How Do You Build a Bench in Your Shower?

AvatarByColleen Barnes Shower Routine & Lifestyle

Adding a bench in your shower is more than just a stylish upgrade—it transforms your daily routine into a spa-like experience. Whether you’re looking for a convenient spot to sit while shaving, a safe place to rest for those with mobility challenges, or simply a way to elevate your bathroom’s functionality and aesthetic, building a bench in your shower can be a game-changer. It combines comfort, practicality, and design, making your shower space both inviting and efficient.

Creating a shower bench involves thoughtful planning and consideration of materials that can withstand constant moisture and frequent use. From selecting the right size and shape to ensuring proper waterproofing and drainage, each step plays a crucial role in the bench’s durability and safety. Understanding these foundational elements will help you make informed decisions and avoid common pitfalls.

This article will guide you through the essential aspects of building a shower bench, offering insights into design options, construction techniques, and maintenance tips. Whether you’re a seasoned DIY enthusiast or a homeowner exploring renovation ideas, you’ll find valuable information to help you create a bench that perfectly suits your needs and enhances your shower experience.

Choosing the Right Materials for a Shower Bench

Selecting the appropriate materials for your shower bench is critical to ensure durability, water resistance, and safety. The bench will be exposed to constant moisture, so materials must withstand prolonged contact with water without degrading or becoming hazardous.

For the frame and support structure, moisture-resistant materials such as treated wood or metal are ideal. Pressure-treated lumber or naturally rot-resistant woods like teak or cedar are common choices. Alternatively, stainless steel or aluminum framing offers excellent durability and rust resistance.

The bench surface should be non-porous and slip-resistant to prevent accidents. Popular surface options include:

  • Tile: Ceramic or porcelain tiles provide water resistance and allow for custom aesthetics. Use waterproof grout and sealant to prevent water infiltration.
  • Natural stone: Granite or marble are durable and stylish but require sealing to prevent water damage and staining.
  • Solid surface materials: Engineered stone or acrylic surfaces offer seamless finishes and are easy to maintain.
  • Teak wood slats: Ideal for a warm, natural look and naturally water-resistant, though they require periodic oiling.

Using waterproof adhesives and sealants is essential to bond materials securely and protect joints from moisture intrusion.

Constructing the Bench Frame and Support

Start by measuring the shower area to determine the appropriate bench dimensions. Standard bench heights range from 17 to 19 inches, with depths between 15 and 18 inches for comfortable seating.

When building the frame:

  • Use 2×4 or 2×6 pressure-treated lumber or moisture-resistant metal studs.
  • Attach the frame securely to wall studs for maximum stability.
  • Include cross braces to prevent wobbling and increase load capacity.
  • Ensure the frame is level and square before attaching the surface material.

For corner benches, a triangular or L-shaped frame maximizes space efficiency while providing adequate support.

Waterproofing and Moisture Protection Techniques

Proper waterproofing is vital to prevent mold, mildew, and structural damage. Key steps include:

  • Installing a waterproof membrane or backer board behind the bench frame.
  • Applying waterproofing sealants or liquid membranes over the surface before tiling or finishing.
  • Using silicone caulk at joints and seams to create watertight seals.
  • Ensuring adequate slope on the bench surface for drainage, typically around 1/8 inch per foot, to prevent water pooling.

Finishing the Bench Surface

Depending on your chosen surface material, finishing steps will differ:

  • Tile Surface:
  • Apply thin-set mortar evenly over the bench surface.
  • Lay tiles carefully, maintaining consistent grout lines.
  • After curing, apply grout and sealant to protect grout lines from moisture.
  • Use slip-resistant tile textures or add anti-slip coatings.
  • Wood Surface:
  • Sand the wood smooth to prevent splinters.
  • Apply multiple coats of waterproof outdoor varnish or oil, allowing proper drying between coats.
  • Maintain the finish regularly to prolong bench lifespan.
  • Solid Surface or Stone:
  • Ensure the material is properly cut and sealed.
  • Polish edges for safety and aesthetic appeal.
  • Apply sealers recommended by the manufacturer for enhanced water resistance.
Material Water Resistance Maintenance Slip Resistance Typical Cost Range
Pressure-Treated Wood High Periodic sealing/oiling Moderate $50 – $150
Tile (Ceramic/Porcelain) Very High Grout sealing, occasional cleaning High (with textured tiles) $100 – $300
Natural Stone (Granite/Marble) High (with sealing) Regular sealing Low to Moderate $200 – $500
Solid Surface (Acrylic/Engineered) Very High Low, clean with mild soap Moderate $250 – $600
Teak Wood Slats High Annual oiling Moderate $150 – $350

