How to repair a leaking shower faucet
Fixing the drip starts with knowing which valve is behind your handle. Compression, cartridge, ball, and ceramic disc valves all repair differently.
Start by finding out which valve you have
A shower that drips after you turn it off is almost always a worn internal part. The part depends on the valve type, and each type has a different repair. Guessing leads to wasted trips to the hardware store.
Look at the handle first. Two separate handles for hot and cold usually mean compression or two-handle cartridge valves. A single handle usually means a cartridge, ball, or ceramic disc valve.
| Valve type | How it feels and looks | Usual cause of a drip | Part to replace |
|---|---|---|---|
| Compression | Two handles, turn many times to close | Worn rubber washer or damaged seat | Washer and seat |
| Cartridge | Single handle that slides or pivots, or two handles with a quarter turn | Worn O-rings or a cracked cartridge | Cartridge or O-rings |
| Ball | Single lever that rotates over a rounded cap | Worn seats and springs | Seat and spring kit |
| Ceramic disc | Single lever on a wide cylindrical body | Cracked disc or worn seals | Disc cartridge |
Pull the handle to confirm
Turn off the water first. Look for a shower stop on the valve, or close the main shutoff if there is none. Open the shower to drain the line and plug the tub drain so no screw falls in.
Pop off the cap on the handle and remove the screw or set screw. Slide the handle off, then remove the trim plate. The valve body is behind it, and its shape tells you the type.
Repair steps for a compression valve
- Unscrew the bonnet nut with an adjustable wrench.
- Lift out the stem and look at the rubber washer at its tip.
- Replace the washer and check the brass seat for scoring.
- If the seat is rough, smooth it with a seat dresser or replace it.
- Coat the threads with plumber's grease and reassemble.
Repair steps for a cartridge or ceramic disc valve
- Remove the retaining clip, nut, or screws holding the cartridge.
- Note the cartridge position, because most must go back facing the same way.
- Pull the cartridge straight out with pliers or a puller made for it.
- Take it to a supplier and match the brand, size, and stem splines exactly.
- Lightly grease the new O-rings, seat the cartridge, and secure the retainer.
Call and a plumber can replace the valve and test the shower on site.
Repair steps for a ball valve
A ball valve needs a repair kit with new inlet seats, springs, and a cam. Remove the cap, collar, and ball, then drop out the old seats with a small screwdriver. Press the new seats and springs in, set the ball, and tighten the cap. Match the kit to the brand stamped on the body.
If the valve body is pitted or corroded, no kit will seal it. At that point the whole valve needs to be replaced, which means opening the wall.
When to stop and call a plumber
- The shutoff does not hold, so water keeps flowing.
- The valve is pitted or the stem is frozen in place.
- You see water stains on the ceiling or wall behind the shower.
- The leak continues after you replace the cartridge.
- The wall must be opened to reach the valve.
Stains behind the wall suggest the leak is not at the handle at all. A plumber can use leak detection to find the real source before tile is cut. For a straightforward drip, faucet repair often takes a single visit.
We also serve Bloomingdale and Roselle, so homeowners nearby can use the same advice and the same help.
Tools and parts to gather first
You need a few basics before you start. A hex key set and a Phillips screwdriver handle most handles. Add an adjustable wrench, pliers, a small utility knife, plumber's grease, and a cloth to cover the drain.
Take the old washer, O-ring, or cartridge with you to the supplier. Matching by sight and by feel is far more reliable than matching by name. Brand marks are often stamped on the cartridge, and they save time.
Mistakes that cause a second leak
Overtightening the bonnet or retaining nut can crack the valve body. Forcing a cartridge in the wrong direction can score the walls. Reusing an old, flattened O-ring seals poorly even if it looks fine.
Another common mistake is forgetting to turn the water back on slowly. A sudden surge can blow a loose cartridge out of its seat. Open the stop a quarter at a time and watch the trim for beads of water.
Finish by running the shower hot and cold for a few minutes. Check the ceiling below and the wall around the trim for damp spots after an hour.
Why a small drip is worth fixing
A drip of a few drops a minute adds up over a month. It also leaves mineral stains on the tub and wears the seat further each day. Fixing it early usually means a washer or O-ring instead of a whole valve.
A constant drip into an old cast iron tub can stain the enamel. It also puts steady load on the drain and trap, which is rarely a problem but is easy to prevent. Replace the worn part as soon as you can shut the water off.
If you rent or share the house, tell the owner promptly. Hidden leaks behind a shower wall can rot framing before anyone sees a stain.
Keep the old cartridge or stem in a drawer labeled with the date. If the new part fails early, you have a reference for the supplier and a way to compare wear.
Photos of each step help when you put the valve back together. Snap one after every part comes off.
Who may work on your plumbing in Hanover Park
The Illinois Plumbing Code is 77 Ill. Adm. Code 890, and the Illinois Department of Public Health licenses plumbers. Hanover Park's Inspectional Services Division requires plumbing contractors to be registered with the village before permits are issued. Owner-occupants can use a Homeowner Plumbing Affidavit to do their own work, and may only hire Illinois-licensed plumbers to assist.
In practice, you can swap a cartridge yourself in your own home, but anyone you pay must be a licensed plumber. IDPH offers an online licence verification tool, so check before you hire.
Source type: Village of Hanover Park Inspectional Services and IDPH
Codes and standards worth knowing
Faucet repairs fall under the Illinois Plumbing Code (77 Ill. Adm. Code 890). The state's license lookup lets you confirm a plumber's credentials before a visit.
Common questions
Many last for years, but hard water and frequent use wear the seals faster. A drip after the handle is shut is the usual sign that the cartridge is due.
A slow drip usually means a worn washer, seat, or O-ring. It wastes water around the clock, so repair it before the seat gets scored.
Only if the valve has no built-in stops. Many shower valves have screwdriver stops inside the trim, which let you shut off just that valve.
Mineral buildup can lock the handle on its splines. Soak the joint in vinegar for a while, then pull with a handle puller. Forcing it can crack the stem.
A slow drip can wait a day. If water is leaking inside the wall or the shutoff will not close, treat it as urgent, because wet drywall deteriorates quickly.
Illinois plumbers hold an IDPH 058 licence, and the state has an online lookup tool. Hanover Park also requires contractors to register with the village before permits are issued.
Need a plumber in Hanover Park?
Call and a licensed local plumber will pick up around the clock.