Is Kerdi Niche Waterproof? Exploring the Waterproofing Abilities of Kerdi Niche

If you’re undergoing a bathroom renovation, then you’re probably looking for good options for shower niches. One such option that’s gained popularity in recent times is the Kerdi niche, and the big question in everyone’s minds is: is Kerdi niche waterproof? This is a legitimate concern since a shower niche that isn’t waterproof can lead to a variety of problems such as leaks, mold, and mildew.

To put everyone’s minds at ease, yes, the Kerdi niche is indeed waterproof. You can be sure of this because the Kerdi membrane that’s used to construct the niche is designed specifically for this purpose. This waterproofing system seals the area around the niche, making sure that none of the shower water can reach the interior wall cavity. Additionally, the Kerdi niche features a pre-sloped surface that makes sure that water drains outwards.

Having a waterproof shower niche is crucial to your bathroom’s health and longevity. It provides a seamless, elegant look that everyone desires, and it also provides a practical storage solution. The Kerdi niche, backed by Schluter’s years of experience in waterproofing systems, ensures that you get the best of both worlds: a stunning niche that’s functional and long-lasting. So, if you’re planning your next bathroom renovation, the Kerdi niche may be a worthwhile investment for you.

Kerdi Board Niche Installation

If you’re planning to remodel your shower, consider installing a Kerdi Board niche. The Kerdi Board niche is a waterproof shelving solution for your shower, and it can help you save space while enhancing the appearance of your bathroom. Here’s how to install a Kerdi Board niche:

  • Step 1: Determine the location of the niche. You’ll want to pick a spot that’s easy to reach and not obstructed by other fixtures in your shower.
  • Step 2: Measure the dimensions of the niche and mark them on the wall. The Kerdi Board niche comes in different sizes, so make sure to choose one that fits your needs.
  • Step 3: Cut an opening in the wall using a jigsaw or reciprocating saw. Make sure to follow the dimensions you’ve marked to avoid any mistakes.

Now that you have the opening for the Kerdi Board niche, it’s time to install it properly:

  • Step 1: Apply Kerdi Fix to the back of the niche and press it firmly into place. Make sure it’s level and plumb, and adjust as necessary.
  • Step 2: Apply Kerdi Band around the edges of the niche to ensure a waterproof seal. Make sure to overlap the corners for added protection.
  • Step 3: Apply another layer of Kerdi Fix on top of the Kerdi Band, and use a trowel to smooth it out. Let it dry for at least 24 hours before using the shower.

Tips for Installing Kerdi Board Niche

Installing a Kerdi Board niche is a relatively easy process, but there are a few things to keep in mind to ensure a successful installation:

  • Measure twice, cut once: Make sure to measure the dimensions of the niche accurately before cutting the wall. A mistake can be costly and time-consuming to fix.
  • Use the right tools: Cutting the wall requires a jigsaw or reciprocating saw, and installing the niche requires a trowel. Make sure you have the right equipment before starting the project.
  • Follow the manufacturer’s instructions: Kerdi Board niche installation instructions may vary depending on the model and size, so make sure to read the manual before starting the installation.

Kerdi Board Niche Dimensions

The Kerdi Board niche comes in different sizes to fit your shower needs. Here are some popular dimensions:

Niche Size Length (in.) Width (in.) Depth (in.)
Small 12 6 3.5
Medium 12 12 3.5
Large 12 20 3.5

Make sure to pick a Kerdi Board niche size that fits your needs and your shower design. With proper installation, the Kerdi Board niche can be a great addition to your bathroom.

Waterproofing Shower Niches

When remodeling or building a new shower, it’s important to make sure that all parts of the shower are waterproofed properly. One of the often overlooked areas is the shower niche. A shower niche is a wall recess that holds shampoo, soap and other toiletries. It can be made of various materials including ceramic tile, natural stone, or quartz. Whether it’s a new bathroom or an existing one, waterproofing shower niches are a must.

  • Choose your waterproofing system. There are many products available for waterproofing shower niches including paint-on waterproofing membranes, sheet waterproofing membranes, and shower niche pre-fabricated kits. Schluter Systems offers Kerdi-Board and Kerdi waterproofing systems specifically designed for shower installation.
  • Prepare the shower niche. Make sure the niche is clean, dry, and free from any debris. Remove any old caulking or sealant from the joint between the niche and surrounding substrate. Sand any rough edges or surfaces in the niche.
  • Apply waterproofing membrane. Cut the waterproofing membrane to the size of the niche and apply it to the niche and surrounding area. There should be a minimum of 2 inches of overlap between the wall and waterproofing membrane. Apply thinset mortar to the membrane and allow it to dry.

