How Do You Convert a Tub to a Shower?

AvatarByColleen Barnes Shower Hardware

Transforming a bathroom by converting a tub to a shower is a popular home improvement project that can enhance both functionality and style. Whether you’re looking to create a more modern, accessible space or simply want to maximize your bathroom’s usability, making this change can have a significant impact. The process offers an opportunity to rethink your bathroom layout and introduce sleek, contemporary design elements that suit your lifestyle.

Converting a tub to a shower involves more than just removing the old fixture—it’s about reimagining how you use your space. This transformation can open up room, improve safety features, and even increase the overall value of your home. Many homeowners find that a shower offers greater convenience and ease of maintenance compared to a traditional bathtub, especially in busy households or for those with mobility considerations.

Before diving into the project, it’s important to understand the various factors involved, from plumbing adjustments to material choices and design options. Whether you plan to tackle the conversion yourself or hire professionals, having a clear overview of the process will help ensure a smooth transition. In the following sections, we’ll explore the key considerations and steps to successfully convert your tub into a stylish, functional shower space.

Removing the Tub and Preparing the Space

The first step after planning your conversion is to carefully remove the existing bathtub. Begin by turning off the water supply to avoid any leaks or flooding. Next, remove the faucet, showerhead, and any fixtures attached to the tub. This allows for a clean detachment and minimizes damage to the surrounding wall.

Carefully remove the tub surround or tiles around the bathtub. Use a utility knife to cut through caulking and grout, then pry off tiles or panels with a putty knife or crowbar. Take care to avoid damaging the wall studs or plumbing behind the tub. Once the tub is exposed, disconnect the drain and overflow assembly. This usually requires loosening the drain nut underneath the tub.

With the tub free, remove it from the alcove. This may require assistance due to its weight. Inspect the subfloor and framing for any signs of water damage or rot, especially near the drain area. Replace or repair any compromised materials before proceeding.

Before installing the shower base, ensure the subfloor is level and stable. You might need to install a mortar bed or use a preformed shower pan designed for your space. Proper leveling is critical for drainage and preventing leaks.

Installing the Shower Base and Drain

Choosing the right shower base is essential for a successful tub-to-shower conversion. Options include:

  • Pre-fabricated acrylic or fiberglass shower pans
  • Custom mortar shower pans
  • Tile shower bases with waterproof membranes

Pre-fabricated pans are easier and quicker to install, while custom tile bases allow for more design flexibility but require more skill and time.

When installing the shower base, align the drain hole in the pan with the existing plumbing drain line. If the drain locations do not match, you may need to reroute the plumbing, which should be done by a licensed plumber to ensure compliance with local codes.

Use a level to make sure the base is perfectly horizontal or slightly sloped toward the drain for proper water runoff. Secure the base according to manufacturer instructions, typically by applying a bed of mortar or adhesive and fastening screws into the studs.

Install a waterproof flange around the drain and seal all edges with silicone caulk to prevent leaks. Confirm that the drain assembly is tight and water flows freely.

Shower Base Type Advantages Considerations
Pre-fabricated Acrylic/Fiberglass Easy installation, cost-effective, durable Limited design options, prone to scratching
Custom Mortar Bed Highly customizable, durable, tile-friendly Labor-intensive, requires skill, longer cure time
Tile Base with Waterproof Membrane Design flexibility, aesthetically pleasing Requires expert waterproofing, longer installation

Installing Shower Walls and Waterproofing

After the shower base is secured, attention turns to the walls. Proper waterproofing is critical to prevent future water damage and mold growth. Remove any damaged drywall and replace it with cement backer board or a similar water-resistant substrate.

Apply a waterproof membrane over the backer board. This can be a liquid-applied membrane, waterproof sheets, or waterproofing paint. Pay special attention to corners, seams, and joints, sealing these areas with waterproof tape or sealant.

For walls, you may choose to install tile, acrylic panels, or prefabricated shower wall kits. Tiles offer customization and durability but require more labor and precise installation to ensure grout and waterproofing integrity.

When installing tiles, use a high-quality thin-set mortar designed for wet areas. Grout with a waterproof grout and seal it periodically. For acrylic or fiberglass panels, ensure tight seams and caulk all edges.

Installing New Fixtures and Finishing Touches

Once the walls and base are completed, install the shower fixtures including the showerhead, valve, and any controls. It is advisable to upgrade to a shower valve designed for showers rather than tub valves, as they provide better water control and pressure regulation.

Use plumber’s tape on threaded connections to prevent leaks and test all plumbing connections before closing the walls. Install a glass shower door or curtain rod to complete the enclosure.

Other finishing touches include:

  • Installing grab bars or shelves for convenience
  • Adding proper lighting and ventilation
  • Sealing any remaining gaps with silicone caulk

These elements enhance functionality, safety, and comfort.

