How to Install a Pedestal Sink (2023)

"There's something elegant about pedestal sinks," says This Old House plumbing and heating expert Richard Trethewey. "And they're perfect for a half bath, where a vanity would overwhelm the limited space."

Pedestal sinks were originally made of enameled cast iron, but by 1915 manufacturers began fabricating them from vitreous china, a glass-like porcelain. For all their stylish attributes, pedestal sinks present some installation challenges.

"This is the graduate school of do-it-yourself projects," Trethewey says. Drain and supply pipes must be roughed in at the right height. Completed pipe work has to look neat. And looming at every turn is the dreaded "tink," the sound porcelain makes when a fastener is tightened too much - and the china breaks.

Trethewey often gets calls from homeowners who've been stymied by some critical step in the process. "You must measure, measure, measure," he counsels. "Don't rely on the manufacturer's instruction sheet."

Pedestal Sink Overview

How to Install a Pedestal Sink (1) Illustration by Gregory Nemec

Planning Ahead

First choose your sink, thenhire a plumber to rough in a new waste pipe. "More often than not, the exisiting waste pipe is too low to install the trap, which fits inside the pedestal," Richard says.

While the wall is open, install blocking, a horizontal 2x that's screwed between the studs at basin height, beneath the palster or drywall. Blocking provides a solid anchor for the lag screws holding the sink against the wall.

Sinks do not come with fasteners. Have lag screws and washers on hand before undertaking this project.

Some steps require four hands. If you try to do everything by yourself, you may see hundreds of dollars' worth of porcelain topple and smash to the floor.

(Video) How to Install a Pedestal Sink and Faucet -- by Home Repair Tutor

Step 1: Prep the rough plumbing, Part I

How to Install a Pedestal Sink (2) Photo by David Carmack

Shut off the main water supply and drain the hot and cold lines into a bucket.

At the sink location, place a bucket under the copper supply lines and, with a compact tubing cutter, shear them both off about 2 inches from the wall.

Tighten the cutter slightly after each turn around the tube to avoid distorting the soft copper.

Find the distance from the center of the basin's drain to the wall. (On new sinks, this dimension is supplied with the instructions.)

Measure out from the wall and mark this distance on the PVC waste pipe.

Step 2: Prep the rough plumbing, Part II

How to Install a Pedestal Sink (3) Photo by David Carmack

Hold the P-trap, fitted with its elbow, alongside the pipe, with the trap's vertical end centered on the mark.

Now mark the pipe where the PVC shoulder joins the elbow.

Using a hacksaw, cut the waste pipe at this mark. To help ensure a square cut, hold the saw parallel to the wall and do not apply downward pressure.

Step 3: Solder the supply lines

How to Install a Pedestal Sink (4) Photo by David Carmack

Gently ream the inside edges of the copper supply lines with a pocketknife or the triangular blade on a tubing cutter. This removes the burr left by the tubing cutter.

(Video) How to Install a Pedestal Sink

Polish the ends of the supply lines with sandpaper until the copper is shiny. Coat the line with flux. Polish and flux the inside of the angle stops and slip them, with their escutcheons, over the supply lines.

Light the propane torch and apply its bright blue inner flame to the stop, at the spot where the supply line ends. Hold the tip of lead-free solder against the copper tubing where it joins the stop, on the side opposite the flame.

When the solder starts to melt, turn off the torch and run the solder around the joint. After it cools slightly, wipe with a damp rag to smooth the exposed solder and remove any flux, which corrodes copper.

Step 4: Install a pop-up drain

How to Install a Pedestal Sink (5) Photo by David Carmack

Roll a wad of plumber's putty into a ¾-inch-wide rope and wrap it around the pop-up drain, underneath its flange.

Wipe the basin's drain hole clean and drop the pop-up drain through it.

On the underside of the basin, slide a gasket and washer onto the drain. Thread the nut onto the drain and hand tighten. Using a wrench or water-pump pliers, finish tightening with a quarter-turn.

Step 5: Level the basin

How to Install a Pedestal Sink (6) Photo by David Carmack

Set the pedestal on the floor so it lines up with the PVC waste pipe and its center is about the same distance from the wall as the center of the basin's drain (see step 2).

Place the basin on the pedestal and against the wall. Fine-tune the pedestal placement and level the basin side-to-side.

Make a mark on the wall through each of the mounting holes at the back of the basin. This shows where to drill later for the lag screws that hold the basin to the wall.

(Video) How I Install Kohler Memoirs Pedestal Sink

Step 6: Attach the trap

How to Install a Pedestal Sink (7) Photo by David Carmack

Keeping the pedestal and basin together, move them away from the wall. Have a helper hold the sink steady so it doesn't tip over.

