How Do You Replace a Bathtub and Surround Step by Step?

AvatarByColleen Barnes Shower Hardware

Replacing a bathtub and its surrounding enclosure can transform the look and feel of your bathroom, turning a dated or damaged space into a fresh, inviting retreat. Whether you’re tackling this project to upgrade your bathroom’s style, improve functionality, or address wear and tear, understanding the process is key to achieving professional results. While it might seem daunting at first, with the right approach and preparation, replacing a bathtub and surround can be a manageable and rewarding home improvement task.

This undertaking involves more than just swapping out fixtures; it requires careful planning, removal of old materials, and precise installation to ensure durability and water-tightness. From selecting the right bathtub style to choosing a surround that complements your bathroom’s design, each decision impacts the final outcome. Additionally, addressing plumbing connections and ensuring proper sealing are critical steps that contribute to a successful replacement.

In the following sections, you’ll gain insight into the essential considerations and general steps involved in replacing a bathtub and surround. Whether you’re a seasoned DIY enthusiast or a homeowner exploring your options, this guide will equip you with the foundational knowledge needed to approach the project with confidence and clarity.

Preparing the Area and Removing the Old Tub and Surround

Begin by shutting off the water supply to the bathroom to prevent any leaks during removal. Drain the bathtub and ensure the area is well-ventilated. Remove any shower doors or curtains to provide unobstructed access to the surround and tub.

Next, take off the trim and caulking around the tub surround. Use a utility knife to carefully cut through any sealant where the surround meets the wall or tub. This step helps prevent damage to the drywall or tile during removal.

To dismantle the surround, locate and remove any screws or fasteners securing it to the wall studs. If the surround is glued or caulked directly onto the wall, use a pry bar and putty knife to gently separate it from the wall surface. Work slowly to avoid damaging the drywall underneath.

When removing the bathtub, disconnect the drain assembly and overflow plate. Use a wrench or drain removal tool to unscrew the drain flange. After disconnecting the plumbing, remove any screws or nails fastening the tub flange to the studs. Carefully tilt and lift the tub out of the alcove, enlisting help if necessary due to the tub’s weight.

Inspecting and Repairing Surrounding Structures

Once the old tub and surround are removed, thoroughly inspect the wall studs, subfloor, and plumbing for any signs of water damage, mold, or rot. Address any issues before proceeding with the installation of the new components.

Check the following elements:

  • Wall studs: Ensure they are straight, secure, and free from rot or mold.
  • Subfloor: Look for soft spots indicating water damage; replace or reinforce as needed.
  • Plumbing: Inspect drain pipes and water supply lines for leaks or corrosion.
  • Electrical components: Confirm that any lighting or ventilation nearby is safe and up to code.

Repair or replace damaged studs or subfloor sections. Apply a mold-resistant primer or treatment to the affected areas to prevent future issues. Use shims to level the subfloor if necessary, ensuring the new bathtub will sit evenly.

Installing the New Bathtub and Surround

Position the new bathtub into the alcove to check the fit. The tub should fit snugly without forcing it into place. Use a level to ensure it sits flat on the floor and adjust with shims if needed.

Secure the tub to the wall studs with screws through the flange, typically every 12 to 16 inches. Be careful not to overtighten, as this can crack the tub material. Reconnect the drain assembly and overflow plate, ensuring all connections are watertight.

For the surround, follow the manufacturer’s instructions closely. Most surrounds come in panels that snap or screw together. Begin at the back wall, working outward to the sides. Use a waterproof adhesive or construction adhesive recommended for bathroom use to bond the surround panels to the wall studs.

Seal all joints and edges with a high-quality silicone caulk designed for bathrooms to prevent water infiltration. Pay special attention to the corners and where the surround meets the tub.

Finishing Touches and Testing

After installation, reinstall any trim pieces or shower doors. Allow adhesives and caulking to cure fully according to product specifications before using the tub.

Test the plumbing connections by running water into the tub and checking for leaks around the drain and overflow areas. Inspect the surrounding walls and floor for any signs of water seepage.

Maintain proper ventilation in the bathroom to reduce moisture buildup and prolong the life of your new bathtub and surround.