Kerdi Niche Waterproofing System

Kerdi Niche is an all-in-one prefabricated shower niche that features an integrated waterproofing membrane. The niche is made of polystyrene foam with a cementitious coating that provides a strong and stable substrate for tile installation. The niche is available in various sizes, has a square shape and can be installed in both vertical and horizontal orientations.

The Kerdi waterproofing system is designed to work with the Kerdi Niche and includes Kerdi-Board, a waterproof substrate which can be used in showers and other wet areas of the bathroom. The system can be installed with prefabricated Kerdi corners and seams which help to ensure that the system is water-tight and easy to install.


Waterproofing a shower niche is crucial to prevent water damage which can lead to costly repairs. There are various products available for waterproofing shower niches but it’s important to choose the right system for your specific project. The Kerdi waterproofing system offers an easy to install and reliable solution for waterproofing shower niches. It’s always best to consult a professional to ensure that the shower is properly waterproofed and meets local building codes.

Pros Cons
Easy to install Slightly more expensive compared to other systems
All-in-one solution, no guesswork Not suitable for all shower niches sizes
Efficient use of space

Overall, the Kerdi waterproofing system offers an effective and efficient solution for waterproofing shower niches and is a great choice for any bathroom renovation or new construction project.

Schluter Kerdi Shower System

The Schluter Kerdi Shower System is a top-of-the-line waterproofing system that provides an ideal solution for any shower installation. It offers a complete, fully-bonded waterproofing solution that is backed by over 40 years of experience in the industry. One of the most important components of the Schluter Kerdi Shower System is the Kerdi niche, a pre-fabricated, waterproof niche that is designed to provide a secure and waterproof location for storing showering essentials.

  • What is a Kerdi Niche? – A Kerdi niche is a pre-fabricated, waterproof, and fully-sealed niche that is designed to provide a secure and waterproof location for storing showering essentials such as soap and shampoo bottles. It is an innovative solution that eliminates the need for building custom niches onsite, which can be time-consuming, messy, and prone to leaks.
  • Is Kerdi Niche Waterproof? – Yes, a Kerdi niche is completely waterproof and designed to keep moisture out. It is constructed using the same high-quality materials as the rest of the Schluter Kerdi Shower System and is guaranteed to provide a secure and waterproof solution for years to come.
  • How is the Kerdi niche installed? – The Kerdi niche is installed using the same installation process as the rest of the Schluter Kerdi Shower System. It is fully integrated into the system and is designed to be a seamless and easy-to-install component of the overall system.

In addition to the Kerdi niche, the Schluter Kerdi Shower System offers a wide range of other innovative and high-quality components that provide a complete waterproofing solution for any shower installation. From the Kerdi waterproofing membrane to the Kerdi shower drain, the Schluter Kerdi Shower System is the ultimate solution for any homeowner or contractor looking for a top-of-the-line, high-quality, and reliable waterproofing system.

Benefits of the Schluter Kerdi Shower System
1. Fully-bonded waterproofing solution
2. Complete range of components for any shower installation
3. Pre-fabricated, waterproof Kerdi niche for secure storage
4. Over 40 years of experience and expertise in waterproofing technology

Overall, the Schluter Kerdi Shower System is the ultimate solution for anyone looking for a top-of-the-line, high-quality, and reliable waterproofing system for their shower installation. Whether you are a homeowner or a contractor, the Schluter Kerdi Shower System is the ideal choice for providing a secure, waterproof, and long-lasting solution for any shower installation.

Tips for Shower Waterproofing

Proper waterproofing is essential when it comes to shower installations. Without it, any water that seeps through the tiles and grout can cause significant damage to your shower walls and floors. Waterproofing is also essential for preventing any mold and mildew growth. One of the materials you can use for waterproofing is Kerdi niche. Here, we will discuss if Kerdi niche is waterproof and other tips for shower waterproofing.

Is Kerdi Niche Waterproof?

Kerdi is a waterproof membrane that is designed to protect shower and bathtub surrounds from moisture. Kerdi niche, a pre-fabricated niche that is ready to tile, is also waterproof. It is made from the same Kerdi material as the waterproofing membrane. The niche is also designed to slot into the wall, which blocks any water from seeping through the tiles and grout.

Tips for Shower Waterproofing

  • Start with a clean slate: Before waterproofing, make sure that the area is clean and free from dirt and grime.
  • Choose the right materials: Consider using waterproofing materials such as Kerdi membrane, cement board, and waterproof grout and caulk.
  • Apply waterproofing products correctly: Follow the manufacturer’s directions carefully when applying waterproofing products to ensure proper installation and protection against moisture.

