Wall-Hung Toilets: A Look at Behind-the-Scenes

If you love the sleek lines of this stylish toilet, be sure to check off these boxes before you shop.

Felix's bathroom (Above) A steel beam running under Felix’s powder room floor prevented floor-mounted plumbing from being installed; a wall-hung toilet solved the problem in her Williamsburg renovation.

Once prevalent in European commercial spaces, the sleek and smart design of wall-hung toilets are making their way into residential homes in the U.S. Consider the benefits: the ease of cleaning with no more hard-to-reach spots, the gaining of valuable floor space, and more water-efficient options. (For the latter, look for the Environmental Protection Agency’s WaterSense label and aim for a “low-flow” model that uses around 1.0 gallons per flush, or gpf). Its minimalistic flair won’t only transform your master bath; it’s also a solution for awkward, tight spaces or that dream powder room with limited square footage. Before choosing your model, consider these prerequisites:

Room in your walls

The most distinctive feature of a wall-hung toilet is that the water tank and plumbing hardware are concealed behind the wall, making the style ultra sleek. If you plan to switch from a conventional toilet to a wall-hung one, you will need to:

*Take down your wall.

*Confirm there is enough room inside of it to accommodate the in-wall system and additional bracing.

*Have your contractor modify the plumbing/waste system.

This upgrade can work well with a full bathroom renovation but may fall into the more-trouble-than-it’s-worth category if the toilet is the only feature you’d like to change. In a full gut renovation, your contractor will have a better idea of what the depth and/or the contents of your wall are after taking it down to the studs and can then determine what special accommodations may be necessary, including:

*Build out the wall an extra inch?

*Work with your apartment building to adjust the plumbing?

*Change the spacing between the studs?

*Adjust the location of the toilet?

Be aware that there are other points to factor in when considering a wall-hung toilet. Be flexible in your design to navigate unforeseen challenges. Sweeten contractor Claud recently installed a wall-hung toilet in a Brooklyn project and points out, “You won’t be able to install this type of toilet in many NYC condos and high-rises because of buildings with concrete slab subfloors which most boards won’t allow you to break through. When a high-rise has a concrete subfloor—which they frequently do—the floor flange that the toilet sits on is imbedded in that concrete.”

However, owning a house allows you to alter the plumbing system. Claud says of his Brooklyn client’s own house, “We had the luxury of breaking a hole through the bathroom floor and through to the basement ceiling.”

Maintenance and repair

Wall-hung toilets need to be installed by licensed professionals—and with great care. Since all hardware and plumbing will be hidden behind the walls, future maintenance will require going back into the walls if any issues arise. Most wall-hung models include an easily removable flush plate which doubles as a maintenance entry point into the wall.

(Tip: Keep a few extra wall tiles or a pint of your wall paint in storage just in case a necessary repair arises.)

Sold separately or together?

Some wall-hung toilets are sold as a complete system to include the bowl, in-wall tank, carrier and seat. Others are sold in separate pieces.

Work closely with your general contractor to determine what you need to order. While you will guide your contractor on your aesthetic and comfort priorities, he or she will help you choose and order a toilet model and all of the component pieces that will work best for your space. As Claud explains, “I ask homeowners for the specs of their dream toilet. This means they download a specification sheet from the manufacturer’s website which explains all the details in order to install the toilet. The spec sheet shows me the plumbing connections and dimensions I need to know.”

Ready to start shopping for your dream toilet? Check out our guide on bath renovation costs.

Sweeten handpicks the best general contractors to match each project’s location, budget, scope, and style. Follow the blog for renovation ideas and inspiration and when you’re ready to renovate, start your renovation on Sweeten.