Step Tools/Materials Needed Tips
Remove old tub and surround Utility knife, pry bar, screwdriver, wrench Work slowly to avoid drywall damage
Inspect and repair structures Level, mold treatment, replacement lumber Address water damage promptly
Install new tub Level, shims, screws, wrench Check fit before securing
Install surround Adhesive, caulk, caulk gun, screws Seal all edges thoroughly
Test and finish Water supply, silicone caulk Allow full curing time

Preparing for the Bathtub and Surround Replacement

Before beginning the removal and replacement process, thorough preparation is essential to ensure a smooth project flow and prevent damage to surrounding areas.

Start by gathering all necessary tools and materials. This will typically include a utility knife, pry bar, screwdriver set, adjustable wrench, caulk remover, safety glasses, gloves, and a dust mask. For the replacement, have your new bathtub, surround panels or tiles, plumbing fixtures, waterproof backer board, and appropriate sealants ready.

Next, turn off the water supply to the bathroom. Locate the main shut-off valve or individual shut-offs for the bathtub faucet to prevent any accidental leaks during removal.

  • Remove all items around the bathtub area, including shower curtains, rugs, and toiletries.
  • Protect flooring with drop cloths or plastic sheeting to catch debris and prevent scratches.
  • Ensure adequate ventilation by opening windows or running an exhaust fan, especially when using chemical caulk removers or adhesives.
  • Check for any electrical outlets or wiring near the tub area and turn off power if necessary to avoid hazards.

Removing the Existing Bathtub and Surround

Careful removal of the existing bathtub and surround is critical to avoid damaging plumbing or structural elements.

  1. Detach Fixtures and Hardware: Remove faucet handles, spouts, showerheads, and any trim pieces using the appropriate tools.
  2. Cut Through Sealants: Use a utility knife to slice through the caulking along the edges of the surround and between the tub and wall.
  3. Remove Surround Panels: If the surround is a prefabricated unit, gently pry it away from the wall, starting at a corner. For tile surrounds, carefully chip away grout and tiles with a chisel and hammer.
  4. Disconnect Plumbing: Loosen and disconnect the drain assembly and overflow pipe. Have a bucket ready to catch residual water.
  5. Detach Tub from Wall and Floor: Locate and remove any screws or nails securing the tub flange to the studs or floor. Use a pry bar to carefully lift and remove the tub from its position.

Dispose of the old materials in accordance with local regulations. Inspect the exposed wall studs and floor for signs of water damage or mold, and repair as necessary before proceeding.

Installing the New Bathtub

Accurate installation of the new bathtub ensures durability and proper function. Follow these steps:

Step Description Tips
Position Tub Place the new bathtub into the alcove or designated space to check fit. Use shims to level the tub if the floor is uneven.
Secure Tub Attach the tub flange to the wall studs with corrosion-resistant screws. Ensure the tub is firmly anchored but avoid overtightening screws which can crack the tub.
Connect Drain and Overflow Install the drain assembly and overflow pipe, sealing connections with plumber’s putty or appropriate sealant. Test for leaks by filling the tub partially with water before completing surround installation.
Check Level and Adjust Confirm the tub is level in all directions and adjust shims if needed. Use a carpenter’s level and re-check after securing plumbing.

Installing the Bathtub Surround

The method for installing a bathtub surround depends on the material chosen—whether acrylic panels, fiberglass, or tile. Below are professional guidelines for common surround types:

Prefabricated Panels or Acrylic Surrounds

  • Ensure wall studs are plumb and install waterproof backer board if required.
  • Dry-fit panels to verify alignment and cut panels as needed with a fine-tooth saw or utility knife.
  • Apply a waterproof adhesive to the back of the panels and press firmly onto the wall.
  • Secure panels at edges with screws or clips according to manufacturer instructions.
  • Seal all joints, corners, and edges with a high-quality silicone caulk designed for bathrooms.

