Replacing shower taps (also called shower faucets or handles) is a practical way to fix leaks, improve water control, or update your bathroom’s appearance. Even if you’re not a professional plumber, the job is straightforward — as long as you use the right tools and follow the proper sequence.
This detailed guide explains how to replace shower taps step-by-step, covering both traditional hot/cold systems and modern single-handle or thermostatic types like those found in Global MoonShower shower systems.
Before you start, identify which type of shower tap your system uses.
| Type | Description | Water Control Style |
|---|---|---|
| Dual-handle taps | Separate hot and cold knobs | Traditional design; each tap controls one line |
| Single-lever mixer tap | One handle controls both temperature and flow | Common in modern homes |
| Thermostatic tap | Two knobs: one for temperature, one for water volume | Premium systems (e.g. Global MoonShower) |
| Exposed bar mixer | Entire mixing unit mounted on wall surface | Easy to replace without wall access |
This determines how many parts you’ll be replacing and what tools you’ll need.
| Tool / Material | Purpose |
|---|---|
| Adjustable wrench | Loosen and tighten tap fittings |
| Screwdrivers (Phillips and flathead) | Remove handles and trim |
| Allen key (hex wrench) | Loosen set screws on modern taps |
| Utility knife | Cut old silicone sealant |
| Teflon (plumber’s) tape | Seal pipe threads |
| Silicone sealant | Reseal trim or escutcheon plates |
| Cloth or rag | Protect metal finishes |
| Replacement tap set | New handles or mixer valve |
| Silicone grease | Lubricate O-rings and cartridges |
Tip: Always check that your new taps match your valve type and pipe spacing before purchase.
Locate your home’s main water shutoff valve or the bathroom shutoff valve.
Turn it off completely.
Open the shower taps to drain any remaining water and relieve pressure in the lines.
Pry off decorative caps (usually labeled H and C) with a flathead screwdriver.
Remove the screws underneath with a Phillips screwdriver.
Pull the handles straight off the stems.
If stuck from mineral buildup, apply vinegar around the base and wait 10 minutes.
Locate the set screw (often on the underside of the handle).
Use an Allen key to loosen it.
Slide the handle off the valve stem or cartridge.
Unscrew or pull off the trim plate (the decorative wall cover).
Use a utility knife to cut any silicone caulk around the edge.
Behind the trim, you’ll find the valve stem or cartridge.
Use an adjustable wrench to unscrew the valve or body from the plumbing connection.
Tip: Place a cloth under your work area — some residual water may still drip out.
Remove any old Teflon tape, rust, or sealant from the threads.
Wipe the wall surface clean with a cloth and mild cleaner.
Inspect the exposed pipes for corrosion or damage before installing the new taps.
Wrap Teflon tape clockwise around the pipe threads (2–3 layers).
Screw the new hot and cold tap bodies onto their respective outlets.
Tighten with an adjustable wrench — snug but not overtight.
Attach the new handles onto the stems.
Secure with screws and replace decorative caps.
Insert the new cartridge or valve assembly into the wall opening.
Tighten the retaining nut with your wrench.
Reattach the trim plate and handle.
Seal around the trim with a thin bead of clear silicone.
Ensure both wall connectors are level and spaced correctly.
Wrap threads with Teflon tape.
Mount the new bar mixer using the provided nuts.
Tighten gently and align horizontally.
Attach handles or knobs.
Pro Tip: Thermostatic units (like Global MoonShower) must be installed with correct flow direction — hot on the left, cold on the right — to maintain temperature accuracy.
Slowly open the main water valve.
Check both hot and cold taps for smooth operation.
Inspect all joints and seals for leaks.
Run water for a few minutes to flush out air and debris.
If hot and cold are reversed, simply swap the tap bodies or handles.
| Issue | Cause | Fix |
|---|---|---|
| Water dripping after shutoff | Worn washer or cartridge | Replace internal valve parts |
| Handle hard to turn | Limescale or overtightening | Remove and lubricate O-rings |
| Water temperature reversed | Hot/cold pipes swapped | Reinstall correctly |
| Low pressure after install | Debris in pipe or cartridge | Flush valve before sealing |
| Leaks behind trim | Poor silicone seal | Reapply silicone around plate |
| Task | Frequency | Purpose |
|---|---|---|
| Wipe tap surfaces dry | Daily | Prevents water spots |
| Clean aerator and cartridge | Every 6 months | Maintains flow and temperature |
| Replace O-rings | Every 2 years | Prevents leaks |
| Inspect silicone seal | Yearly | Avoids wall moisture damage |
| Lubricate valve stem | Yearly | Keeps operation smooth |
| Mistake | Problem | Solution |
|---|---|---|
| Forgetting to shut off water | Flooding | Always shut off supply first |
| Using no Teflon tape | Leaks at threads | Wrap all male threads |
| Overtightening fittings | Cracks pipes or valve | Tighten snugly, not forcefully |
| Not flushing pipes | Sediment clogs valve | Flush system before sealing |
| Using abrasive cleaners | Damages finish | Use mild soap or vinegar only |
| Step | Action |
|---|---|
| 1 | Turn off water supply |
| 2 | Remove old tap handles and valve |
| 3 | Clean pipe threads and wall surface |
| 4 | Install new taps or mixer valve |
| 5 | Tighten connections and reseal trim |
| 6 | Turn on water and test function |
Replacing your shower taps is a practical and cost-effective DIY upgrade. It can fix leaks, restore smooth temperature control, and modernize your shower’s look in less than an hour.
For thermostatic and designer systems like those by Global MoonShower, always use genuine compatible parts to maintain precise water balance and durability.
A properly installed set of new taps ensures your shower remains efficient, leak-free, and elegant for years to come.
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