How To Build a Curbless Shower?

A walk-in curbless shower is a practical and elegant addition to any bathroom, combining safety and elegance in one renovation. The benefits of curbless showers are discussed in this article and how to install one in your home. In your bathroom, a curbless shower eliminates a significant tripping hazard. To assist someone with mobility issues, you might want to learn how to build a curbless shower. You must pay special care to the subfloor preparation to finish this project correctly.

Walk-in showers are replacing bathtubs in residential bathrooms at a faster rate than ever before. Shower detailing is becoming more critical as a result of this transition. It typically leads to better, more attenuated design solutions for an authentic design to our time (also known as modernism). The curbless shower is one of the most gratifying bathrooms features we’ve recently produced. The curb is removed without affecting the functionality of a shower in the right circumstances and with some careful planning.

In the last five years, zero-threshold (or curbless) showers have grown in popularity, but finding an easy way to design and install one in a bathroom remodel can be challenging. In new construction, drains are typically simple, but existing issues may necessitate significant demolition, structural reinforcing, and new drain line rough-in, among other things. The drains remain popular despite the considerable work that is frequently necessary. But what is it about curbless drains that makes them so popular? Because they provide homes with valuable benefits.

Benefits of Curbless Showers

A walk-in shower with no curb runs parallel to the bathroom floor. These shower stalls are wheelchair accessible and provide simple entry for people who cannot quickly enter a bathtub shower or a curbed shower stall. The complexity of installing a curbless walk-in shower is determined by how much your bathroom modifies to allow a booth.

Bathrooms with an open concept are popular because of their elegant style and excellent practicality. While curbless showers are appropriate for all stages of a growing family, they are especially beneficial for people.

Because there is no threshold or curb, the shower space is open to the rest of the bathroom, making it easy to clean and maintain. Tile allows for more design flexibility: use simple, large-format tile for a clean and streamlined aesthetic, or create a unique blend of field and accent tile on the floor or wall without the need for a shower curb. Built-in chairs and benches, inset shelves and niches, low-profile linear drains, heated floors, and even steam showers are possible with curbless showers. They’re even easier to attain now.

The shower curb can lose for a variety of reasons.

A curbless shower creates cleaner bathroom lines:

  • There is less visual clutter.
  • The shower is easier to use.
  • There are fewer nooks and crannies available to clean.
  • The shower is more accessible.

The techniques for accomplishing this differ, and today’s post discusses one, but it’s the one we like best and are creating and building for our current projects.

The Base for a Curbless Walk-In Shower:

The three levels of a shower stall floor make up the shower base. The prepare, pan, and shower floor all work together to keep water from seeping through the shower floor and onto the bathroom floor. If you want to create a curbless walk-in shower, the shower pan and prepare must be installed below the bathroom floor, ensuring that the shower floor is level with the bathroom floor. Shower pans form a watertight seal beneath the stall.

Threshold Water Dam Collapsible Bath Shower Barrier

You can buy manufactured shower pans, which are usually composed of plastics like PVC, or you can make your own with a sheet of PVC or a liquid membrane. Prep materials include masonry and metal, among others.

Read also: How To Remove Rust from Bathtub?

Walls of the Shower:

The materials you choose for curbless walk-in shower walls are ultimately a matter of personal taste. Bathroom walls made of tile do not need to be altered. Moisture trapped in shower stalls, on the other hand, can cause substantial damage to painted surfaces.

Modifying walls by tiling over them and installing readymade shower stall plastic walling are two options. The Tile layover has various surfaces, including wood, plaster, wallboards, and masonry, but not over wallpaper or textiles, which must be removed beforehand. The installation of prefabricated plastic shower walling may need the removal of a portion of an existing wall.

Choosing the Right Flooring:

Choosing the correct flooring for a curbless walk-in shower cubicle may need significant bathroom renovations. You should tile the entire bathroom floor if you want the shower to have a smooth floor line with the rest of the bathroom. Even if you have a waterproof seal on the door, water can seep from a curbless shower every time you open it.

shower floor

To avoid tiling the entire bathroom floor, build the shower floor below the rest of the bathroom floor by removing a part of the floor and setting the shower base deep into it. Alternatively, you can slant the bottom to prevent water from escaping through the door. Both methods necessitate considerable changes to a floor area.

Read also: How To Plug a Bathtub Drain?

Doors and Faucets:

A bathroom supply store, hardware store, department store, or online merchant can provide doors and faucets for a curbless walk-in shower stall. Shower stall doors with no curbs sit on the bathroom floor.

You can also engage a contractor to construct a custom door or wall from the ground up. If your bathroom already has a shower and you want to make it a curbless walk-in, keep the shower spout at its original height and move the valve up the pipe to 48 inches from the floor. If the valve is installed too low, the shower controls may be out of reach.

Showers with Wheelchair Access:

An ADA-compliant conventional roll-in shower must be at least 30 inches wide by 60 inches deep, with a 60-inch aperture at the front of the shower enclosure to accommodate a wheelchair. Install faucets and grab bars at a convenient height for the person who uses a wheelchair who will be using the shower.

