The caulk ensures that your tiles are mold-free and mildew free for a long time. It’s easy to use, so you can finish your repair tasks in as little time as possible.

Overall Rating: 4.2

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6. Flex Shot Rubber Adhesive Bathtub Caulk

If there’s one thing that I honestly like about this bathroom caulk is that it doesn’t need a caulking gun. If you’re a DIYer like me, you can pick it up and use it for repairing little leakages. You save money on the caulking gun and the fee for the repairperson. The caulk didn’t crack even for thick layers. I’ve been using other sealants too, but the Flex Shot stands out for sandwiching layers and filling a big crack.

The flexibility of the Flex Shot Caulk relieves me of worries about cracks when using on a tension surface. Moreover, it has excellent mold resistance properties and seals the ceramic and plastic corners excellently. I feel like a professional when caulking the shower tiles. This product is tops for easy removal.

Like all other products, the Flex Shot has a drawback. It is a struggle to use for a whole day job because it doesn’t fit any caulking gun. For hobbyists or DIYers, it will do, but if you’re a professional, you better search for another sealant caulk.

Specs

  • Doesn’t need a caulking gun
  • Extension tube makes hard-to-reach areas accessible
  • No dripping, no running, no mess
  • No waste
  • Expands and contracts for easy filling of large holes and cracks

Pros

  • Outstanding adhesion
  • Easy to remove
  • Easy to use

Cons

  • Strong chemical smell
  • Clogged nozzle
  • Not for professional jobs

If you’re only doing small tasks and want to save money, you can purchase the Flex Shot Rubber Adhesive Bathtub Caulk for minor repairs. It binds materials flawlessly in no time. However, you may not like the strong smell. I suggest that you open the windows and use an electric fan to allow the foul smell to dissipate quickly.

Overall Rating: 4.2

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7. Color Matched Caulk by Colorfast

I like the Color Matched Caulk by Colorfast because of the versatility of colors that it offers. It’s my top choice for this category. I get to choose a shade that matches my shower theme. Siliconized acrylic latex caulk is convenient to use in all weather conditions. Its 10.3 oz cartridge tube makes it easy to apply caulk using a caulking gun.

I also like its mildew resistance and UV and moisture protection. I think these properties are the nice-to-haves in any sealant caulk. However, I’m not a big fan of its consistency because it continues to flow out of the tube even when not in use. However, with practice, I was able to control its flow. If the usage of caulk looks hideous then you can use a high-end shower curtain to hide and divert the attention from it. 

Specs

  • 31 color options
  • All-weather
  • UV and moisture resistant

Pros

  • A wide array of color choices
  • Excellent performance on ceramic tiles
  • Durable

Cons

  • Difficult to work with
  • Wasteful
  • Extended curing time

If you’re having a hard time searching for a caulk that matches the color scheme of the shower, you’ll be happy to know that Color Matched Caulk by Colorfast offers 31 colors. You may opt for a shade that matches your tiles or grout.

The caulk delivers reliable performance on ceramic tiles. However, you may need to be extra cautious about using it because it’s wasteful. Moreover, you have to give it time to dry out completely.

Overall Rating: 4.3

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8. Sashco Big Stretch Caulk

The ultra-elastic formula of the Sashco Big Stretch Caulk seals almost all types of surfaces. It dries immediately, so you can quickly finish your task without any significant issue. Instead of cracking like the other caulks, it stretches to ensure an excellent performance that will save you money. I was even able to use it on metal.

I tried painting over the dried sealant after one week, and I got a smoother finish. This acrylic latex caulk even adheres to vinyl and other intricate surfaces. In case you don’t want to paint over it, you may choose from the 12 vibrant colors that match your color pattern. The product can withstand extreme conditions from -30 to 250 degrees Celsius. If you need to reapply you can remove it using a shower cleaning brush before it dries out. 

What I don’t like about the Big Stretch is its long curing time. I’ve already pointed out that it took me seven days of waiting to let it completely dry before I can paint over it.

