What is the Width of a Shower Curb? (The Perfect Size)

If you’re the type of person who gets easily irked by water puddles or dreads walking into a wet bathroom, then a good shower curb is a must-have. It keeps the water in the shower where it belongs and saves you the hassle of mopping up the floor after every use.

But how wide should your shower curb be? The recommended minimum width is 36 inches, although you can go as wide as 42 or 48 inches for some extra space. 

The standard height of a shower curb is 2 inches above the top of the drain, which ensures that water from your shower doesn’t spray outside and make a mess of your bathroom.

Fortunately, this guide will explain everything you need to know about shower curbs, why it is necessary, and how to build one.

So, stay with us till the end, and I bet you won’t regret it!

What Is A Shower Curb? What Is Its Purpose?

Let me tell you all about shower curbs. So, when you shower, you know how water can splash out and make your bathroom floor all wet and slippery? 

That’s where a shower curb comes in! It’s a barrier installed at the bottom of your shower to catch any water that tries to escape.

Shower curbs are typically made of waterproof materials like tile or stone and can be customized to fit the dimensions of your shower. They prevent water damage, mold, mildew growth, and slip-and-fall accidents. 

If you’re feeling adventurous, make your shower curb using cement or stone. Just measure carefully and use a waterproofing membrane to keep the water where it belongs. 

Or, if you’re not into DIY, you can purchase a pre-made shower curb tailored to your specific shower dimensions. 

Either way, a shower curb is an essential feature to consider when building or renovating your bathroom.

What Is The Shower Curb’s Height and Width?

The standard height of shower scrub is typically 2 inches above the top of the drain, but don’t stress if you can’t achieve that exact measurement. The important thing is to have a 2-inch drop from where the drain is located to where you step in.

Of course, the height of your shower curb will also depend on your floor type. If you’ve got a slanting floor, you may get away with a shorter curb than the standard level floor requires. It’s all about finding that sweet spot between functionality and style.

As for width, you’ve got some options. A shower curb can range anywhere from 36 inches up to 48 inches wide, depending on the size of your shower. That’s plenty of wiggle room to work with when designing your bathroom.

What Is Shower curb Overhang Size?

The shower curb overhang is crucial in keeping your bathroom dry and safe. Ideally, your overhang should be at least ½ an inch wide as a solid barrier against excess water or a flooded shower.

When it comes to the design of the overhang, the most common choice is the classic 90-degree turn along the edge. However, there are plenty of other options if you’re feeling adventurous.

But don’t forget: while a wider overhang may seem appealing, it can reduce the ease of access and increase the risk of tripping and falling. So, keep the overhang distance reasonable and safe for all who use your shower.

What Is Schluter Curb Size?

If you’re looking for a pre-made shower curb, the Schluter curb might be just what you need. It’s available in three sizes: 38″ x 6″ x 4½” (97 x 15 x 11.5 cm), 48″ x 6″ x 4½” (122 x 15 x 11.5 cm), and 60″ x 6″ x 4½” (152 cm x 15 cm x 11.5 cm), so you can choose the one that fits your shower system best.

Not only is the Schluter curb pre-fabricated, but it’s also already waterproofed for the tile, leaving only the sealing joints to worry about. 

And installing it is a breeze – apply a thin set of mortar to the floor and edge of the shower base and walls using a trowel, then press it firmly into place and check the underside for maximum support and coverage.

Finally, seal the curb to the shower base and wall using waterproofing strips and preformed corners, and voila! You’ve got yourself a solid, waterproof barrier against any excess water. 

Narrow Shower Curb: The Good And The Bad

A narrow shower curb is a shower curb with a smaller width than a standard shower curb. It is usually used in smaller shower spaces or showers with a minimalist design.

The width of a narrow shower curb can vary, but it is typically around 2-3 inches wide compared to the standard width of 4-6 inches.

Here are its upsides and downsides.

The Good

  • Easy to clean as it doesn’t cover a large surface area, making it hassle-free to maintain.
  • It provides privacy and offers a surface to mount shower curtains or doors.
  • Safe for all age groups, it reduces the risk of tripping and getting hurt in the shower.
  • Its narrow design saves space and makes the bathroom look more spacious.

The Bad

  • Since the threshold isn’t as wide, water can still get everywhere, making it difficult to contain.
  • You may have to clean up extra water frequently as a result.
  • The narrow shower curb may have surface joints that can collect mildew and grime if not cleaned properly.

Do You Have To Waterproof A Shower Curb?

If you plan to install a pre-made one-piece shower stall, you don’t have to worry about waterproofing the curb. 

The manufacturer has already got you covered so that you can breathe easily. But if you’re a DIY enthusiast and intend to build and tile your shower from scratch, you must construct your shower curb and waterproof it too.

