All About Shower Installation

Installing a new shower is a great way to making your bathroom more functional and stylish. Whether you’re renovating an existing space or building a new bathroom from scratch, understanding the shower installation process should be the first thing you learn. In the video above, This Old House general contractor Tom Silva demonstrates a few key beginning steps to creating a modern, waterproof shower enclosure.

Types of Showers

Before diving into the installation process, you should understand the different shower types available.

Standard Showers

Standard showers are the most common. They typically feature a showerhead, controls, and a shower enclosure or curtain. These showers can be installed in a variety of layouts and work for most bathroom spaces.

Walk-In Showers

Walk-in showers, also known as curbless showers, offer a sleek, modern look and improved accessibility. They have a level entry, making them ideal for people with limited mobility. Walk-in showers often have glass enclosures or can be partially open, depending on the design.

Tub-Shower Combinations

Tub-shower combinations are versatile, providing bathing and showering options. They’re popular in homes with limited bathroom space or in households with young children.

Roman Showers

Roman showers, inspired by ancient Roman baths, are luxurious, open-concept shower spaces. They typically feature multiple showerheads, bench seating, and sometimes even steam capabilities. Roman showers are often larger than standard showers and can be customized to fit various design preferences.

Preparing for Shower Installation

Before beginning the installation, do the following to make sure the process flows smoothly:

1. Plan your shower layout and design
2. Get any necessary permits from local authorities
3. Gather your tools and materials
4. Remove existing fixtures and prepare the space
5. Inspect and repair any water damage or structural issues

Creating a Waterproof Shower

One of the most critical aspects of shower installation is good waterproofing. In the video above, Silva shows us how to use modern materials to create a waterproof shower enclosure.

Use Foam Board for Walls

Silva uses a special foam board with a waterproof coating for the shower walls. This material has several advantages:

• Lightweight and easy to handle
• Precoated with a waterproof membrane
• Provides a stable substrate for tile installation
• Eliminates the need for traditional cement board and waterproofing methods

To install the foam board:

1. Cut the board to fit the shower wall dimensions
2. Secure the board to the wall studs using screws
3. Tape the seams and screw heads with waterproof tape

Build a Shower Bench

A built-in shower bench adds both comfort and style to your shower. Silva walks us through the following steps to construct a sturdy bench using foam materials:

1. Cut 2-inch foam board for the bench supports
2. Install the supports 16 inches on the center
3. Use caulking to mesh the pieces together
4. Cover the bench with a thinner foam board material
5. Seal all seams and joints with waterproof tape

This method creates a strong, waterproof bench structure that’s ready for tiling.

Use a Waterproof Membrane

For additional waterproofing, consider using a roll-on or sheet membrane, which:

• Is easy to apply
• Guarantees complete coverage
• Adds an extra layer of protection

Apply the membrane following the manufacturer’s instructions, paying close attention to corners and seams, which are more vulnerable to water infiltration.

Installing the Shower Floor

The shower floor is a main component that requires an accurate slope for drainage. Silva shows how to use a pre-sloped foam shower pan with these steps:

1. Measure and cut the foam pan to fit the shower space
2. Install the shower drain, creating a good seal
3. Set the foam pan in place using thinset mortar
4. Connect the drain to the plumbing system

This pre-sloped pan eliminates the need for a traditional mud job, saving time and guaranteeing good drainage.

Adding Comfort Features to Your Shower

Modern shower installations often include comfort features, like heated floors and built-in storage.

Heated Shower Bench and Floor

Silva demonstrates installing electric heating elements in the shower by doing the following:

1. Placing a heating mat on the shower bench with thinset
2. Running electric heating wire in a serpentine pattern, keeping 3 inches away from each wall
3. Connecting the heating elements to a dedicated thermostat

This system provides warmth to the tile surfaces.

Multiple Showerheads

Consider installing multiple showerheads for a spa-like experience. You can choose from overhead rain showerheads, handheld showerheads, or body spray nozzles. Ensure your plumbing can handle the increased water flow before installing multiple fixtures.

Built-In Storage

Other helpful additions to a shower are built-in niches or shelves for storage, which are convenient for holding toiletries and keeping the shower organized. These features can be tiled for a seamless look and additional waterproofing.

Tiling the Shower

Once the waterproof structure is in place, tile the shower with the following steps:

1. Choose appropriate tiles for shower use
2. Apply thinset mortar to the surfaces
3. Set tiles in place, using spacers for even grout lines
4. Allow the thinset to cure before grouting
5. Apply grout and seal as necessary

Remember to use tiles specifically rated for shower use for longevity and safety. Select tiles that are slip-resistant, easy to clean, and resistant to mold and mildew. On top of that, make sure you’re choosing tiles that complement the space. The right tile selection creates a beautiful shower for you to enjoy each day.

Finishing Touches for Your Shower

Complete your shower installation with these final steps:

1. Install shower fixtures (showerheads, controls, etc.)
2. Add a glass enclosure or shower curtain rod
3. Caulk all seams and joints for added water protection
4. Install any additional accessories (soap dishes, shelves, etc.)

Attention to detail in these finishing touches will boost your shower’s overall appearance and functionality.

Shower Maintenance and Care

To keep your newly installed shower in top condition:

• Clean regularly with appropriate products, avoiding harsh chemicals that can damage tile
• Check and reseal grout lines annually
• Inspect caulking and replace as needed
• Address any leaks or issues quickly to prevent water damage