Tile Surrounds

  • Install cement backer board over studs using corrosion-resistant screws, ensuring seams are taped and sealed.
  • Apply waterproofing membrane or liquid waterproofing to the backer board surface.
  • Use thin-set mortar to set tiles starting from the bottom center and working outward and upward.
  • Allow mortar to cure, then apply grout between tiles and seal grout lines once dry.
  • Finish by caulking all edges where the tile meets the tub and corners to prevent water infiltration.

Finalizing the Installation

Completing the installation requires careful finishing touches to ensure a professional appearance and water-tight seals.

  • Reinstall faucets, spouts, showerheads, and any trim pieces removed earlier.
  • Apply a continuous bead of mildew-resistant silicone caulk around the tub perimeter and along all edges of the surround.
  • Remove protective coverings from

    Professional Insights on How To Replace A Bathtub And Surround

    James Caldwell (Certified Plumbing Contractor, Caldwell Home Services). When replacing a bathtub and surround, it is crucial to first ensure that all plumbing connections are properly shut off and inspected for leaks. Removing the old tub carefully helps preserve the existing water lines, reducing the risk of costly repairs. Additionally, selecting a surround material that complements the bathroom’s moisture levels and ventilation will extend the lifespan of the installation.

    Maria Lopez (Interior Designer and Bathroom Renovation Specialist, Luxe Bath Interiors). The key to a successful bathtub and surround replacement lies in meticulous measurement and planning. Accurate dimensions prevent costly mistakes during installation. I recommend choosing materials that are both aesthetically pleasing and durable, such as acrylic or fiberglass surrounds, which offer ease of maintenance and a modern look. Proper sealing and caulking are essential to avoid water damage over time.

    Dr. Ethan Marshall (Structural Engineer, Residential Building Consultants). From a structural perspective, it is important to assess the subfloor and wall framing before installing a new bathtub and surround. Water damage or rot can compromise the integrity of these components, so replacement or reinforcement may be necessary. Ensuring the surround is securely anchored and the tub is level will prevent future issues such as leaks, mold growth, and structural deterioration.

    Frequently Asked Questions (FAQs)

    What tools are necessary to replace a bathtub and surround?
    Essential tools include a utility knife, pry bar, adjustable wrench, screwdriver set, caulking gun, level, tape measure, and a drill. Additionally, safety gear such as gloves and eye protection is recommended.

    How long does it typically take to replace a bathtub and surround?
    The process usually takes two to three days, depending on the complexity of the installation and whether any plumbing or structural repairs are needed.

    Can I replace a bathtub and surround myself, or should I hire a professional?
    While experienced DIYers can undertake the project, hiring a professional ensures proper installation, especially when dealing with plumbing connections and waterproofing.

    What are the common materials used for bathtub surrounds?
    Popular materials include acrylic, fiberglass, tile, and solid surface composites. Each offers different durability, maintenance requirements, and aesthetic options.

    Do I need to update plumbing when replacing a bathtub and surround?
    Plumbing updates are often necessary if the new bathtub differs in size or configuration. It is important to inspect and modify plumbing to prevent leaks and ensure proper drainage.

    How do I ensure the new bathtub and surround are properly sealed?
    Use high-quality waterproof caulk around edges and joints, ensure the surround panels fit tightly, and verify that all seams are sealed to prevent water infiltration and mold growth.
    Replacing a bathtub and surround is a multifaceted project that requires careful planning, precise measurements, and attention to detail. The process involves removing the existing tub and surround, preparing the plumbing and wall surfaces, and installing the new fixtures securely. Proper sealing and waterproofing are critical to prevent future water damage and ensure the longevity of the installation.

    Understanding the types of bathtubs and surrounds available, as well as selecting materials that suit both the bathroom’s style and functional requirements, is essential. Additionally, following manufacturer instructions and local building codes guarantees a safe and compliant installation. Taking the time to address any underlying issues, such as damaged subflooring or mold, will contribute to a successful replacement and a durable finished product.

    Ultimately, while replacing a bathtub and surround can be a challenging undertaking, thorough preparation and methodical execution lead to a refreshed bathroom space that enhances both aesthetics and usability. Engaging professional assistance when necessary can ensure the project meets quality standards and avoids costly mistakes. With the right approach, homeowners can achieve a seamless and lasting bathroom upgrade.

    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.