Test-fit the P-trap and elbow assembly to the PVC waste pipe, and measure the distance from the floor to the top of the trap's open vertical end. Mark the same distance up from the floor on the tailpiece of the pop-up waste assembly.

Remove the elbow and place the P-trap's slip-nut and washer over the pop-up waste's tailpiece. Cover the P-trap's threads with pipe dope or plumber's tape and slide the trap up to the mark you just made on the tailpiece. Thread the nut on to the trap by hand.

Tighten the nut with a wrench or water-pump pliers, taking care not to mar the chrome finish.

Drill into the wall at the lag screw locations marked in step 5.

Step 7: Mount the faucet

How to Install a Pedestal Sink (8) Photo by David Carmack

Place O-rings (if provided) or rings of plumber's putty under the flanges of the faucet's valves and spout, and insert them into their respective holes on the basin deck.

Slide a gasket and thread a nut onto the underside of each of the fittings. Tighten the nuts by hand, then finish tightening with a basin wrench. Carefully move the sink back against the wall.

Line up the mounting holes in the back of the basin with the holes in the wall. Insert the lag screws with their fender washers through the mounting holes and tighten with a socket wrench while checking for level.

Step 8: Make final connections

How to Install a Pedestal Sink (9) Photo by David Carmack

Place a washer between the elbow and trap, dope the threads, and tighten the nut by hand. Finish tightening with water-pump pliers.

(Video) How to Install a Pedestal Sink | The Home Depot

Measure the distance between one angle stop and its faucet valve, add an inch, and cut a chromed supply tube to length with a tubing cutter.

Slip two compression nuts and a ferrule over the cut end. First, tighten one nut to the stop with a wrench, then bend (don't kink) the supply tube slightly—first to the side, then up—so its acorn head fits into the valve's outlet.

Tighten the head to the valve with the second nut. Repeat for the other angle stop and faucet.

With the lift rod in the up position attach the pop-up stopper to the actuator arm, then secure the arm to the lift rod with the screw provided.

Slide the escutcheon and cover over the PVC waste pipe.

Step 9: Check your work

How to Install a Pedestal Sink (10) Photo by David Carmack

Make sure the faucet valves are closed, then turn main water supply back on.

Remove the spout's aerator and filter. Stand to one side and partially open one faucet valve.

Let the water run for a minute to clear air and any debris. Repeat with the other valve.

With the faucet shut off, check for leaks at all supply connections between the wall and the faucet's valves.

(Video) How to Install a Pedestal Sink | Pro tips | PLAN LEARN BUILD

Reattach the aerator and filter. Admire the results of your handiwork.

Tools

FAQs

What holds a pedestal sink to the wall? ›

Most pedestal sink basins hang from a bracket attached to a mounting brace (or framing) in the wall. The pedestal sink base is only a secondary support.

How is a pedestal sink installed? ›

About one inch extending from the wall secure the pedestal to the floor with a lag bolt and washer

Is a pedestal sink attached to the floor? ›

The typical installation is to mount a bracket to the wall and the pedestal to the floor. The sink hangs from the bracket and rests on the pedestal, and then the pieces are secured to the surfaces.

Where do the pipes go in a pedestal sink? ›

Water Supply Lines

The water supply tubing and shutoff valves should be tucked behind the base of the pedestal, if possible, to keep them out of view. The less you see of the drain and water lines, the better the pedestal will look.

Should pedestal sink be caulked to wall? ›

Yes, you should caulk a pedestal sink. It's important to caulk around the base of the pedestal, as well as the area where the rear portion of the sink bowl meets the wall. Applying a liberal layer of caulk to both areas helps avoid moisture getting trapped behind the sink, allowing the growth of mold and mildew.

Do you need a backsplash behind a pedestal sink? ›

A pedestal sink that rests against the bathroom wall requires a backsplash. However, if you have a small pedestal sink with a shallow basin, you will need a backsplash regardless of whether it's positioned against the wall. This is because it is easier to splash when you have a small sink.

How do you stabilize a pedestal sink? ›

Place the pedestal back in place but do not bolt it to the floor yet. Place the sink on top. Insert a wooden shim underneath the pedestal. Place a level across the top of the sink and insert or remove shims as necessary.

Are pedestal sinks outdated? ›

The pedestal sink is a common fixture in bathrooms, and as such, it has evolved over the years to suit a more modern appeal. As opposed to many bathroom fixtures that new innovations have replaced, pedestals remain one of the most popular choices for any bathroom remodel because they're both durable and timeless.