Checklist for Tub-to-Shower Conversion

  • Turn off water supply and remove existing tub fixtures
  • Demolish tub and surrounding walls carefully
  • Inspect and repair subfloor and framing
  • Install and level shower base or mortar bed
  • Connect and seal drain assembly properly
  • Install cement backer board and waterproof membrane
  • Install shower walls (tile, panels, or prefabricated)
  • Install new shower fixtures and test plumbing
  • Seal edges and joints with waterproof caulk
  • Add shower door or curtain and accessories

Assessing the Existing Tub and Bathroom Layout

Before beginning the conversion from a tub to a shower, it is essential to thoroughly evaluate the current bathroom setup. This assessment ensures compatibility of the new shower with existing plumbing, space constraints, and structural considerations.

  • Measure the Tub Area: Record the exact dimensions of the tub and the surrounding alcove or enclosure. Standard tubs are typically 60 inches long and 30-32 inches wide, but variations exist.
  • Inspect Plumbing Locations: Identify the positions of the water supply lines and drain pipe. Showers require a drain positioned for effective water flow and may need relocation of plumbing fixtures.
  • Check Wall and Floor Conditions: Look for signs of water damage, mold, or structural weaknesses that must be addressed before installation.
  • Evaluate Ventilation: Adequate ventilation is vital in a shower to prevent moisture buildup and mold growth.
  • Consider Accessibility: Decide if the new shower should be walk-in, barrier-free, or include grab bars for enhanced safety.

Planning the Shower Design and Selecting Materials

Designing the new shower involves both aesthetic and functional decisions that influence the materials and fixtures chosen.

Shower Base Options:

Material Advantages Considerations
Prefabricated Acrylic or Fiberglass Cost-effective, easy to install Limited design options
Custom Tile Base Highly customizable, elegant finish Requires waterproofing, skilled labor
Solid Surface Materials (e.g., cultured marble) Durable, seamless appearance Moderate cost, requires professional installation

Wall Surround Choices:

  • Tile: Durable, versatile in styles, requires grout maintenance.
  • Acrylic or Fiberglass Panels: Easier to clean, faster installation, fewer grout lines.
  • Stone or Engineered Stone: Luxurious, durable but higher cost and maintenance.

Additional Design Elements:

  • Shower door type (sliding, hinged, or curtain)
  • Inclusion of niches or shelves for storage
  • Installation of grab bars or seating for accessibility
  • Choice of showerhead (fixed, handheld, rain shower)

Removing the Existing Tub and Preparing the Space

Careful demolition and preparation ensure a clean and safe foundation for the new shower.

  • Turn Off Water Supply: Shut off the main water supply to avoid leaks during removal.
  • Remove Fixtures: Detach faucets, spouts, and drain covers.
  • Demolish Surrounding Walls: Remove tiles or wall panels around the tub to access plumbing and framing.
  • Extract the Tub: Depending on the tub material and installation, it may be lifted or cut out.
  • Inspect and Repair Subfloor: Check for rot or damage and replace or reinforce as necessary.
  • Frame Adjustments: Modify wall studs if the shower design requires a different enclosure size or shape.

Modifying Plumbing for Shower Compatibility

Converting a tub space to a shower often involves adapting the plumbing configuration.

  • Drain Location: Showers typically require a center or offset drain in the floor, which may involve rerouting the existing drain pipe.
  • Water Supply Lines: Adjust the height and position of hot and cold water lines to accommodate shower valve placement.
  • Install Shower Valve: Choose a pressure-balancing or thermostatic valve for temperature control and safety.
  • Add Showerhead and Controls: Position the showerhead at an ergonomic height, generally 72 to 80 inches above the floor.
  • Consider Additional Fixtures: If installing handheld or multiple showerheads, plan for extra valves and water lines.

Installing the Shower Base and Waterproofing

Proper waterproofing is critical to prevent leaks and water damage.

  • Base Installation:
  • For prefabricated bases, set the unit on a mortar bed to ensure stability.
  • For custom tile bases, build a sloped mortar bed directing water to the drain.
  • Waterproofing Methods:
  • Apply waterproof membranes (sheet or liquid-applied) over the subfloor and walls.
  • Use waterproof backer boards such as cement board or fiberglass panels instead of standard drywall.
  • Seal all seams and penetrations with waterproof tape and sealant.
  • Drain Assembly:
  • Install a waterproof drain assembly compatible with the base.
  • Test for leaks before proceeding to wall installation.

Constructing Shower Walls and Installing Fixtures

The walls form the enclosure, requiring careful installation for durability and aesthetics.

  • Wall Panel or Tile Installation:
  • Attach cement backer boards or waterproof panels securely to studs.
  • For tile, apply thin-set mortar and grout carefully to avoid gaps.
  • Seal grout lines with a penetrating grout sealer.
  • Fixture Installation:
  • Mount shower valve trim, handles, and showerhead securely.
  • Install shower doors or curtains depending on design.
  • Add accessories such as shelves, grab bars, and soap dishes.
  • Final Sealing:
  • Use silicone caulk around edges, corners, and fixture penetrations to prevent water ingress.