Additional Tips

Aside from using Kerdi niche and following the tips mentioned above, here are additional tips for effective shower waterproofing:

Use the right adhesive: Choose the right adhesive for the tile you will use. For instance, a thinset mortar would work well with ceramic tiles, while an epoxy adhesive would work well with glass tiles.

Avoid creating penetrations: Avoid making any unnecessary openings on the waterproofing membrane, such as holes or pipes, that can cause water to seep through.

Consider using waterproof lighting: If you plan on installing lighting in your shower, make sure to choose waterproof lighting to avoid any damage to your waterproofing membrane and tiles.

Materials to Avoid for Shower Waterproofing Reasons to Avoid Them
Regular drywall It is not designed for moisture-prone areas like showers and will get damaged easily.
Vinyl wallpaper It is not waterproof and can trap moisture, leading to mold and mildew growth.
Porous tiles These tiles allow moisture to pass through them and can lead to water damage to the walls behind them.

Proper shower waterproofing is crucial for preventing water damage and promoting a healthy bathroom environment. By using the right materials, following the tips mentioned above, and avoiding the wrong ones, you can ensure that your shower is waterproofed and protected from moisture.

How to Seal Shower Niches

When it comes to installing shower niches, one of the most important considerations is ensuring they are properly sealed to prevent water damage. In this article, we will discuss the effectiveness of Kerdi niches, and provide a step-by-step guide on how to seal your shower niches to ensure they stay waterproof.

Is Kerdi Niche Waterproof?

One of the most popular options for shower niches is the Kerdi niche. These niches are made of foam and are designed to be tiled over for a seamless look. The question is, are Kerdi niches waterproof? The answer is yes, but only if they are properly installed and sealed. Kerdi niches come with pre-made seams and corners that can be used to create a waterproof barrier around the niche. However, if these seams are not properly sealed, water can still seep in and cause damage to the structure behind the tiles.

Steps to Seal Your Shower Niches

  • Clean the niche thoroughly, removing any debris, dust, or grime that may affect the sealing.
  • Apply a coat of waterproofing membrane to the entire niche and the surrounding area. Be sure to follow the manufacturer’s instructions closely.
  • Wait for the waterproofing to dry completely before applying a second coat. Typically, this will take around 24 hours.
  • Cut strips of Kerdi tape to the appropriate lengths and use them to seal the seams and corners of the niche. Press the tape firmly into place to ensure a tight seal.
  • Apply another coat of waterproofing membrane over the Kerdi tape. Again, be sure to follow the manufacturer’s instructions carefully and wait for the waterproofing to dry completely before moving on to the next step.
  • Once the final coat of waterproofing is dry, you can tile over the Kerdi niche to create a seamless look in your shower.


Properly sealing your shower niches is essential to preventing water damage. While Kerdi niches are waterproof, they must be installed and sealed correctly to ensure the water stays where it belongs. By following the steps outlined in this article, you can be confident that your shower niches will stay water-free and look great for years to come.

Pros Cons
Easy to install Expensive compared to other options
Waterproof when sealed correctly Not customizable
Eliminates the need for a traditional corner shelf Can be difficult to retrofit into an existing shower

In conclusion, while Kerdi niches can be more expensive than some other options, their ease of installation and waterproofing capabilities make them a great choice for homeowners looking for a durable and attractive solution for their shower niches.

Comparing waterproofing methods for shower niches

Choosing the right waterproofing method for your shower niche is essential for ensuring that your bathroom stays moisture-free and mold-free. In this article, we will compare the most popular methods for waterproofing shower niches.

Waterproofing membranes

  • Waterproofing membranes are a popular choice for shower niches because they are easy to install and provide a reliable barrier against water and moisture.
  • There are two types of waterproofing membranes: sheet membranes and liquid membranes. Sheet membranes are easy to install and provide a consistent barrier. Liquid membranes are more flexible and can be applied to irregular surfaces.
  • Popular brands of waterproofing membranes include Schluter Systems, RedGard, and AquaDefense.

Kerdi membrane

Kerdi is a specific type of waterproofing membrane that is made by Schluter Systems. It is a sheet membrane that is made from a pliable polyethylene material. Kerdi has become a very popular choice for waterproofing shower niches because it is easy to use and provides excellent waterproofing protection.

Kerdi has several advantages over other waterproofing membranes:

  • It is easy to install because it can be cut to fit any size or shape.
  • It is resistant to mold and mildew growth.
  • It can be used on both walls and floors.

However, some users have reported concerns about the Kerdi membrane’s waterproofing abilities when used in shower niches. While the Kerdi membrane is highly effective at preventing water penetration, it is not completely waterproof on its own. Therefore, it is important to ensure that the seam between the tile and the Kerdi membrane is properly sealed.