Is a pedestal sink worth it? ›

If you like a traditional look, need more floor space, and have enough storage space elsewhere, a pedestal sink may be perfect for you. If you're seeking more bathroom storage and counter space, or if you don't want a costly installation, this might not be the sink for you.

Why do people use pedestal sinks? ›

A Pedestal Sink is Easy to Maintain and Clean

Due to their streamlined and simple design, pedestal sinks provide easy maintenance and cleaning. Because they do not have countertops incorporated with the sink basin, they do not lend themselves to the typical clutter that can oftentimes plague this area of a bathroom.

How close can pedestal sink be to toilet? ›

A toilet should have some elbow room between it and another fixture or vanity. The NKBA's recommendation is at least 18″. Codes allow a minimum distance of 15″.

How many holes does a pedestal sink have? ›

The standard is two holes that are spaced four inches apart but some have a single hole or wider spacing.

How do you attach a pedestal sink to a wall without studs? ›

When your walls lack the studs to accommodate a pedestal sink, you must use toggle bolts and silicone adhesive to mount it to the wall. Toggle bolts use spring-loaded wings that expand once inserted into the cavity of the wall. As the bolt is tightened, the wings catch the back of the wall, reveals Family Education.

Do you glue pedestal to sink? ›

You can mount the sink bowl either with lag screws or by gluing a sink bowl to the pedestal with construction adhesive. While construction adhesive creates a strong bond between the sink bowl and pedestal, if you ever need to separate the two pieces, doing so will prove challenging — if not impossible.

Are 4 inch backsplashes outdated? ›

One of the biggest cons of a 4-inch backsplash over a full-tile backsplash is that the design is a little outdated. Though still a popular design, many kitchen designers tout the more modern and trendier full-tile design.

How do you tile around a pedestal sink? ›

How to tile around sinks - YouTube

How far should sink be from backsplash? ›

For a countertop with a standard depth of 24 inches, the edge of a drop-in sink should be a minimum of two inches from the lip of the sink. Additionally, the sink should have at least two inches of clearance between it and the backsplash on the rear wall.

What can I use to hide pipes? ›

You can purchase plastic or wooden pipe coverings at most hardware stores to match your decor. Simply spray some adhesive spray over the pipe and wrap your covering around it. Once you're done, cut off any excess with a box cutter or a utility knife – be careful and watch your fingers!

Do Pedestal sinks have traps? ›

Pedestal sinks provide a simple yet classic and space-saving look to a bathroom. But the P-traps in them can be trickier to access than those that are readily visible underneath the sink in a vanity or kitchen base cabinet.

How do you secure a bottom mount sink? ›

Undermount Sink Installation - YouTube

Are sink mounting clips necessary? ›

Traditionally, kitchen sinks use mounting hardware to secure the sink to the countertop. However, when you are missing the hardware, or your installer recommends that you avoid drilling the required hardware mounting holes in your granite, you can use silicone adhesive and epoxy to install the sink.

How do you secure a sink to a countertop? ›

How-to Install a Stainless Steel Drop-In Sink | Moen Installation Video

How much does a plumber charge to install a pedestal sink? ›

Highlights. Having a pedestal sink installed by a pro will cost $330 to $730. The cost will be higher if you need new water and drain lines set up. If you need your old sink removed and hauled away, expect to spend $30 to $150 for this additional labor.

What kitchen sinks are popular in 2022? ›

Belfast, Butler, and farmhouse style sinks are here to stay in 2022 as ceramic sinks are set to be one of the most popular kitchen trends again this year,” says Beesley. “Their iconic deep basin design can help transform any kitchen into a more classic and traditional space.

Is a pedestal sink best for a small bathroom? ›

While a good option for a small bathroom, pedestal sinks have no countertop space or vanity for storing toiletries and other items. Pedestal sinks come in many styles, sizes, colors and materials.

How do you organize a bathroom with a pedestal sink? ›

Hang a shelf (or a few!)

If you have pedestal sink storage issues, add a shelf above the sink to give you easy access to things you use daily. Shelves are a great addition to any bathroom with a pedestal sink, as shelves provide storage options more than just placing things below the sink or on the floor.

Can a pedestal sink be used without the pedestal? ›

A pedestal sink is basically a version of a wall-hung lavatory in that the sink is attached to the wall studs and doesn't need the pedestal for support.

What is the advantage of pedestal? ›

With the Pedestal system, you can easily compensate for slight unevenness, irregularities and any gradients on the laying surface creating a perfectly stable and fl at paved surface. The pedestal design allows for the laying surface and any installed services to be accessed and maintained without damaging the paving.