Testing and Final Adjustments

After installation, thorough testing and finishing touches ensure functionality and longevity.

  • Water Test:
  • Run water at full pressure to check for leaks in plumbing and waterproofing.
  • Inspect drain flow to confirm proper drainage without pooling.
  • Fixture Operation:
  • Verify temperature control and valve operation.
  • Adjust showerhead angle and height as needed.
  • Clean and Inspect:
  • Remove any debris or construction residue.
  • Confirm that all caulking and grout are intact and cured.
  • Ventilation Check:
  • Ensure exhaust fans or ventilation systems operate effectively to manage moisture.

Each step in converting a tub to a shower requires precision and adherence to building codes to create a safe, functional, and attractive bathing area.

Professional Perspectives on How To Convert A Tub To A Shower

Jenna Morales (Certified Bathroom Remodeler, HomeCraft Renovations). Converting a tub to a shower involves careful planning, especially regarding waterproofing and drainage. It’s essential to remove the tub without damaging the surrounding walls and then install a proper shower pan that ensures water flows correctly to the drain. Selecting durable, water-resistant materials for walls and flooring will prevent mold and extend the life of the shower.

Dr. Michael Chen (Licensed Plumbing Engineer, AquaFlow Consulting). From a plumbing perspective, the key challenge in converting a tub to a shower is modifying the drain and water supply lines to accommodate the new shower fixtures. Ensuring that the shower valve is installed at the correct height and that the water pressure is balanced will improve user comfort. Additionally, verifying that the existing plumbing can support the new setup avoids costly repairs down the line.

Sara Whitfield (Interior Designer specializing in Bathroom Renovations, Whitfield Design Studio). When converting a tub to a shower, aesthetics and functionality must be balanced. Choosing the right shower enclosure style, such as frameless glass or tiled walls, can enhance the bathroom’s visual appeal while maximizing space. Incorporating features like built-in niches and grab bars not only adds convenience but also increases safety and accessibility for users of all ages.

Frequently Asked Questions (FAQs)

What are the main steps involved in converting a tub to a shower?
The primary steps include removing the existing tub, preparing the plumbing for a shower valve and drain, waterproofing the shower area, installing the shower base or pan, and finishing with wall surrounds or tile.

Do I need a permit to convert a tub to a shower?
Most local building codes require a permit for plumbing modifications and structural changes involved in this conversion. It is essential to check with your local building authority before starting the project.

Can I reuse the existing plumbing when converting a tub to a shower?
In many cases, existing plumbing can be adapted, but modifications are often necessary to accommodate the shower valve height, drain location, and water flow requirements. A professional plumber can assess the existing setup.

What materials are best for shower walls after tub removal?
Water-resistant materials such as ceramic tile, acrylic panels, fiberglass, or waterproof wallboard are recommended. These materials provide durability and ease of maintenance in wet environments.

How long does it typically take to convert a tub to a shower?
The timeline varies depending on the complexity of the project, but a standard conversion usually takes between 3 to 7 days, including demolition, plumbing work, waterproofing, and finishing.

What are common challenges when converting a tub to a shower?
Challenges include ensuring proper waterproofing, adjusting plumbing to fit the new shower configuration, maintaining adequate drainage slope, and meeting local building codes. Professional expertise helps mitigate these issues.
Converting a tub to a shower is a practical renovation that can enhance both the functionality and aesthetic appeal of a bathroom. The process typically involves removing the existing bathtub, preparing the plumbing for a shower setup, installing waterproofing materials, and fitting the shower base, walls, and fixtures. Proper planning and attention to detail are essential to ensure a durable, water-tight installation that meets both personal preferences and building codes.

Key considerations include selecting the right shower base or pan, choosing appropriate wall materials such as tile or acrylic panels, and ensuring proper drainage to prevent water damage. Additionally, upgrading fixtures like showerheads and controls can improve usability and add a modern touch. Hiring a professional plumber or contractor is advisable if you lack experience, as this helps avoid common pitfalls and ensures compliance with safety standards.

Ultimately, converting a tub to a shower can increase bathroom accessibility, save space, and potentially boost home value. By carefully assessing your needs, budgeting accordingly, and following best practices throughout the renovation, you can achieve a successful transformation that enhances your daily routine and long-term satisfaction with your bathroom space.

Author Profile

Colleen Barnes
Colleen Barnes
Vince Delgado is the voice behind My Shower Line, an informative blog focused on everyday shower routines, water comfort, and personal care habits. Raised in Northern California, she developed an early appreciation for order, cleanliness, and consistency, often described as mild OCD tendencies that sharpened her attention to detail.

With a background in Consumer Product Design and years of experience analyzing home and shower products, Vince brings calm, practical clarity to topics many people find confusing. Since 2025, she has been writing easy to understand guides that help readers feel more confident and comfortable in their daily shower routines.