How to Install a Bathtub Surround [Complete DIY Guide]

Are you tired of your outdated bathroom walls? Ready to transform your bathing space without breaking the bank? Installing a bathtub surround is one of the most impactful DIY bathroom projects you can tackle, and I’m here to walk you through every step of the process. With the right tools, some patience, and this comprehensive guide, you’ll be enjoying your new bathtub surround in no time!

Understanding Bathtub Surrounds

Before we dive into the installation process, let’s make sure we’re on the same page about what a bathtub surround actually is. A bathtub surround is the waterproof wall system that encases your tub, protecting the walls from water damage while providing an attractive, easy-to-clean surface.

Different Types of Bathtub Surrounds

Choosing the right surround material is your first important decision:

• One-piece surrounds: These come as a single, seamless unit that covers all three walls. They offer the best water protection because there are no seams, but they can be challenging to get through doorways and into your bathroom.
• Three-piece surrounds: The most common option, these come as separate panels for each wall. They’re easier to transport and install but require proper sealing at the seams.
• Five-piece surrounds: These include the three wall panels plus two corner panels, offering more flexibility for custom installations.

Materials vary widely too:

• Fiberglass: Lightweight and affordable but less durable
• Acrylic: More durable than fiberglass with better aesthetics
• Composite: Combines materials for durability and design options
• Cultured marble: High-end look with more weight and cost
• PVC/plastic: Budget-friendly and very easy to clean

Benefits of Installing a Bathtub Surround

Why go through the effort of installing a surround? Here’s why thousands of homeowners take on this project every year:

• Water protection: Prevents moisture damage to your walls and substructure
• Easy cleaning: No more scrubbing grout lines like with tile
• Cost-effective: Much less expensive than tile or stone alternatives
• Quick installation: Can be completed in a weekend by most DIYers
• Modern appearance: Instantly updates the look of your bathroom

Preparation Before Installation

Success in any DIY project starts with proper preparation. For a bathtub surround, this means gathering your tools, taking accurate measurements, and preparing your space.

Required Tools and Materials

Let’s get everything ready before we start:

Tools:

• Tape measure
• Level (preferably 4-foot)
• Caulking gun
• Utility knife
• Jigsaw or circular saw
• Drill with hole saw attachments
• Adhesive trowel
• Surround kit screws (if required by manufacturer)
• Sandpaper (80-120 grit)

Materials:

• Bathtub surround kit
• Construction adhesive (specifically for surrounds)
• Silicone caulk (bathroom/kitchen grade)
• Waterproof wall board (if replacing wall material)
• Shims
• Painter’s tape
• Cleaning supplies
• Rubbing alcohol

Measuring Your Bathtub Area

Accurate measurements are crucial for a successful installation:

1. Measure the width of each wall from corner to corner at the top of the tub
2. Measure the height from the top of the tub to where you want the surround to end
3. Note the locations of all fixtures, including faucets, shower heads, and handles
4. Measure the location and size of any windows in the surround area
5. Check if your walls are square using a carpenter’s square

Pro tip: Add these measurements to a sketch and take photos of your bathroom before shopping for your surround kit. This ensures you get the right size and configuration for your space.

Removing the Old Surround (If Applicable)

If you’re replacing an existing surround:

1. Turn off the water supply to your bathroom
2. Remove caulking around the old surround using a utility knife
3. Unscrew any fixtures (showerhead, handles, etc.)
4. Pry the old surround away from the wall, starting at the top edges
5. Remove any adhesive residue from the walls

If you’re dealing with old tile:

1. Use a hammer and chisel to carefully remove tiles
2. Inspect the wall board behind the tiles for water damage
3. If damaged, you’ll need to replace sections of the wall board before installing the new surround

Step-by-Step Installation Guide

Now for the main event! Let’s walk through the installation process from start to finish.

Preparing the Wall Surface

The foundation of your installation is proper wall preparation.

Repairing Damaged Areas

1. Remove any damaged drywall or wall material
2. Replace with moisture-resistant greenboard or cement board
3. Secure new wall material with appropriate screws
4. Tape and mud seams between boards
5. Allow all patches to dry completely (usually 24 hours)

Remember: Regular drywall is not suitable for tub surrounds! Always use moisture-resistant materials.