How much space is needed behind sink? ›

If a 1-inch buffer of counter space is left in front of the sink, 3 inches more is available behind it to mount the faucet. As long as the faucet base is less than 3 inches wide and the total width of the sink is 20 inches or less, the faucet will comfortably fit on the countertop.

What is the smallest bathroom allowed by code? ›

Minimum Bathroom Dimensions

This is one of the standard layouts for small bathroom floor plans. Half bathroom dimensions (toilet and corner sink, pocket door) 5ft x 3ft (1.5m x 0.9m). The minimum you're allowed by code in the US is 5ft x 2.5ft (1.5m x 0.76m).

How much space do you need around a sink? ›

Minimum Requirements

A clear floor space of 15 inches, measured from the center of the sink or vanity to any side wall, is also required. While these clearance measurements represent the minimum required, home-building experts suggest a clear floor space in front of a sink or vanity of 30 inches instead.

What are the 3 holes in the sink for? ›

Depending on the design of your sink, it may have one, two or three holes, and they may appear between the faucet valves, facing toward you, or under the near rim, facing the mirror. They serve two functions: to prevent an overflow with the drain stopper engaged and to provide an escape route for air in the drain.

What is standard size for pedestal sink? ›

A “standard” pedestal sink measures roughly 22- to 24-inches wide and 29 to 34 inches tall.

How do you secure a sink to the wall? ›

How to install a wall mount sink and plumb it too! - YouTube

How do you hang a pedestal sink without studs? ›

When your walls lack the studs to accommodate a pedestal sink, you must use toggle bolts and silicone adhesive to mount it to the wall. Toggle bolts use spring-loaded wings that expand once inserted into the cavity of the wall. As the bolt is tightened, the wings catch the back of the wall, reveals Family Education.

What holds a bathroom sink in place? ›

Mounting Clips and Brackets

The second style of clip attaches directly to the sink, usually on the side, and to the underside of the countertop. Clips are designed to keep the sink from shifting, but in conjunction with caulk, glue or sealant to keep it in place. Most sinks use about 10 clips around the edge.

What holds a drop in sink in place? ›

Drop-in sinks are secured by hidden metal clips under the countertop as well as a bead of silicone caulk under the sink's edge. Yet not all drop-in sinks require clips to lock them down.

Are pedestal sinks outdated? ›

The pedestal sink is a common fixture in bathrooms, and as such, it has evolved over the years to suit a more modern appeal. As opposed to many bathroom fixtures that new innovations have replaced, pedestals remain one of the most popular choices for any bathroom remodel because they're both durable and timeless.

Can you mount a sink to drywall? ›

If you can find a secure wall and anchor to a wall bracket, you can install your wall-mounted sink on your own relatively easily! The fixtures are often attached directly to the ceramic sink but can easily be swapped out for updated ones if you ever want to redecorate.

How do you stabilize a pedestal sink? ›

Place the pedestal back in place but do not bolt it to the floor yet. Place the sink on top. Insert a wooden shim underneath the pedestal. Place a level across the top of the sink and insert or remove shims as necessary.

Can you install a sink without clips? ›

Traditionally, kitchen sinks use mounting hardware to secure the sink to the countertop. However, when you are missing the hardware, or your installer recommends that you avoid drilling the required hardware mounting holes in your granite, you can use silicone adhesive and epoxy to install the sink.

How can I secure something without studs? ›

How to Hang Heavy Items Without a Stud - YouTube

Does silicone hold sink in place? ›

Most undermount sink manufacturers recommend that you use pure, 100-percent silicone sealant for undermount sink installation. Silicone sealants are designed for resilient flexibility and have good adhesive properties. If an ordinary caulk was used to seal the sink, it likely will fail quickly.

What holds the sink to the countertop? ›

Sink Clips

The bolts are inserted into grooves that the fabricator drills or cuts into the back of the counter, spaced evenly around the flange of the sink. The clip is then attached to the flange and tightened to secure the sink to the counter top.

What adhesive do you use to attach sink to vanity? ›

Silicone-based caulk is the adhesive to attach sink to the vanity. Silicone-based caulk is available in tubes or buckets in various thicknesses and colors. Using an inexpensive silicone-based caulk eliminates the chance of using too much or getting acrylic sealant on your clothing or hands.

Videos

1. How to Replace a Pedestal Sink | Ask This Old House
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2. Pedestal Sink Installation: What the plumbers didn't tell you
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3. How to install a pedestal basin
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4. Installation of a Pedestal Sink
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5. Pedestal Sinks: The Pros and Cons of Installing a Pedestal Sink | This Plumber Doesn’t Like Them
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6. How To: Install a Pedestal Sink - Bob Vila
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