Cement boards

Cement boards are a popular choice for shower niches because they offer excellent waterproofing protection and are relatively easy to install. Cement boards are made from a mixture of cement and fiber and are highly resistant to water and moisture.

However, cement boards can be difficult to install if your shower niche is an irregular shape. They are also heavier than other waterproofing materials, which can make them difficult to handle.

Comparing waterproofing methods

Waterproofing Method Advantages Disadvantages
Waterproofing Membranes Reliable barrier against water and moisture, easy to install Can be expensive, difficult to install on irregular surfaces
Kerdi Membrane Easy to install, resistant to mold and mildew growth, can be used on both walls and floors May not be completely waterproof on its own
Cement Boards Excellent waterproofing protection, easy to install Difficult to install on irregular surfaces, heavy and difficult to handle

When comparing waterproofing methods for your shower niche, it is important to consider factors such as ease of installation, waterproofing abilities, and resistance to mold and mildew growth. Each method has its advantages and disadvantages, so it is up to you to choose the one that best fits your needs and budget.

The Importance of Waterproofing in Bathroom Renovations

Waterproofing is a crucial part of any bathroom renovation project. The bathroom is one of the most used and moisture-prone areas of a home, so it is important to ensure that it is properly waterproofed. Not only does waterproofing prevent water damage, but it also prevents potential health hazards caused by mold and mildew growth.

Benefits of Waterproofing

  • Prevents water damage
  • Prevents mold and mildew growth
  • Increases the lifespan of bathroom surfaces

Types of Waterproofing

There are various types of waterproofing methods available for bathrooms, such as:

1. Kerdi waterproofing membrane system – This system involves using a waterproof membrane to cover and protect bathroom surfaces.

2. Cementitious waterproofing – This involves applying a cement-like coating to bathroom surfaces.

3. Liquid waterproofing – This involves applying a liquid waterproofing agent to bathroom surfaces.

4. Sheet membrane waterproofing – This involves using a sheet membrane to waterproof bathroom surfaces.

Kerdi Niche Waterproofing

Kerdi Niche is a pre-fabricated niche made by Schluter Systems. It is designed to be used in conjunction with the Kerdi waterproofing membrane system to provide a fully waterproof and mold-resistant storage area for your shower or bathroom.

Features of Kerdi Niche Waterproofing
Pre-fabricated, eliminating the need for on-site assembly
Easily integrated into tile or stone surfaces
Designed to be waterproof and mold-resistant
Available in various sizes and configurations to meet your needs

Overall, waterproofing is a necessary step in any bathroom renovation project. It not only protects your investment but also ensures the safety and health of your family. With various waterproofing methods available, it is important to choose the right one for your specific needs. Consider Kerdi Niche for a fully waterproof and mold-resistant storage area in your bathroom.

FAQs about Is Kerdi Niche Waterproof

1. Is Kerdi Niche truly waterproof?

Yes, Kerdi Niche is considered completely waterproof. It is designed to keep water from penetrating the area behind the wall, ensuring that there is no damage or decay behind your tiles.

2. Can Kerdi Niche remain waterproof even after years of use?

Yes, Kerdi Niche waterproofing properties can last for many years of use, provided that it is installed correctly. This depends on the proper application of the Kerdi membrane, Kerdi Band tape, and Kerdi Fix waterproofing sealant.

3. Can I install Kerdi Niche myself?

Yes, it is possible to install Kerdi Niche yourself if you have the appropriate tools and knowledge. However, for the best results, it is recommended that you have a professional install the product.

4. Does Kerdi Niche require maintenance to remain waterproof?

No, Kerdi Niche is very low maintenance and does not require special attention to remain waterproof. You may need to wipe down the surface from time to time to prevent the buildup of soap residue.

5. Is Kerdi Niche suitable for all types of tiles?

Yes, Kerdi Niche is suitable for all types of tiles, whether they are porcelain, ceramic, or natural stone. Installers can cut the tile opening to fit the shape of your tiles.

6. Will Kerdi Niche prevent mold growth?

Yes, Kerdi Niche’s waterproof properties help prevent mold growth behind the wall, creating a healthy environment for your bathroom.

7. How does Kerdi Niche compare to other waterproof products in the market?

Kerdi Niche is regarded as one of the industry’s leading waterproof products, proven to prevent leaks and protect against water damage. It is widely used by professionals in the industry.

Closing Thoughts

Thank you for reading about Kerdi Niche’s waterproofing properties. Whether you are a homeowner or an installer, make sure to follow the best practices to make the most out of this product. Kerdi Niche is a reliable and low maintenance solution for any bathroom renovations. Please visit us again for more articles and products that cater to your home improvement needs.