Enhanced Entry and Exit Security:

There are several reasons to drive without a curb, but the most crucial is safety. Showers with no curbs provide for easy and safe access and departure. It is essential for small children, the elderly, and persons with limited mobility, but all shower users benefit from these safety features. In a pre-coffee haze, most of us have tripped, slid, or stubbed our toes on the shower floor. Such terrible occurrences are gratefully avoided by a curbless design.

Elegant Style:

Another benefit of curbless showers is their elegant appearance. The curb at the shower’s base provides clean, unbroken lines that are attractive to the eye. The whole effect is one of subtle elegance, elevating your bathroom’s aesthetics.

Curbless Shower Installation:

Curbless showers can be installed using one of two approaches. This section will walk you through both methods in detail, starting with the more common one.

Drain and Base Prefabrication:

Building a prefabricated unit complete with shower pan and drain components is the most frequent DIY technique for installing a curbless walk-in shower. They are designed for failsafe installation and DIY simplicity because they are often marketed as a system with additional materials (e.g., proprietary sealant).

Make sure to study the documentation that comes with the project because it will help you decide how to modify your project to the following broad instructions:

Remove the subfloor. As needed, adjust or align the plumbing. Cut insets into joists if necessary to accommodate a new, recessed subfloor. Subflooring should be recessed (OSB or similar). Fit the base into the recessed subfloor after sealing the drain into the base unit.

Back butter the underside of the prefab unit and apply thin-set to the subfloor. Note: Depending on the type of unit you use, you may need to lay waterproof sheeting before installing the prefabricated shower pan.

Set the unit in position and weigh it down to ensure it is secure (stacks of tiles work well for this). Once the shower pan is in place, tile over it, giving special care to the seal where the slanted shower tile meets the rest of the bathroom floor.

Read also: How To Fix Leaking Shower Without Removing Tiles?

Built-in Shower with Linear Drain:

Building up the shower floor with wedges and constructing a recessed linear drain at the shower’s entrance is a less popular (and more technically challenging) type of curbless shower installation. This method is less common and necessitates more effort. Make the subfloor flush with the bathroom floor by leveling it.

To accommodate your linear drain body, cut an inset with the proper size around the waste pipe. Glue or a no-hub connection, depending on the materials, secures the drain body to the waste pipe. Wedge panels should be cut to size and dry fitted in place before being secured with a thin-set coating with a trowel. Between your recessed drain and the bathroom floor, apply a thin-set and a layer of backer board to the subfloor.

Apply a second coat of small and thin-set over the wedge panels and half of the backer board, ensuring that the waterproofed sheeting is adequately covered. Remove the masking tape on the drain body to reveal the locator pins. Apply a bead of sealant around the drain’s circumference. Place a waterproof sheet over the shower pan and press down towards the drain to allow the locating pins to pass through.

Apply thin-set six inches up the shower walls, glue the sheet edges to the walls, and fold the sheet edges inward. It should Drain extensions and a clamping collar install. Apply sealant to the drain’s sidewalls. The shower should be tiled, grouted, and caulked. Cut the sheeting covering the drain with a razor. Place the spacers and strainer cover in place.


It can take a long time to follow the instructions for installing a curbless shower, and dealing with the flooring can be challenging. Curbless showers are suitable for any home, lifestyle, or décor. Any homeowner can enjoy the advantages of a curbless shower. You’re well on your way to ensuring proper installation now that we’ve covered the most crucial factors to consider when planning a curbless shower. To provide, you’ve found the optimum solution for your area and plumbing setups, contact the manufacturer directly.


What is the best way to slope a curbless shower?

In a curbless walk-in shower, the drain does not have to be in the center. Linear drains can be installed along any edge. The water can be diverted to a side or a corner if the floor is gradually and unnoticeably inclined, 1/8″ to 3/16″ per foot.

How much does a curbless shower cost to install?

On average, a walk-in shower with a curb and door costs between $2,500 and $5,000. Particular adaptations for a curbless shower, according to installers, can cost anywhere from $500 to $700 or more, depending on the tile style and shower size.

Is it worth it to take a shower without a curb?

The main floor bathroom with a curbless shower provides numerous benefits to homeowners who are having difficulty stepping into the tub or shower as they age.

How little can a shower without a curb be?

According to NC State University, most national standards allow curbless showers to be as shallow as 30 inches by 60 inches, but they recommend a minimum depth of 36 inches. A 5-foot-by-5-foot shower will provide enough space for both the wheelchair user and assistance.

Is it true that curbless showers are more expensive?

A curbless shower can set you back anywhere from $500 to $700 extra. People that have the curbless shower installed, on the other hand, believe the slight cost difference is worth it in the long run.

What is the definition of a zero-threshold shower?

A zero-threshold shower is what it sounds like. It eliminates the need to enter a tub or basin. You don’t even need to elevate your leg over a few inches of the threshold. You may walk right in and take your daily shower because there is no barrier between the shower and bathroom floors.


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