moving Plumbing To Fit Vanity

How Hard Is It To Move Sink Plumbing

Moving plumbing to fit the vanity entails cutting the existing pipes and redirecting them to the vanity’s centre. Reconfiguring sink drains is challenging because they demand p-traps to block sewer gases from leaking through the drain. 

Upgrading your bathroom enhances efficiency and liability in your washroom, making it more pleasant and accessible with every fixture fixed appropriately. If your current bathroom cannot exhibit these qualities, it’s high time you think about moving plumbing to fit vanity.

Pipefitters typically position water supply lines for vanities on the back wall underneath the sink or the sides of the cabinet walls beneath the sink. However, they run through the floor right under the sink in the middle of the vanity. Any of these spots will suffice.

Keep reading to find out more. 

Steps To Moving Plumbing To Fit Vanity

Rerouting pipes to suit your bathroom vanity does not have to be arduous. Check out the simple steps below: 

1) Preparing The Plumbing

You’ll need a marker, an adjustable wrench, a hacksaw, a drill, supply pipe, a 3/4-inch hole saw attachment and 90-degree push-to-fit elbow fittings. 

Step 1

Start by turning off the primary water valve (you will find it in the crawl or basement area) in your house. It will cut off the water supply to all the piping on the premises as you work. 

Open all the house’s taps to discharge as much water as possible from the plumbing.

Step 2

Wrap an adjustable wrench around the control valves on cold and hot-water pipes. To disconnect the supply lines, rotate the valves anticlockwise. 

Step 3

Measure from the edge of the sink to the middle. 

Mark the two areas two inches apart on the under surface of the vanity. For instance, if the sink’s midpoint measures 13 inches from the side, estimate 13 inches from the bottom of the vanity to the sink’s center and draw two markings 2 inches apart. 

Here, the dual supply lines will emerge through the vanity’s floor.

Step 4

Using a 3/4-inch drill bit, make holes through the marks made in the previous step since that is where you will find cold and hot-water pipes. 

Read also P trap for vanity with drawers

2) Installation Of New Supply Lines

Step 1 

Access the pipework on the bottom of the sink vanity. Access it from the basement or crawl area or take off the baseboard beneath the sink cabinet.

Step 2

Use a pipe-cutting tool or a hacksaw to cut the cold and hot water lines to provide at least 3 inches of gap between the bottom of the vanity sink and the pipes. 

Step 3

Install 90-degree compression elbows on the cold and hot water connections, with the fittings’ ends pointing toward the middle of the sink. 

Step 4

Cut two sets of supply pipes to sizes that go from the elbows to the slots for the incoming supply line connections. Insert the pipe portions into the elbow fittings. 

Step 5

Attach two more 90-degree elbow fittings to the supply pipes’ ends.

Step 6

Cut two 5 inch pieces of pipe. Insert the pieces into the holes in the vanity’s center and into the elbow adapters.

Step 7

Place the previous supply valves on either tip of the supply pipes and secure them using a wrench. 

Read also What to do when new vanity has drawers where pipes are

How To Conceal Waste Pipes Under Vanity

You have moved plumbing to fit the vanity, but the waste pipe seems out of place. Here are some ideas for hiding a waste pipe beneath a vanity:

1) Use Bottle Traps

Plumbers frequently install bottle traps on open vanities or wall basins where you can see the sewage pipe while entering the restroom. Bottle traps will cost you money, but they are inconspicuous and attractive. 

2) Hide It In The Vanity Cabinet

If your bathroom features a wall-hung vanity, the drainpipe should preferably come through the wall and into the vanity’s rear with a p-trap. An s-strap can also come in handy if your vanity has depth. 

The amount of waste entering the rear of the vanity would depend on how high it is. 

3) Integrating Chrome-plated Traps

It’s a little complicated, but it looks elegant on open vanities with uncovered waste and traps. A plumber installs and welds a chrome trap to the sink before detaching it to have it chrome plated.

Contingent on how active the chrome plater is, it might take a day or more. You can pick up the traps and take them to the site after chrome-plating them. 

If you opt for PVC, you can incorporate a chrome plate. However, ensure you use a clean PVC for effectiveness. 

4) Paint The Waste Pipe Out

You can use this approach if you are on a tight budget. Simply paint the drainpipe with the same color as your vanity. 

5) Box It Out

If a sewer pipe still seems messy after painting, contact your plumber to box it out.

Read also Alternatives when you have no room for p trap

FAQs on Moving Plumbing to fit vanity

Is It Difficult To Move Plumbing In A Bathroom?

Plumbing relocation could be labor-intensive and time-consuming; hence why you should plan for it beforehand and have faith in the specialists you’ve hired. But once completed, you will not have to worry about it for a long time. 

How Much Does It Cost To Reroute Plumbing?

The cost of reconfiguring a single line ranges from $650 to $1,500. It doesn’t include the expense of removing and replacing framing or drywall. 

The overall cost will vary greatly depending on factors, such as the length of the line and its accessibility.

What Do You Do If Your Vanity Is Too Small?

You can use caulk, a backer rod, filler straps, tiles, or backsplash to bridge the gap between the wall and vanity. It will depend on the size. 

You can also use shelving, a side cabinet, or a laundry basket if you have sufficient space. 

Is It Hard To Install A Bathroom Vanity?

Installing a bathroom vanity is not challenging, provided you have the right tools. The most important thing to remember is to cut off the water supply to the tap and disconnect water supply pipes from the shutdown valves. 

Can Sink Plumbing Be Moved?

You can relocate your sink if need be, but you have to contend with the venting of the sink drain. A drain with a vent facilitates a continuous flow of water. 

What Is The Rough-in Height For A Vanity Drain?

The height of the sink drain lines ranges from 18 to 20 inches. Plumbers usually install water supply pipes a few inches higher than the drain line and about 20-24 inches above the floor. 

Read also Can you reverse p trap

Tips on Moving Plumbing to Fit Vanity

From the post, moving plumbing to fit vanity does not have to be an arduous task. All you need are the proper tools for the job and knowledge about the location of water supply lines, how they function, and how to reroute them to fit your bathroom vanity.

If that is too much for you, you can always call a local plumber for help.

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