Use a moisture barrier like a PVC pan liner or sheeting to ensure your shower curb is waterproof. Alternatively, you can go for a liquid moisture barrier that you can paint directly onto the wooden surface of the shower curb.

Another option is to coat the wood with cement and apply a thin layer of liquid moisture. With these tips, you can ensure your shower curb will stay waterproof and avoid any future water damage or mold build-up.

How To Build A Shower Curb? 15 Easy Steps To Follow

Building a shower curb yourself can be a challenging but rewarding DIY project. If you’re up for the challenge, here are 15 steps to follow (including a helpful video at the end of this list):

  • Step 1: Stack two 2X4s on top of each other and cut them to fit the length of your shower entrance. Then, securely screw them to the floor with non-corrosive screws.
  • Step 2: Cover the curb entirely with a waterproof pan liner extending onto the floor and up the walls about 7 or 8 inches. Be careful not to puncture the liner!
  • Step 3: Remove the top half of the drain flange and lay the liner, then replace the bolts afterward.
  • Step 4: Cut out the liner around the drain circularly. The hole should reach the bolts at the bottom of the drain flange.
  • Step 5: Unscrew the 4 bolts from the drain and apply a silicone ring under the liner onto the bottom of the drain flange. Avoid getting any silicone into the bolt holes!
  • Step 6: Press the pan liner onto the silicone ring and gently screw in the top of the drain flange so as not to crack it.
  • Step 7: Set the liner evenly into the corners and against the walls, then secure it with tape.
  • Step 8: At the two corners opposite the curb, take the liner and fold it over onto itself.
  • Step 9: At the edges of the curb, cut the liner vertically where the curb meets the wall, then lay the liner flap over the curb, making sure it’s completely covered.
  • Step 10: Cover the curb with a metal lath and put tape over the edges to prevent it from puncturing the liner.
  • Step 11: Add a layer of mortar or cement onto the curb, about 1 inch thick. Place a straightedge on top and press down firmly to create suction.
  • Step 12: Apply an additional layer of mortar (about ½ inch thick) to the outside of the curb while the straightedge is still on it. Remove any excess mortar with a flat trowel.
  • Step 13: Take a break for an hour to allow time for the mortar to harden.
  • Step 14: After an hour, take your flat trowel and go over the curb again to ensure it matches the height of your shower door. Check that the inside and outside of the curb are parallel.
  • Step 15: Proceed to tile the shower – start with the sides and then do the top of the curb. And voila! You’ve built yourself a custom shower curb!

What Is The Difference Between A Shower Curb And A Threshold?

A shower curb and a threshold may sound similar, but the two have some key differences. Let’s break it down.

A shower curb is a raised barrier that runs along the edge of the shower floor. It is typically made of wood, concrete, or other sturdy materials and is designed to keep water from spilling out of the shower area and onto the bathroom floor. 

Shower curbs are often tiled or covered with a waterproof membrane to provide added protection against water damage.

On the other hand, a threshold is a raised strip of material that runs along the bottom of a doorway or entryway. 

It is designed to provide a smooth transition between two different flooring surfaces and to help keep out drafts, dust, and other debris. 

In a shower, a threshold may be used to separate the shower area from the rest of the bathroom or to provide a barrier between the shower and the bathtub.

Which Is An Excellent Pre-Made Shower Curb?

Creating a shower curb doesn’t have to be a hassle! Save time and get a quality finish by buying a pre-made shower curb to customize for your shower.

This guarantees the best protection against moisture so you can shower without any worries. One excellent option to check out on Amazon is the Duzzy 66-Inch Shower Threshold Water Dam.

Made from 100% waterproof rubber, this shower threshold is easy to cut and clean and can be molded to fit any shower design. It’s perfect for curbless showers or any area where water needs to be contained.

Final Verdict

Regarding home renovation, the bathroom is usually one of the top priorities. Everyone uses the bathroom, and a clean and attractive one improves life. Installing a proper shower curb is one way to add style and interest to your bathroom.

Sure, you could try to tackle the job yourself, but be prepared to spend hours on it. Hiring a professional who can give you a precise and clean installation is much easier and more efficient. Plus, you’ll be able to use your shower in no time.

Having the right shower curb can make a big difference in accessibility and ease of use for everyone in your household. So why not invest in a professional installation and enjoy a beautiful and functional bathroom?

Related: 12 Pebble Shower Floor Pros and Cons You Need To Know

Hey there, I'm Abdul Moeed Shahid, the DIY aficionado and experienced writer. With a wealth of knowledge gained from years of honing my craft, I bring my expertise to the world of DIY and home improvement projects.

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