Windows in showers: A comprehensive guide

Key points

• Windows in showers improve ventilation and add natural light to your bathroom.

• Obscured glass and glass block windows offer privacy while letting in natural light.

• Proper waterproofing is essential to protect your shower window and surrounding areas from water damage.

Installing a window in your shower can create an open and elegant feel by letting in natural light. Awning, casement, picture and transom windows are among the most common window types used in showers. But they don’t all perform well in every bathroom environment.

Windows in showers improve bathroom ventilation, allowing moisture to escape and reducing the chances of mold and mildew on tiles, grout and other surfaces, according to Kevin McLaughlin, owner of Heritage Exteriors in Upton, Massachusetts. “On the downside, privacy can be a concern if not properly addressed. And there’s always the risk of water leakage if installation isn’t done meticulously,” he added.

Choose a window that complements your bathroom’s layout and your needs for privacy, airflow and decor. Above all, selecting a shower window with top-notch waterproofing can save you from costly repairs and water damage later.

Though a professional can help you choose the best window for your shower, it’s smart to learn about various window types, their advantages and potential limitations to make your discussions more productive. Here’s what you should know.

Is a shower window right for you?

A shower window could make sense if you love a bright bathroom and want fresh air. But despite better bathroom ventilation nowadays, showers are often subject to high moisture levels — potentially causing moldy or rotting window frames without proper installation and maintenance.

Nick Chatzigeorgakis, founder of Intrabuild, a design-build firm in New York City, shared his experience installing a shower window in a loft renovation with us. He highlighted the importance of proper waterproofing measures: “We [went with] awning functionality for ventilation but had to take extra measures to ensure the waterproofing was foolproof.” 

Chatzigeorgakis and his crew used flashing around the window frame and thoroughly sealed it with top-quality silicone caulking. Then, they installed a waterproof membrane on the surrounding walls and used moisture-resistant backer boards.

If you’re willing to invest in necessary waterproofing, a bathroom window can be worthwhile. After that, simple habits such as using a squeegee to wipe down the window and running an exhaust fan after your shower can go a long way in preventing moisture damage.

Here are the pros and cons of installing a window in your shower:

Pros	Cons
Reduces the need for artificial lighting during the day	Reduces privacy without the right glass type and/or window treatments
Provides a luxurious, spa-like feeling while showering	Requires an upfront investment when you hire a professional to ensure proper waterproofing and adherence to building codes
Improves ventilation, reducing condensation and mold growth	Increases heating costs in cold climates without taking extra insulation measures

What are the best window types for showers?

When choosing a new or replacement window for your shower, consider ventilation, style and privacy.

The best windows for showers should embody the following traits:

• Allow for proper airflow to reduce moisture buildup
• Complement your bathroom’s design aesthetic
• Provide enough privacy to maintain a comfortable and secure space
• Open and close easily (if you want them to)
• Feature water- and humidity-resistant construction

Below are the window types that work best in showers, according to the home builders we interviewed.

Awning window

An awning window swings open from the bottom, with hinges at the top. “These windows provide excellent ventilation while keeping the rain out and can be placed higher up on the wall for added privacy,” said McLaughlin. But the opening may be harder to reach in the shower, so it’s best for taller people or those who don’t mind using a step stool.

Casement window

A casement window hinges at the side and opens outward like a door, offering good ventilation and a clear view. When closed, it provides a tight seal, reducing heating and cooling costs. On the downside, it’s easier to break into and often more expensive than other window types. So, a casement window is best if you live in a low-crime area and have the extra funds to splurge on your bathroom remodel.

Picture window

A picture window, also known as a fixed window, doesn’t open but provides ample natural light. You can pick a frosted finish and place it higher on the wall for optimal privacy. Since it doesn’t offer ventilation, it’s ideal for bathrooms with exhaust fans. Picture windows showcase a beautiful outdoor view, such as a backyard oasis.

Transom window

A transom window is a narrow, rectangular window installed above doors or other windows. In a shower, it lets in natural light while maintaining privacy due to its high placement. But it’s generally smaller — so it may not let in as much light as other window types.

Sliding window

A sliding window has sashes that slide horizontally along a track. It offers a wide opening for airflow and is easy to use, making it a fantastic choice for showers. You’ll love having one in your bathroom if you appreciate the convenience of a simple gliding motion.

The downside is this window type doesn’t seal as tightly as casement windows. That makes it better for mild climates or homeowners who don’t mind a slight draft.

Hopper window

A hopper window hinges at the bottom, opening inward from the top. It offers significant ventilation and can be installed high on your wall for privacy. It’s perfect if you have a small bathroom and want a window that’s easy to clean from inside the shower area. 

However, consider city and state building codes when choosing hopper windows, as they might not meet emergency exit requirements. Double-check your local building regulations before installing this window type in a bathroom requiring multiple exit points.

How do you waterproof a shower window?

