What Happens If You Don’t Seal Natural Stone in a Shower?

modern coastal interior design

Introduction: Don’t Let Your Shower Become a Natural Stone Horror Show!



So, you’ve decided to treat your bathroom like royalty and install natural stone in your shower—bravo! But here’s the million-dollar question: What happens if you don't seal natural stone in a shower? Does it just stand there, proudly repelling water like a good soldier? Or does it start to look like something you’d find in a dungeon? Spoiler alert: It's not good. If you’re skipping that all-important sealant, your beautiful stone could turn into a haven for mold, stains, and a whole lot of headaches.


a shower with natural stone tile
A shower area - sealing natural stone is important

But don’t worry! We’re diving deep into why sealing your natural stone shower is a non-negotiable step, with some useful tips to keep your stone looking as fresh as the day you installed it.

Why Natural Stone Needs Sealing

1. Natural Stone Is, Well, Natural!



First off, natural stone, as the name suggests, is a product of Mother Nature. Stones like marble, travertine, limestone, and slate are beautiful but porous by design. TThese may seem like imperfections, but they’re actually what make these tiles perfect. Still, lets ask this question; 



What does that mean for your shower? Every time water splashes, it can seep into the stone’s pores, leading to water damage over time. Without a sealant, that natural beauty can degrade faster than you can say “spa day.”


green floor mosaic tiles
Mosaics.co's handmade mosaic tiles - sealed natural stone mosaics

2. Water, Stains, and Soap Scum – Oh My!



Your shower is a battlefield, and the opponents are soap scum, mineral deposits, and mold. A sealed natural stone surface is like having a superhero shield protecting your investment.


On the other hand, if you don’t seal it, you’re opening the door to stains and unsightly soap scum buildup. Think about trying to scrub soap scum out of tiny crevices—it’s like cleaning a giant sponge that never dries.

water stain on natural stone tile
without seal natural stone tile wall

3. Mold Loves Moisture



Mold and mildew are like unwanted house guests that never leave, and guess where they love to hang out? Yup, inside the pores of unsealed stone. Natural stone without sealant can trap moisture, providing the perfect breeding ground for mold. Imagine stepping into your shower and seeing black spots creeping up your once pristine tiles. Not cute.

a shower with mold
a shower with mold

What Happens If You Don’t Seal Natural Stone in a Shower?

1. Staining and Discoloration


Unsealed natural stone is a magnet for stains. From your favorite shampoo to the iron in your water, any spill or splash can lead to discoloration that’s impossible to remove. In a worst-case scenario, your beautiful marble could end up looking like a tie-dye project gone wrong.


stained shower wall
stained shower wall without a seal natural stones

2. Efflorescence – The Unwanted Chalky Guest


Ever noticed a white, powdery substance on your stone? That’s called efflorescence, and it happens when water travels through unsealed stone and brings minerals to the surface. Not only is it unattractive, but it can also weaken your stone over time. Sealing creates a barrier that prevents water from moving through the stone and dragging those minerals along for the ride.

efflorescene on shower floor
efflorescene on shower floor because no sealing natural stones

3. Cracks and Structural Damage


Water is sneaky—it can get into the tiniest of cracks and crevices. Over time, repeated exposure to moisture can cause the stone to weaken and even crack. When the water freezes, it expands, further stressing the stone and potentially causing irreversible damage. Nobody wants to turn their luxurious shower into a cracked mess.


cracked tiles on shower wall
cracked tiles on the shower wall

4. Slippery When Wet



One thing people often overlook is that natural stone can become slippery when it absorbs water. Without a proper sealant, your shower could turn into a slip-and-slide disaster waiting to happen. Sealing your stone helps keep the surface less porous and therefore less likely to become dangerously slick.

wet bathroom floor
dangerous wet bathroom floor

It's Time to Seal and Upgrade: Discover the Best Natural Stone Mosaic Tiles in the World

mid century modern flooring with natural green stone tile
Mosaics.co - Handmade green mosaic tiles - New York pattern

1. Flower Handmade Limestone Mosaic Tiles

Let’s start with a showstopper.


The Flower Handmade Limestone Mosaic Tiles are as artistic as they are functional. Available in an array of beautiful colors like black, dusty rose, sage green, and more, this design brings an elegant, whimsical touch to any space.


