Shower Faucet Leaking or Dripping
A shower faucet that keeps dripping after the handle is off usually means the valve inside the wall is no longer sealing. The exact fix depends on the valve style: single-handle showers usually need a cartridge, older two-handle valves may need stem packing, washers, or seats, pressure-balancing valves can stick from mineral deposits, and tub/shower combinations can leak through a failed diverter. Work methodically before buying parts because shower cartridges are brand- and series-specific.
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Common Symptoms
- Water drips from the showerhead after the handle is fully off
- Tub spout keeps running when the diverter is pulled for shower mode
- Water leaks around a shower handle or trim plate
- Single-handle valve no longer shuts off cleanly
- Two-handle shower needs extra force to stop dripping
- Water temperature surges or changes when another fixture runs
- Drip returns shortly after replacing the showerhead
Most Likely Causes
- 1
Worn Single-Handle Cartridge
Most modern shower valves use a replaceable cartridge that controls both temperature and water flow. Internal seals wear, hard-water minerals scratch the sealing surfaces, and the cartridge can no longer close fully. Replacing the cartridge is the standard repair for a showerhead that drips after shutoff.
- 2
Two-Handle Stem Packing or Washer Failure
Older two-handle tub and shower valves use separate hot and cold stems. A leak from the showerhead usually comes from a worn stem washer or valve seat, while water around the handle points to loose or dried stem packing. Packing can often be snugged or replaced without opening the wall.
- 3
Sticking Pressure-Balancing Spool
Pressure-balancing valves protect against scalding by equalizing hot and cold pressure. Mineral buildup can make the balancing spool stick, causing unstable temperature, weak flow, or incomplete shutoff. Cartridge replacement may not fix this if the separate balancing spool is the part sticking.
- 4
Tub/Shower Diverter Valve Leak
In tub/shower combinations, the diverter sends water to the showerhead. A worn tub spout diverter, transfer valve, or diverter cartridge can let water leak from the tub spout during a shower or send a weak stream to the showerhead even when the main valve is working.
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Quick DIY Checks
Never remove a shower cartridge, stem, bonnet nut, or diverter while the water supply is on. Shower valves are under full line pressure and can release hot water into the wall or shower at high velocity.
After any cartridge or pressure-balancing repair, test the maximum hot temperature before normal use. A reversed or misaligned cartridge can create scalding water even if the handle looks correctly positioned.
- 1Step 1 — identify the valve style before buying parts: one handle usually means a cartridge or pressure-balancing valve; two handles usually means hot and cold stems with washers, seats, and packing; a separate third handle or push-button control usually means a diverter valve. Photograph the trim, handle, and any brand logo.
- 2Step 2 — shut off water and relieve pressure: close the dedicated shower service stops if accessible behind an access panel, or shut off the main water supply. Open the shower valve to relieve pressure, then cover the tub or shower drain so small screws and retaining clips cannot fall in.
- 3Step 3 — remove the handle and trim carefully: pry off the handle cap, remove the Phillips or hex set screw, and pull the handle straight off. Remove the escutcheon screws and trim plate. Keep parts in order and take a photo before removing clips, collars, or stop tubes.
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Repair vs Replace
Most shower faucet leaks are caused by serviceable internal parts that are designed to be replaced from the front of the valve. Replace the full valve body only if it is cracked, badly corroded, discontinued with no available parts, or being upgraded during a remodel.
Est. Repair Cost
$10–$50 for cartridge, stem packing, washers, seats, or diverter parts
Est. Replacement Cost
$250–$800+ for a plumber to replace the valve body and patch wall access
Recommended Tools & Parts
- Buy on Amazon →
Moen 1222 Posi-Temp Shower Cartridge
Common OEM replacement cartridge for Moen Posi-Temp single-handle shower valves. Fixes dripping, hard shutoff, and poor mixing when the existing cartridge seals are worn.
$20–$35
- Buy on Amazon →
Danco Shower Stem Repair Kit
Assorted stem washers, O-rings, screws, and packing for many two-handle shower valves. Useful when the leak source is a compression stem washer or handle packing rather than a cartridge.
$8–$18
- Buy on Amazon →
Universal Shower Cartridge Puller
Puller tool for stuck shower cartridges. Applies straight outward force to reduce the chance of cracking the valve body or bending the cartridge stem during removal.
$12–$25
- Buy on Amazon →
Tub Spout with Diverter
Replacement diverter tub spout for tub/shower combinations where water continues from the spout during shower mode. Match slip-fit or threaded connection before ordering.
$15–$30
Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.
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Related Repair Guides
This section combines editorial `relatedSlugs` from the article source with metadata-based matches so each guide links deeper into the repair library.
Shower Faucet Dripping — Fix a Leaky Shower Valve Without Calling a Plumber
Shower faucet dripping even when off? A worn cartridge or valve seat is almost always the culprit — a $15–$40 part and 45–90 minutes stops the drip for good.
Read guide →Shower Valve Stuck or Hard to Turn
Shower handle won't budge or requires extreme force to turn? Mineral deposits and corrosion are the usual culprits. Learn how to free a stuck shower valve yourself — often without calling a plumber.
Read guide →Shower Low Water Pressure: Fix Your Weak Shower in an Hour
Weak shower pressure is usually a clogged showerhead or restricted flow — a 30-minute vinegar soak often fixes it completely.
Read guide →Shower Arm Leaking at Wall
Water dripping where the shower arm meets the wall? Rewrap the Teflon tape — a 20-minute fix that stops the leak cold.
Read guide →Toilet Running Constantly
Hear water trickling into the bowl constantly? A worn flapper is the most common cause — a $5 fix.
Read guide →Low Water Pressure in House — Common Causes and Fixes
Weak pressure throughout your house? A partially closed main shutoff or clogged aerators are the fastest fixes — each takes 5–10 minutes.
Read guide →Keep Exploring
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Frequently Asked Questions
- How do I know whether the hot or cold side is leaking on a two-handle shower?
- Turn off the hot water supply first, then check whether the drip stops. If it stops, the hot stem washer or seat is leaking. If it continues, test the cold side. Many older showers need both stems rebuilt because both washers and packing are the same age.
- Can a bad showerhead cause a faucet to drip?
- A showerhead can hold water and drip for a few minutes after use, but it cannot create a continuous drip hours later. A persistent drip means water is passing through the valve cartridge, stem washer, seat, or diverter.
- Why does water still come from the tub spout when the shower is on?
- That points to the diverter, not usually the main shower cartridge. Replace the diverter tub spout, diverter stem, or diverter cartridge depending on your tub/shower setup. A worn diverter lets some water bypass the shower riser and fall out of the spout.
- Do I need to open the wall to replace a shower cartridge?
- Usually no. Cartridges, stems, packing, and many diverter parts are designed to come out through the finished trim opening. Wall access is needed only for damaged valve bodies, inaccessible shutoffs, or full valve replacement.
- What should I do if the new cartridge does not stop the leak?
- Recheck cartridge orientation and that the retaining clip or bonnet is fully seated. If the leak remains, inspect the valve seat, pressure-balancing spool, and diverter. A scratched valve body bore or pitted seat can keep a new cartridge or washer from sealing.