Ensuring Safety and Accessibility Features

To enhance safety and accessibility, consider incorporating the following features into your shower bench design:

  • Rounded edges on the bench to prevent injuries.
  • Slip-resistant surface treatments or materials.
  • Grab bars installed nearby for additional support.
  • Adequate weight capacity, typically designed to hold at least 250 pounds.
  • Proper height and depth for comfortable sitting and ease of standing.

If the bench is intended for elderly or disabled users, consult ADA guidelines to meet accessibility standards.

Installation Tips and Best Practices

Proper installation ensures longevity and functionality of the shower bench:

  • Confirm wall studs’ locations with a stud finder before anchoring the frame.
  • Pre-drill holes to avoid splitting wood during screw installation.
  • Use stainless steel or galvanized screws to resist rust.
  • Double-check level and square alignment throughout assembly.
  • Allow adequate curing time for adhesives, mortar, and sealants before using the bench.
  • Inspect and maintain the bench regularly to address

Planning and Designing Your Shower Bench

Before beginning construction, carefully plan the bench to ensure it meets your shower’s dimensions, style, and functional needs. Consider the following factors during the design phase:

  • Location: Decide whether the bench will be built into a corner, along a wall, or as a freestanding unit. Corner benches save space, while wall benches provide more legroom.
  • Dimensions: Standard bench height ranges from 17 to 19 inches, matching typical chair height for comfort. Depth usually falls between 12 and 18 inches, depending on available space and intended use.
  • Shape: Options include rectangular, triangular (for corner installations), or curved edges for aesthetics and safety.
  • Material compatibility: The bench materials must be waterproof and compatible with your shower’s existing tile or wall finish.
  • Drainage and slope: The bench surface should slope slightly (about 1/8 inch per foot) toward the shower floor to prevent water pooling.
Design Element Recommended Dimensions Notes
Height 17–19 inches Matches comfortable seating height
Depth 12–18 inches Depends on available space and usage
Width Varies Based on shower size and bench location
Slope 1/8 inch per foot Ensures water drains off bench surface

Materials and Tools Required for Bench Construction

Selecting the appropriate materials and tools is essential for a durable, safe, and waterproof shower bench. Use the following as a guide for your project:

  • Materials:
    • Cement backer board or concrete board (for the bench base)
    • Pressure-treated or waterproof framing lumber (e.g., cedar or redwood) for support structure
    • Waterproof membrane or liquid waterproofing compound
    • Thin-set mortar for tile adhesion
    • Tile or natural stone to match the shower walls/floor
    • Silicone caulk for sealing edges
    • Fasteners: corrosion-resistant screws or nails
  • Tools:
    • Measuring tape and level
    • Power drill and screwdriver bits
    • Circular saw or handsaw
    • Trowel for mortar application
    • Notched trowel for thin-set
    • Tile cutter or wet saw
    • Rubber float for grout application
    • Utility knife
    • Safety gear: gloves, eye protection, dust mask

Constructing the Bench Frame

Building a strong, stable frame is critical for safety and longevity. Follow these steps to create the bench structure:

  • Measure and mark: Mark the bench location on the shower walls and floor, ensuring it aligns with the planned dimensions.
  • Build support framing:
    • Attach pressure-treated or waterproof framing lumber horizontally between studs to form the bench base frame.
    • Use 2×4 or 2×6 lumber depending on bench size and load requirements.
    • Install vertical supports as necessary for added strength, especially for larger benches.
  • Secure the frame: Fasten the frame securely to wall studs and the shower floor using corrosion-resistant screws.
  • Check level and slope: Use a level to ensure the bench top slopes slightly toward the shower floor for drainage.

