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Can You Use Flex Seal On Shower Floor?

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Are you looking for a quick and easy way to seal or repair a crack in your shower floor? If you're considering using Flex Seal, you've come to the right place. We've put together this guide to help you determine whether or not Flex Seal is the solution you need. 

Yes, Flex Seal's products, specifically Flex Shot, can be used to seal showers and tubs. 

You probably want to know what the difference is between Flex Shot and Flex Seal. And how does silicone sealant compare? In this post, we'll answer these questions and more. Keep reading to learn all about these products and how to use them.

Corian floor and drain from modern shower in luxury bathroom, Can You Use Flex Seal On Shower Floor?

Will Flex Shot Work To Seal A Shower Floor?

Yes, Flex Shot can be used as an alternative to silicone sealant for shower floors and other bathroom applications. It will provide a water-tight seal to prevent leaks, and you can find it in a variety of shades to match your bathroom's color scheme.

Flex Shot is water repellent and also comes in varieties with mildew-resistant properties, which is important for wet areas like bathrooms.

Flex Shot Mildew-Resistant Caulk

This two-pack of Flex Shot should be enough to tackle most shower projects. They come in white and have mildew-resistant properties, making them a great choice for bathroom applications. 

Click here to see more on Amazon.

Is Flex Shot Better Than Caulk?

White silicone sealant being applied using a caulk gun in a bathroom shower.

Flex Shot has its own set of benefits and drawbacks when compared to traditional silicone caulk. Both options are reliable and will work for shower and bathroom applications, however, you will need to weigh the pros and cons to determine the best option for your space.

What Are The Drawbacks Of Flex Shot?

Silicone sealants and caulks for bathrooms include mold- and mildew-resistant chemicals in their formula. Flex Shot only offers mildewicide and is not equipped to fight mold, which could become a concern. Flex Shot is also very noxious, so you will need proper ventilation when using it.

What Are The Benefits of Flex Shot?

Although Flex Shot does not offer mold resistance, it does have a strong track record of lasting longer than standard caulks and sealants with less cracking over time. Flex Shot also makes products with easy-to-use, built-in applicators, unlike caulk and silicone sealants which typically require a caulk gun. 

Gray silicone out of silicone pistol isolated on white

Can You Put Flex Seal Over Caulk?

Never use Flex Seal over old caulk. Always remove any existing caulk before applying a new product. Simply use a caulk removal tool or a scraper to lift any old caulk, then wipe the area down with rubbing alcohol.

Flex Seal spray and liquid can be applied over existing caulk as a quick fix, but it's harder to control and won't result in a very eye-pleasing application.

Using the spray or liquid versions of Flex Seal can also create more issues when you are ready to fix the problem correctly, as it can be tough to remove. Flex Seal liquid products do not offer any resistance to mold or mildew either, which can lead to future issues.

Flex Seal Spray Rubber

This two-pack of Flex Seal spray adhesive is great to have around the house for emergencies. It creates an instant waterproof seal that can put a stop to leaks quickly and easily. Flex Seal spray comes in a variety of colors so you can find the perfect color for your bathroom.

Click here to see more on Amazon.

Can You Use Flex Seal Instead Of Silicone?

Flex Seal Liquid Sealer Lubricant

Flex Shot caulk can certainly be used instead of silicone caulk, but Flex Seal liquids and sprays are not intended to replace caulk.

Flex Seal liquid products create a thin layer of protection that is best for flat surfaces, not filling and waterproofing large gaps between surfaces. So, if you're looking for an alternative to silicone sealant, Flex Shot is the better option.

What Is The Difference Between Flex Shot and Silicone?

Flex Shot and Flex Seal are both liquid rubber products that solidify as they dry. Silicone is a type of synthetic rubber that looks and feels like real rubber when it dries. Both silicone and Flex Seal products are available in a variety of color options. 

GE Sealants And Adhesives Silicone Sealant

This silicone sealant is for use in kitchens and bathrooms or anywhere with regular exposure to moisture. It comes in white, clear, or almond and it's mold and mildew resistant. You will need a caulk gun to apply this sealant.

Click here to see this silicone sealant on Amazon.

On What Surfaces Can You Use Flex Seal?

Flex Seal sprays and liquid coatings work on a variety of surfaces. Flex Seal liquids work great on wood, concrete, metal, tile, glass, masonry, plastic, aluminum, porcelain, drywall, rubber, cement, and many more materials.

Make sure to clean the application area very well and remove any grease and grime before applying the product so it adheres properly.

On What Materials Can You Use Flex Shot?

Flex Shot will create a waterproof bond between almost any two surfaces—porcelain, tile, fiberglass, glass, metal, wood, stone, marble, granite, and just about any other material. Before using Flex Shot, make sure your surface is clean and free of dirt and grease to create a strong seal.

Flex Shot Rubber Sealant Almond

This two-pack of Flex Shot comes in an almond color and is mildew resistant. It offers a nice neutral color option for a subtle appearance.

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What Is The Difference Between Flex Seal and Flex Shot?

A view of several cans of Flex Seal Clear, on display at a local hardware store.

Both Flex Seal and Flex Shot are part of the same product line. Flex Seal is available in a spray can form as well as in a bucket and looks like thick liquid rubber until it dries. The product Flex Shot is actually a type of rubberized caulk that comes in a pressurized can with a built-in nozzle for easy application.

Flex Seal Clear Rubber In A Can

You can apply this can of liquid Flex Seal with a roller or a brush. You can also dip items directly into it, or you can pour this liquid right onto your problem surface. It's available in multiple sizes and colors for convenience. 

Click here to see more on Amazon.

Is Rubber Flexx The Same As Flex Seal?

Rubber Flexx is very similar to Flex Seal spray, but it offers less surface compatibility and is only available as a liquid or tape. It adheres to metal, asphalt, wood, and masonry and is available in black or white. Rubber Flexx isn't available in caulk form, so there isn't an option that will work on shower floors.

Leak Stopper Rubber Flexx Spray

This 18-ounce can of Rubber Flexx is a good option for small waterproofing projects. It doesn't work as a substitute for caulk or silicone sealant, but it will create a thin waterproof rubber membrane to stop surface leaks. It's available in black or white and as tape or as paint or spray-on liquid.

Click here to see more on Amazon.

Can You Paint Over Flex Seal?

Yes, you can paint over Flex Seal products with most interior and exterior paints. It holds color very well and doesn't crack or peel easily. This can be a huge advantage if you want to make your repairs as unnoticeable as possible.

Does Flex Seal Stand Up To Extreme Temperatures?

Flex Seal products can withstand extreme heat and cold without losing integrity. During application, these products require temperatures above freezing in order to cure properly. Once they have had time to cure, they can handle cold temperatures without a problem.

Can You Use Flex Seal On Wet Surfaces?

Flex Seal's line of products will work on wet surfaces but adhere best to dry areas. Do your best to dry the area before using these products, but if it's not possible to dry the application area, the adhesive should still work.

Grease and oil are larger obstacles to adhesion, so wipe the surface with rubbing alcohol to remove any grime.

Sealing The Deal

A view of several cans of Flex Seal Clear, on display at a local hardware store.

Now that you know how to use Flex Seal and Flex Shot around your home, you can determine the best product and application for your specific project. Remember to wear gloves and face protection when using these products, and ensuring proper ventilation is a must. Good luck with your project!

For more help choosing the perfect caulk for your bathroom project, read this article: 7 Types Of Caulk For The Bathroom [And Which To Choose]

If you're looking for more advice on where and how to caulk a shower floor, read this article: Should You Caulk Around A Shower Base? [Inc. Inside The Enclosure]