Tub Spout Installation Types

Bathtub spouts may need to be replaced for a few reasons: the diverter can get worn out so that it no longer blocks the water flow to divert the water to the showerhead. The threads that connect the spout to the pipe can corrode or crack allowing water to trickle along the pipe and drip inside the wall. The finish on the spout can corrode or flake off or the finish may just need updating if you decide to change any of the other fixtures in the bathroom.

Replacement is the best option for each of those issues and it is fairly simple. Before removing and replacing your tub spout, you will need to determine which type of tub spout you have and what kind you will need to replace it. There are two basic types of tub spouts, with diverter and the non-diverter style; within those types are different attachment options: slip-on with setscrew or the threaded type.

A slip-on style bathtub spout will have a setscrew, which is a small screw located on the bottom of the tub spout. The slip-fit tub spout is designed to slip onto a 1/2" copper pipe without the use of any threads. The end of the copper that will be used must be free of burrs or rough edges, when using this type of spout.

A threaded tub spout will not have a setscrew, and will twist off of the nipple or pipe. This style will either be a front-end threaded tub spout or a rear-end threaded tub spout. A front end threaded tub spout can be used with either a tub valve without a shower, or with a tub valve that has a shower diverter built into the tub valve.

The wall end spout (also called "rear-threaded" spout) offers added convenience because it can be connected to a tub spout stub-out nipple (1/2" or 3/4") at the wall end of the spout with a Celcon bushing. Rear threaded spouts can be used for either new or remodeling construction. Several models are available with a conventional diverter near the wall, or with a specialized outlet attachment that allow for the use of hand-held showers or riser tubs for exposed showers.

A telescoping spout is also a type of threaded bathtub spout which provides flexibility for many installation applications by allowing an adjustment, usually up to 1", to be made for the finished wall. The telescoping spout attaches to either a 1/2" or 3/4" nipple with a Celcon bushing.

Slip-On Bathtub Spouts

How to remove a slip-on tub spout:

Slip-Fit (non-threaded) Tub Spout

Remove any caulking around the wall end of the tub spout with a putty knife or razor.

Locate the setscrew, which is typically located on the underside of the spout, close to the wall. They are often very small so you may find it helpful to use a flashlight to locate the screw.

Then determine which tool you will need to remove it; most will require a hex/Allen wrench, some may use a small Philips head or flathead screwdriver. Loosen the screw, being careful not to drop it down the drain. Hint: Place a washcloth over the tub drain before loosening the setscrew to keep the screw from falling down the drain.

Once the setscrew is loose, use both hands to pull the tub spout straight out, away from the wall. If it's been there for a while it may be a bit stubborn. If so, you can try turning the spout slightly as you pull.

Before turning the spout, make sure the setscrew is loosened completely. If the setscrew is still tightened onto the pipe while turning the spout, you are likely to damage the pipe coming from the wall. If it's really stubborn, you can insert a screwdriver or a wrench into the tub spout opening for leverage, and turn the spout to loosen it. However, try not to wiggle the spout and pipe because too much jarring may cause problems with the plumbing in the wall.

How to install a slip-on tub spout:

Clean off the pipe coming from the wall if there is any build-up on the pipe. Slide the tub spout on the pipe until the tub spout meets the wall. Then secure the spout by tightening the setscrew.

Threaded Bathtub Spouts

How to remove threaded tub spout:

Use a large Pipe wrench to remove the spout by securing the wrench over the tub spout and turning it counterclockwise to loosen. Removing a threaded tub spout really is as easy as just unscrewing it!

Front End
Threaded Spout

Rear-End (Wall)
Threaded Spout

Adjustable Diverter
Tub Spout

Make sure that your new spout is the same length as your old one to avoid having to adjust the pipes or use an adapter.

Apply approximately 4-6 wraps of PTFE thread sealing tape.

Then apply some silicone caulking around the edge of the where the pipe meets the wall to prevent water from dripping behind the spout and into the shower wall.

Thread the spout onto the pipe, start off slowly so as not to cross threads. Tighten until snug and be sure to line up the spout vertically with the rest of the fixtures.