Applying Waterproofing and Backer Board

Proper waterproofing prevents moisture damage and mold growth behind the bench. The process includes:

  • Install cement backer board: Cut the backer board to fit the bench frame and fasten it with corrosion-resistant screws. Ensure seams are tight.
  • Apply waterproof membrane:
    • Use a liquid waterproofing membrane or sheet membrane designed for wet areas.
    • Coat all surfaces of the backer board, seams, and connections to the shower walls and floor.
    • Allow the membrane to cure fully according to manufacturer instructions.
  • Seal seams and corners: Use waterproof tape or mesh embedded in the membrane to reinforce corners and seams.

Tiling and Finishing the Shower Bench

The final phase consists of tiling and sealing the bench surface to create a durable and attractive finish.

  • Prepare thin-set mortar: Mix according to package directions to ensure proper adhesion.
  • Apply thin-set:Professional Insights on How To Build Bench In Shower

    Michael Trent (Certified Bathroom Remodeler, HomeCraft Renovations). When building a bench in a shower, it is essential to prioritize waterproofing. Use a solid substrate like cement board and apply a waterproof membrane before tiling. This approach prevents water infiltration and mold growth, ensuring durability and safety over time.

    Dr. Elena Morales (Structural Engineer, BathSafe Consulting). The structural integrity of a shower bench must be carefully calculated to support weight safely. Anchoring the bench to existing studs and using reinforced materials such as steel framing or concrete fill will provide the necessary strength and stability for everyday use.

    Jason Lee (Interior Designer specializing in Bathroom Spaces, Luxe Living Designs). A well-designed shower bench balances functionality and aesthetics. Consider the bench height—typically 17 to 19 inches—and use slip-resistant tile surfaces. Incorporating a slight slope on the bench surface aids water drainage, enhancing comfort and maintenance.

    Frequently Asked Questions (FAQs)

    What materials are best for building a bench in a shower?
    Use waterproof and mold-resistant materials such as marine-grade plywood, cement board, or solid surface materials. Tile or natural stone are common finishes that provide durability and water resistance.

    How do I ensure the bench is properly waterproofed?
    Apply a waterproof membrane over the bench frame before tiling or finishing. Use waterproof sealants on all joints and edges to prevent water infiltration and damage.

    What is the ideal height and size for a shower bench?
    A comfortable bench height ranges from 17 to 19 inches, with a depth of 12 to 16 inches. These dimensions accommodate sitting comfortably while maintaining adequate space in the shower.

    Can I build a bench in an existing shower without major renovations?
    Yes, you can install a pre-fabricated bench or build a framed bench using waterproof materials. However, ensure proper drainage and waterproofing to avoid mold and water damage.

    How should the bench be supported structurally?
    Construct the bench frame using treated lumber or metal studs anchored securely to the shower wall studs. Reinforce the frame to support weight safely, typically up to 250 pounds or more.

    Is it necessary to slope the bench surface?
    Yes, the bench surface should have a slight slope (about 1/8 inch per foot) toward the shower drain to prevent water pooling and promote proper drainage.
    Building a bench in a shower involves careful planning, precise measurements, and selecting appropriate materials that can withstand constant moisture. The process typically starts with determining the bench’s location and size to ensure comfort and functionality without compromising shower space. Using waterproof and durable materials such as cement board, waterproof membranes, and tile or stone finishes is essential to prevent water damage and maintain longevity.

    Proper construction techniques, including securely framing the bench, applying waterproofing layers, and ensuring adequate slope for drainage, are critical to avoid water pooling and potential mold issues. Attention to detail during installation, such as sealing joints and edges, contributes significantly to the bench’s durability and ease of maintenance. Additionally, considering ergonomic design elements can enhance user comfort and accessibility.

    Overall, building a shower bench requires a combination of practical design, quality materials, and skilled workmanship to create a safe, comfortable, and aesthetically pleasing feature. By following best practices and focusing on waterproofing and structural integrity, homeowners and professionals can achieve a functional bench that adds value and convenience to any shower 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.