Fix Your Shower Diverter: Stop Water Dribble in 1-2 Hours

Difficulty: Moderate
Time: 1-2 hours
Cost: $15-45

Why You'll Like This

Got a shower diverter that's driving you nuts? You pull the little knob or flip the lever, and the tub still dribbles like a leaky faucet. Been there. This repair tackles one of the most annoying bathroom problems with tools you probably already have. You'll save the $150-550 that professional replacement costs (Angi), and you'll actually learn how your plumbing works. Best part? Most fixes take under two hours and use parts that won't break the bank.

Cleanup & Disposal

• Store leftover plumber's tape and washers in a labeled container for future repairs
• Toss old rubber washers and corroded metal parts in regular trash
• Pour the used vinegar down the drain, it helps cut mineral buildup
• Wipe down tools and work surfaces to prevent water damage
• Pull the drain tape and run water briefly to clear debris

Troubleshooting

Problem: Water still flows from tub spout during shower → Fix: Check that the rubber washer is properly seated and the diverter moves through its full range

Problem: Low water pressure after repair → Fix: Remove the showerhead and check for debris, make sure the diverter is not partially engaged

Problem: Diverter handle feels loose or wobbly → Fix: Tighten mounting screws behind the faceplate, replace the handle if threads are stripped

Problem: Diverter works but makes a squealing noise → Fix: Lubricate moving parts with plumber's silicone grease, replace if internal components are worn

When to call in the pros, and when to keep going

Many diverter repairs are DIY friendly, but some are not worth the drywall dust. If your diverter sits behind the wall or you have a complex three-valve setup, the job can mean tile removal and real risk of bathroom damage (Neighbourhood Plumbing).

Temperature control trouble often points past the diverter and into mixing valves or pressure-balancing parts, which need broader diagnosis (Angi).

Professional shower valve replacement typically runs $150-550 for most homeowners (Angi). You get labor, code compliance, and a warranty.

DIY decision framework, go for it if you can access the parts, identify the failure, and source exact replacements. Call a pro for behind-wall diverters, multi-valve systems, or when temperature issues suggest a bigger plumbing problem.

The process is quick and straightforward for accessible diverters (Mr. Rooter Canada). Start with the simple fixes, then decide if the deeper work fits your comfort and your Saturday.