Can Flex Seal Be Used On Tiled Shower Floor?

can you use flex seal on shower tiles

Cracks in shower floor tiles are inevitable, but repairing them on time is essential to avoid further damage and replacement.

Fortunately, Flex Seal’s products (like Flex Shot and Flex Glue) come with water-repellent and mildew-resistant properties that can be used as a measure to prevent water from seeping through these cracks and causing more damage.

And because it provides a water-tight seal to prevent leaks, it’s an excellent alternative to a silicone-based sealant for a variety of other bathroom applications.

How to Use Flex Shot On Shower Floor?

Flex Shot is easy to apply, and you have a choice of four colors: white, black, clear, or almond.

So, regardless of your bathroom color scheme, you’ll be able to find a match.

One Flex Shot will cover up to 40 linear feet, depending on how thick the bead you apply. So if you buy a pack of two (usually available at Amazon and other stores), you can most likely work on any project, small or large.

1- Remove Existing Caulk and Clean

To apply, start by removing the existing caulk you have using a caulk remover and razor scraper – never use Flex Seal products over old caulking.

Once removed, thoroughly clean the cracks with soapy water and a brush to remove any dirt, mildew, or debris. Use vinegar or rubbing alcohol cleaner if required, as this will help the new Flex Shot sealant to adhere better.

Let the area dry completely before moving on to the next step. Flex Shot will certainly work on wet surfaces, but it works better on dry ones.

2- Apply Flex Shot to the Cracked Shower Floor

The Flex Shot comes with an extension tube that you can screw onto the end of the applicator, which is helpful for hard-to-reach areas like corners.

You can cut the extension tube to your desired thickness: cutting close to the base dispenses out a thicker line of Flex Shot, whereas cutting towards the tip would help make a thinner line.

To use Flex Shot, press down on the nozzle and evenly fill the cracked tiles area you are caulking.

After you finish applying the Flex Shot sealant, use your index finger to smooth it out so that it fills in every nook and cranny of the shower tile with cracks and gaps.

Once you’re done, wipe away any leftover product, and allow the sealant about 20 minutes to dry before touching it. If you feel there are any areas left, apply some more sealant and let it sit for 48-72 hours to cure fully.

Tip: After you’re done, release a bit of the sealant out of the end of the tube so that a plug forms. This will keep your Flex Shot from drying out when not in use. If you ever need to reuse it again, just remove the plug before application.

What’s the Difference Between Flex Seal and Flex Shot?

Flex Seal is basically a brand and an umbrella term used to refer to products the company sells.

When we talk about using Flex Seal, most commonly, it’s a liquid rubber, glue, or a paste in a can (or in buckets) that is sprayed or applied as a thick liquid to fix small cracks, holes, and leaks.

It looks like thick liquid rubber while wet but dries to form a thicker watertight, and flexible seal.

Flex Shot comes from the same product line, with an easy-use nozzle attached, making it much simpler to apply than its counterpart.

Although there is a difference, both Flex Shot as well as Flex Seal Glue works very well to create a waterproof bond on a variety of surfaces, including cement, concrete, tile, glass, plastic, aluminum, porcelain, wood, drywall, rubber, and others.

Just make sure the surface is clean and free of dirt and grease before you use them to create a stronger seal.

Is Flex Seal Better than Silicone?

Unlike silicone, a type of synthetic rubber that looks and feels like real rubber when dried, Flex Seal’s products, like Flex Shot, Glue, Paste, Spray, etc., are products that solidify as it dries.

Flex Shot, in particular, is a rubber-based sealant that creates a much stronger bond as compared to silicone caulking and is, therefore, a better product for fixing your large shower tile gaps or cracks.  

Flex Shot comes with easy-to-use applicators built in, as opposed to caulk and silicone sealants which would normally require a caulking gun. It also lasts much longer than your typical caulk or silicone sealant, with less cracking over time.

That said, Flex Shot may not be the right product for you if there are black molds present in your bathroom, as it does not include features to fight this common problem.

Also, because Flex Shot is very noxious, please make sure you have ventilation set up before using it. If possible, avoid using this product to fix minor hairline cracks on your tiles.

The bottom line

Flex Shot (by Flex Seal Family of Products) is an excellent product for caulking showers, baths, and cracked shower floors in your home, pool, RV, and motorhome.

The product is easy-to-use, creates a waterproof seal, and lasts much longer than traditional caulk or silicone sealants. It also doesn’t require a caulking gun like some of its competitors.

One downside, however, is that it doesn’t include features to fight mold, so if you have this problem in your bathroom, Flex Shot may not be the right product for you.

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