Creating a Moisture Barrier

Even with a perfectly installed surround, adding a moisture barrier provides extra protection:

1. Clean walls thoroughly with rubbing alcohol to remove any dust or oils
2. Apply waterproofing membrane or paint according to manufacturer instructions
3. Pay special attention to seams and corners
4. Allow to dry completely before moving to the next step

Cutting and Fitting the Surround Panels

Now comes the precision work:

1. Carefully unpack your surround panels and lay them out
2. Check for any damage or defects before proceeding
3. Do a dry fit by holding each panel in place to confirm measurements
4. Mark all cutouts for plumbing fixtures using a pencil
5. Use a hole saw for round openings and a jigsaw for larger cutouts
6. Cut holes approximately 1/4 inch larger than the actual fixture to allow for adjustments
7. Sand any rough edges smooth

Cutting tip: Always drill pilot holes before using a jigsaw, and cut from the front side of acrylic or fiberglass surrounds to prevent chipping.

Applying Adhesive and Securing Panels

Time to make it permanent:

1. Apply construction adhesive to the back of the panels in a zigzag pattern
2. Be generous along the edges and around any cutouts
3. Press the back panel into place first, ensuring it’s level and plumb
4. Use shims temporarily if needed to keep panel aligned
5. Install side panels next, aligning them carefully with the back panel
6. Some systems require screws at the top edge – follow manufacturer’s instructions

The most common mistake here is rushing. Take your time aligning each panel before pressing firmly into the adhesive.

Installing Trim and Finishing Touches

The final steps bring everything together:

1. Allow adhesive to set according to manufacturer instructions (typically 24 hours)
2. Install any trim pieces included with your surround kit
3. Apply silicone caulk to all seams between panels
4. Caulk around the bottom edge where the surround meets the tub
5. Reinstall fixtures, using plumber’s putty or silicone behind escutcheons
6. Let all caulk cure fully before using the shower (usually 24 hours)

For a professional-looking caulk job:

1. Apply painter’s tape on both sides of where you’ll caulk
2. Run a bead of caulk along the seam
3. Wet your finger and smooth the caulk
4. Remove tape immediately for clean lines

Maintenance and Care Tips for Your New Bathtub Surround

To keep your new surround looking fantastic for years:

• Clean regularly with non-abrasive bathroom cleaners
• Avoid harsh chemicals like bleach which can damage some surround materials
• Squeegee water off after showering to prevent mineral buildup
• Reseal seams with silicone caulk every 1-2 years
• Fix any small issues immediately before they become larger problems

Most surrounds will last 10-15 years with proper care. The biggest threat is water getting behind the panels, so maintaining good seals is essential.

Troubleshooting Common Installation Issues

Even the most careful DIYer might encounter some challenges:

• Panels won’t lie flat: Check for wall irregularities and use additional adhesive or small brads to secure
• Gaps between panels: May need additional caulk or trim pieces to cover
• Fixtures don’t align with cutouts: Enlarge cutouts carefully or adjust plumbing slightly
• Bottom edge not sitting flush with tub: Use a heat gun to gently warm the material for better conformity or apply additional caulk

Remember that no bathroom is perfectly square. Small adjustments during installation are normal and expected.

FAQs About Bathtub Surround Installation

Q: How long does it take to install a bathtub surround? A: For most DIYers, plan on a full weekend project. The actual installation might only take 4-6 hours, but you’ll need additional time for wall preparation and allowing adhesives and caulk to cure properly before using the shower.

Q: Can I install a surround over existing tile? A: While technically possible in some cases, it’s not recommended. Removing the tile provides a flatter, more secure surface for adhesion and allows you to inspect for any water damage behind the tile. The exception would be using specialized systems specifically designed to cover tile.

Q: Do I need to remove my bathtub to install a new surround? A: No, most surround systems are designed to be installed around an existing tub. However, if you’re replacing your tub as well, install the tub first, then the surround.

Q: What’s the best material for a bathtub surround if I’m on a budget? A: Three-piece acrylic surrounds offer the best balance of affordability, durability, and ease of installation for most budget-conscious DIYers. Fiberglass is slightly cheaper but typically doesn’t last as long.

Q: How do I know if my walls are damaged behind my old surround? A: Look for discoloration, soft spots when you press on the wall, visible mold or mildew, or a musty smell. If you suspect damage, it’s crucial to replace the damaged wall material before installing a new surround to prevent further issues.

Conclusion

Installing a bathtub surround is a rewarding DIY project that dramatically improves your bathroom’s appearance and functionality. While it requires attention to detail and some basic home improvement skills, the process is straightforward enough for most homeowners to tackle successfully.

The key to a great installation lies in thorough preparation, careful measurement, and patience during the actual installation. Take your time with each step, particularly when preparing your walls and aligning panels. The extra effort you put in now will pay dividends in durability and appearance for years to come.

By following this guide, you’ve not only saved hundreds of dollars on professional installation but gained the satisfaction of completing a significant home improvement project yourself. Enjoy your new bathtub surround!