Whether you’re working with a wet environment like a bathroom or a dry area, this unique design can instantly transform the mood. These mosaic tiles are handcrafted, ensuring each tile is truly one-of-a-kind.


Imagine these as a statement piece in your bathroom or even as a backsplash in your kitchen!

Flower mosaic tiles on shower wall
Sealed natural stone flower mosaic tiles on shower walls

2. Timeless Checkerboard Limestone Mosaic Tiles

Who doesn’t love a classic? The Timeless Checkerboard Limestone Mosaic Tiles live up to their name, offering a traditional design with a modern twist.


These mosaics are carefully handmade, and the attention to detail is evident in every tile. The color combinations are nothing short of spectacular: think burgundy and ivory white, teal blue and hazy yellow, and more.


These tiles fit effortlessly into any contemporary or traditional design space, making them perfect for a bathroom or even an entryway floor.


Pro Tip: Pair these with minimalist fixtures to make the colors pop even more.

checkerboard mosaic tiles with yellow and rose colors
Mosaics.co handmade natural stone mosaic tiles

3. Diamond Mosaic Tiles

Looking for something bold and different? 


The Diamond Mosaic Tiles are a visual treat. While these tiles are technically hexagonal, when installed side by side, they create a mesmerizing large diamond pattern that’s sure to grab attention. 


Whether you’re designing a high-traffic commercial space or revamping your home, this one-of-a-kind design adds an element of sophistication and surprise. These natural stone mosaic tiles are ideal for anyone wanting to make a statement.



Perfect for modern, high-traffic areas, these tiles are as durable as they are striking.

Diamond mosaic tiles on kitchen backsplash
Diamond mosaic tiles on kitchen backsplash
limestone mosaic tile on countertop
Mosaics.co handmade mosaic tile - London Pattern

Why Choose These Natural Stone Mosaic Tiles?

  • DCOF > 0.42 : All of these tiles meet or exceed the DCOF (Dynamic Coefficient of Friction) standard of 0.42, meaning they’re slip-resistant and perfect for wet environments like bathrooms and showers.

  • Thin and Easy to Install : Despite their durability, these tiles have a thin structure that makes installation a breeze without compromising on strength.

  • Built to Last : These tiles aren’t just pretty—they're built to endure. With the ability to withstand heavy foot traffic, they’re perfect for commercial floors, yet versatile enough for residential spaces.

3d wall and floor mosaic tile in a bathroom
3d wall and floor mosaic tile in a bathroom

Conclusion: Don’t Skimp on Sealing

In conclusion, if you don’t seal natural stone in your shower, you’re setting yourself up for a world of problems. From stains and discoloration to mold and cracks, the risks far outweigh the effort it takes to apply a good-quality sealer. Plus, who wants to deal with moldy, cracked stone when you could have a beautiful, long-lasting shower that looks like it belongs in a luxury spa?


So, protect your investment! If you’ve got gorgeous natural stone tiles (maybe even some stunning mosaic tiles like our collection at Mosaics.co ), seal them properly, and maintain them with care. Your future self will thank you every time you step into your pristine, stone-covered sanctuary. And as always, don't forget to seek advice from a professional to ensure the best results for your natural stone installation!

FAQ about Sealing Natural Stone Tile

1-How often should you seal?

Sealing isn’t a one-and-done task. Depending on the type of stone and the level of wear and tear, you’ll want to reseal your shower every 6-12 months. A quick way to test if your sealant is still working is to splash some water on your tiles. If the water beads up, you’re good to go. If it starts soaking in, it’s time to reseal.

2- How to apply sealer on natural stone tile?

Sealing your stone is easy and something you can do yourself! Here’s a quick guide:

  1. Clean the stone thoroughly (nobody wants to seal in dirt).
  2. Apply the sealer using a sponge or brush, making sure to cover all areas.
  3. Let it sit for the recommended time (usually around 15 minutes).
  4. Wipe off any excess sealer and let it cure for 24-48 hours before using the shower.


Gloria

The Author: Gloria Peters

Gloria Peters, a distinguished interior designer and acclaimed writer, boasts over seven years of experience in transforming spaces into captivating masterpieces. Her articles not only showcase her technical prowess but also invite readers on a journey of discovery and appreciation for the artistry behind each design. A luminary in the field, Gloria's work serves as a beacon of inspiration for aspiring designers and homeowners alike, leaving an indelible mark on the world of interior design.



Leave a comment

Please note, comments must be approved before they are published

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.