How to Fix a Dripping Bathtub Faucet
A steady drip in the tub wastes water and stains the porcelain. This guide explains how to fix a dripping bathtub faucet, which parts usually fail and when it is easier to hire a plumber.
(972) 666-9243Call to confirm availabilityTypical Causes of a Dripping Tub Faucet
The most common cause is a worn rubber washer, seat or cartridge inside the faucet. Mineral buildup and aging O-rings can also leak. Texas water is often hard, which speeds up wear on small internal parts.
- Worn washers in compression faucets
- Damaged cartridge in single handle faucets
- Corroded valve seat
- Cracked O-rings
- Loose packing nut
A hot water drip is common because heat wears rubber faster. Fixing it quickly also saves energy.
Know Your Faucet Style
| Style | Look | Repair |
|---|---|---|
| Compression | Separate hot and cold handles that turn several times | Replace washers and seat |
| Cartridge | Single handle that pulls or rotates | Replace the cartridge |
| Ball | Single handle over a round base | Replace seals and springs |
| Ceramic disc | Smooth single handle | Replace the disc cartridge |
Remove the handle and compare the parts with replacements at the store.
Shut Off the Water and Gather Tools
- Find the shutoff valves for the bathroom or close the main
- Open the faucet to release pressure
- Plug the tub drain with a rag
- Gather a screwdriver, wrench, pliers and replacement parts
- Use a towel to protect the tub finish
- Take photos as you disassemble
How to Fix a Dripping Bathtub Faucet Step by Step
- Remove the handle by unscrewing the cap and screw.
- Take off the trim plate and any sleeve.
- Use a wrench to remove the packing nut or retaining clip.
- Pull out the stem or cartridge.
- Inspect and replace the washer, O-ring or cartridge.
- Clean the valve seat.
- Reassemble in reverse order.
- Turn the water on slowly and test.
If the Drip Continues
If the faucet still drips, the valve seat may be damaged or the wrong part may be installed. Some tub valves are behind the wall and need access panels. Our faucet repair service can replace valves and cartridges.
| Problem | Cause | Fix |
|---|---|---|
| Drip from spout | Worn seat or cartridge | Replace seat or cartridge |
| Drip from the handle | Worn O-ring or packing | Replace O-ring and tighten packing |
| Shower and tub both leak | Diverter issue | Replace diverter parts |
| Water behind the wall | Valve body leak | Call a plumber |
The Diverter and Shower Head Drip
If water drips from the shower head after you shut off the tub faucet, the diverter or valve may not be sealing. A worn cartridge or valve body issue can cause a constant dribble. Replace the cartridge first, and call a plumber if the valve is corroded or the wall needs opening.
Lift the knob and watch for leaks.
Inspect the valve inside the wall.
Replace if cracked or sticky.
Check for hidden leaks behind the plate.
Why It Is Worth Fixing Quickly
A drip can waste thousands of gallons a year, and constant moisture can stain porcelain and damage caulk. Repairing the faucet is inexpensive compared with water damage or a higher bill.
- Saves water and money
- Protects the tub finish
- Prevents mold from constant dampness
- Stops annoying noise
Working With a Cartridge Faucet
Single handle tub faucets almost always use a cartridge. After removing the handle and trim plate, you may see a retaining clip or nut that holds the cartridge in place. Remove it, then pull the cartridge straight out. Some cartridges need a puller tool. Take the old cartridge to the store to match the brand and size, since there are many near identical parts.
| Step | Tip |
|---|---|
| Remove the handle | Use a hex key if there is a set screw |
| Take off the trim plate | Score old caulk with a knife |
| Remove the clip | Note its position for reassembly |
| Pull the cartridge | Twist gently if it is stuck |
| Install the new cartridge | Match the orientation marks |
| Test | Turn on water slowly and check for leaks |
Do not pry against the tile or the tub. If the cartridge will not come out, stop and ask for help to avoid damaging the wall.
- Keep screws in a cup
- Lubricate the new cartridge with plumber grease
- Wipe the valve body clean
- Reinstall the clip firmly
- Test hot and cold in all positions
Replacing Washers and Seats
Older tubs with separate hot and cold handles use rubber washers that press against a seat. When the washer hardens, the faucet drips. Replace the washer and, if the seat is rough, use a seat wrench to remove and replace it. Apply a little grease and reinstall the stem gently.
Replace with the same size and shape.
Resurface or replace if pitted.
Check threads for wear.
Replace if the handle leaks.
- Use the correct size washer
- Do not overtighten the stem
- Keep the old parts for matching
- Test for drips after each step
How Long and How Much to Expect
For many homeowners, a cartridge swap takes an hour or two and costs only the price of the part. A plumber can usually complete the job faster and also checks the valve body and shutoffs. If the valve is behind a wall and needs replacement, plan for more time and a larger budget.
| Repair | Time | Difficulty |
|---|---|---|
| Washer replacement | 30 to 60 minutes | Easy |
| Cartridge replacement | 1 to 2 hours | Moderate |
| Seat replacement | 1 to 2 hours | Moderate |
| Valve body replacement | Half day | Professional recommended |
Finishing Touches After the Repair
Once the drip stops, tidy the surrounding area. Wipe away old caulk, dry the surface and apply fresh silicone around the trim plate and spout. This keeps water from entering the wall, where it can cause mold or rot. Allow the caulk to cure before showering.
- Remove old caulk fully before applying new
- Dry the area with a clean cloth
- Apply a thin, even bead of silicone
- Smooth it with a gloved finger
- Wait the recommended cure time
Check the tub faucet once a season. A quick look for drips, loose handles and cracked caulk catches small problems early.
Should turn smoothly without wobble.
Should seal tight to the wall.
Should be intact and white.
Should not drip after shutoff.
Tub Faucet Questions
Why is my bathtub faucet dripping even when it is off?
A worn washer, seat or cartridge is usually the cause.
Do I need to turn off the main water?
Often the bathroom shutoff is enough, but use the main if you cannot find it.
Is how to fix a dripping bathtub faucet the same for all models?
The steps are similar, but the parts depend on the valve type.
How much does a repair cost?
Parts are cheap, and a plumber can quote the labor after seeing the valve.
When should I call a plumber?
If you cannot remove the handle, the valve is corroded or water appears behind the wall.
Need Help With a Plumbing Problem in Rockwall?
Call us and describe what is happening. We will explain the options and when we can visit.
Call (972) 666-9243