Specs

  • Paintable
  • Crack-free
  • Long-lasting

Pros

  • Heat resistant
  • Different colors
  • Smooth texture for easy application

Cons

  • Slow to dry

If you’re after elasticity and longevity, you may opt for the Sashco Big Stretch Caulk. It works on many surfaces and is quick drying. You’ll save money because it won’t crack due to its ultra-elastic properties.

However, you have to wait for at least seven days before it dries completely. If you’re pressed for time and wanted the shower to be ready immediately, you’ll be disappointed.

Overall Rating: 4.4

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9. Sashco 13010 10.5oz Clear Lexel Adhesive Caulk

The Sashco Clear Lexel Adhesive Caulk is durable and resistant to harsh household cleaners. It is remarkably elastic and doesn’t pull away, tear, or crack from the joint.

I used it on my bathroom tile and discovered that it created a permanent and stable bond. What I like about this product is its instant setting. I didn’t have to wait for long periods to use the shower again.

A few months after application, I haven’t noticed any mildew and mold growth on the caulk surface. Moreover, the joint didn’t yellow or cloud over time. However, I had trouble controlling the bead once I set it down.

Specs

  • Transparent
  • Extreme elasticity
  • For wet surfaces
  • Co-polymer rubber-based sealant

Pros

  • Excellent adhesion
  • Sets instantly
  • Ease of use
  • Value for money
  • Doesn’t yellow over time

Cons

  • Have a fan and dehumidifier to achieve excellent results
  • May not adhere properly sometimes

The Sashco 10.5oz Lexel Adhesive Caulk is an excellent sealant. If you’re making some repairs on your shower tiles or glass, you may opt for this product because it binds the flooring effectively to the surface. However, you have to control the flow of the sealant if you don’t want excessive caulk where you don’t need it.

Overall Rating: 4.4

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The Best Silicone Caulks for Showers: Buying Guide

Buying a silicone caulk isn’t as easy as 1-2-3, especially if you have no idea yet about it. Let me share with you some of the things that you must know about caulk and its application. You may have come across people who said that they bought a crappy caulk.

No one wants to buy something that doesn’t fit his requirements, so I came up with a buying guide to help you decide the best caulk for a shower that will satisfy your needs.

Mildew and Mold Resistance

The first that you must search on a caulk packaging is a phrase about mold resistance. If you’re going to use it for the bathroom or shower, you need sealant caulk that prevents its growth. A smooth caulk will allow water to stick to its rough areas and hasten the growth of molds. Remember, an unhygienic area is a place where mildews thrive.

Aside from being unhealthy, you will also feel uncomfortable if you see dark spots in your shower area. The best silicone caulk for shower must protect your bathroom against molds and mildews. Even if you’re going to use it outside, you also need the sealant to be mildew and mold resistant.

Water Resistance

If you want to fill a grout or seal leakage, you must make water resistance a top consideration. Although caulks nowadays have this feature, you must ensure that you choose a waterproof one because molds thrive in the wet surface. If you want to save money and time from the constant changing of the caulk, you have to select a sealant that dries efficiently.

Elasticity

Another factor in choosing a sealant caulk is mold resistance. A flexible sealant doesn’t break easily. If you plan to use it on shower windows and doors, you must ensure that your chosen brand is elastic to outlast expansions and contractions. However, it is also efficient to put it on non-moving shower areas because it won’t crack or chip.

Temperature-Proof

You have to choose a brand that can endure weather changes. Weatherproof caulk doesn’t crack during the annual seasonal changes.

Caulk Application

You’ll find two caulk tube types in the market. The first one requires a caulking gun while the other doesn’t. You may choose the latter if you plan to repair a small part of your shower area. On the other hand, if you have some work to do, you have to choose the caulk that needs a gun for straightforward application.

Caulk Color

If you’re fixing a small part of the bathroom, you have to ensure that the caulk that you buy is of similar color to the applied caulk and matches the tile or sink color. Many manufacturers produce caulk in white and transparent colors. However, a few of them also offer colored or paintable caulks.