The first step to waterproofing a shower window is choosing a waterproof frame material, such as fiberglass or vinyl. Fiberglass window frames hold their shape well, even under prolonged weather extremes. They’re also resistant to decay and mold.

Beyond that, McLaughlin offered some valuable advice on waterproofing shower windows: “I use a flexible, waterproof membrane around the window opening and high-quality flashing to direct water away from potential entry points,” he said. “Silicone caulking seals the edges, and moisture-resistant backer boards give an extra layer of defense against water infiltration.”

If you install your own window, apply a generous amount of silicone caulk around the frame to seal any gaps between the window and the wall. This stops water from seeping behind the frame and causing damage. If you rely on a contractor, ask them about the waterproofing measures they plan to use.

How do you ensure privacy with a shower window?

When picking a shower window, choose materials that obstruct wandering eyes but not the natural light that brightens your space. Two smart solutions are selecting the right glass type and installing window treatments that fit your needs.

Pairing your chosen glass with window treatments such as blinds, curtains, shades or shutters adds an extra layer of privacy.

Glass types

Specialty glass options, such as frosted or textured glass, feature unique surface treatments or designs that distort the view from the outside. Yet, they maintain an airy, open feel in your shower. The level of privacy and light you get will depend on the specific glass type and pattern you pick.

When choosing glass for your shower window, you have two main options that offer privacy without sacrificing natural light. Each type offers a different balance of seclusion, light transmission and aesthetic appeal.

Obscure glass

Obscure glass, also known as patterned or textured glass, has a textured or frosted surface that scatters light and distorts the view through the window. It’s available in various three-dimensional patterns, including reeds, bubbles, Vecchio and Sereemy. It also comes in decorative patterns such as rain, pebble and bamboo.

You’ll love textured glass if you want something strong and scratch-resistant. Or, you can go with a consistent hazed look known as frosted glass.

“My clients prefer frosted glass to let natural light flood the space while hiding their interior details,” McLaughlin said. This glass type works well for showers because you don’t need extra window treatments to get privacy. It’s ideal if you want something low-maintenance and easy to clean.

Glass block

Glass block is a thick, translucent material that distorts the view while letting light pass through. It offers incredible privacy and insulation, making it a practical choice for shower windows. The main drawback is it doesn’t provide ventilation, so your bathroom might feel stuffy.

Window treatments

In addition to choosing the right glass type, window treatments can give you more privacy. Here are five options worth considering:

Blinds

Choose blinds with moisture-resistant materials such as faux wood or aluminum to prevent warping and mold growth. By adjusting the slats, blinds let you control the privacy in your shower while allowing in natural light when it’s not in use. Blinds come in various colors and styles to match your bathroom decor.

Curtains

Use shower curtains to cover the window and get privacy when needed. Pick curtains made from water-resistant materials such as polyester or linen blends to prevent mold and mildew growth. You can also use a double-curtain rod to hang a decorative curtain on the outside and a waterproof liner on the inside for added protection.

Shades

Roller shades are popular because you can easily raise or lower them to control the light and privacy in your bathroom. You can even add two roller shades: one sheer and one blackout. Sheer shades are great for daytime when you want light to get in, while blackout shades are ideal to block out as much light as possible — which is useful if your bathroom is connected to your bedroom.

Shutters

Shutters add a decorative touch to your bathroom and can be customized to fit your window size and shape. You can adjust the louvers to get excellent privacy and light control. Opt for a composite material to prevent warping and decay.

Window film

Window film is a thin adhesive you can stick onto your shower window glass. Installing and removing it is straightforward, making it a stellar choice for renters. It’s also affordable, has heat-blocking qualities and can be cut to fit any window size or shape.

How do you remove shower windows?

Unless you have extensive home remodeling experience, it’s best to hire a professional to remove and replace a shower window. The process typically involves removing the window frame, glass and any tile or waterproofing materials around it.

“Removing an existing shower window starts with preparation,” advised Chris Langley, an interior designer and director of Just Value Doors. “You want to protect the surrounding area and ensure all utilities are safely managed,” he said. Then, carefully remove the trim, caulking and any fasteners around the window.

After removing the seals, gently pry the window frame from the wall. Once the window is out, clean up the opening and fix any damage to the wall.

If you want to put in a new window, you must get the opening ready. This could mean putting in a moisture-resistant material, such as cement board, to keep your shower waterproof and strong. A professional contractor can help you with this process and ensure your new shower window is secured and sealed correctly.

What’s next?

When planning your shower window installation or replacement, consider how the window will impact the lighting, ventilation and aesthetics. If you’re unsure which route to take, consult a professional bathroom remodeler and get recommendations based on your needs and preferences.

When researching the best window companies for your shower project, look for positive reviews, proper licensing and insurance. Gather detailed quotes from several providers and ask for references before deciding.

And as you add a shower window, consider whether you should replace the rest of your bathroom windows.