Drying Time

A fast-drying caulk is essential because you frequently use the bathroom. You can’t wait for days to use your shower.

Price

You’ll discover that a shower caulk can vary in price. Some brands are expensive, while others are affordable. A sealer caulk doesn’t have unique materials and isn’t hard to make. Therefore, you don’t expect it to cost an arm and a leg.

Amount of Caulk Needed

Many people fail to estimate the amount of caulk they need. Most probably, they don’t know how to compute. Allow me to share an easy to understand formula.

The area that a caulk tube can cover (in linear meters) = size in mm / (calk surface depth x width in mm)

For instance, you have a 250ml caulk tube. Its depth is 8 mm, while its width is 6 mm. The sealant caulk will cover 5.21 linear meters. However, you must add around 10% wastage per tube.

Shower Caulk Types

A caulk has different classes, but we’ll consider the most common ones.

Acrylic Latex Caulk

Acrylic latex caulk, also known as painters caulk, is paintable. It is suitable for the repairs of tiny holes in wood and interior building materials. Professionals opt for this type because they can easily paint over it after application.

Vinyl Latex Caulk

Vinyl isn’t easily washable by water and soap. It lasts longer than acrylic; therefore, you use it if you’re building a permanent structure. However, it cracks easily with contraction and expansion because it isn’t as flexible as acrylic latex caulk.

Silicone Caulk

You may have trouble in searching for a 100% silicone caulk because manufacturers have their unique mixing formulas. Silicone is sticky and extremely flexible, waterproof, long-lasting, and mold and mildew resistant.

Caulking Gun

A caulk gun is the most prevalent method of applying caulk because it offers a more continuous bead. If you want to use it, you must opt for something with a built-in cartridge piercer and tip cutter for easy and quick caulk application. However, if you’re doing smaller tasks, you’re better off with a squeeze tube. You must ensure a steady pressure if you want your caulk to spread evenly.

Caulking in Cold Temperature

If you want to repair or construct a new shower area during the cold weather, you must ensure that you use high-quality silicone caulk.

Latex caulk is most efficient when temperatures are from 40 degrees to 80 degrees Fahrenheit. Cold caulk won’t flow smoothly and fill or seal an area as expected. You can keep the caulk tubes warm by storing them indoors.

Difference Between Sealants and Caulks

Many people use the terms caulks and sealants interchangeably. Although both of them can fill gaps, they have significant differences that you must know.

A caulk is excellent for stable temperatures and rigid. It is paintable, and you can easily clean the smudges with water. You will often use a caulking gun to apply it.

A sealant, on the other hand, is more efficient in fluctuating temperatures because it’s flexible. However, it isn’t paintable, and you need a solvent to clean the smudges. Like the caulk, you need a caulking gun for its application.

Make sure to wear shower shoes so that the sealant doesn’t stick to your feet and mess up the application. 

If the temperature goes beyond 40 degrees Fahrenheit, you must use water-based caulks for the best results. These caulks are easier to work with because you can clean drips or smears with water. You may also use water-based caulks for filling in cracks and gaps.

One bonus tip is that you can use a Bluetooth shower speaker to get yourself entertained. 

Final Thoughts

You certainly don’t want to spend a lot of money on shower repairs. If there are cracked tiles that you need to replace, you won’t need to replace all tiles. You only have to repair or replace the broken one. Moreover, you don’t need to hire a professional to replace a single piece of ceramic tile. Why don’t you repair it yourself? 

If there’s a product from the nine caulks I recently reviewed that I want to recommend, it will be the Alex Plus Latex Caulk with Silicone. I have no use in trying all the colors, but I did try the cedar tan, which matched the color scheme of my shower. Make sure to keep the shower clean and tidy by using a shower cleaner spray.

However, Alex Plus isn’t a perfect caulk. One thing I don’t like about it is that it has a horrendous smell. Thankfully, the odor dissipated when I opened the window and used an electric fan.

If you want a color caulk with all the characteristics of the other sealant caulk, you may try the Alex Plus Latex Caulk with Silicone.

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