A dripping tap might seem minor, but that constant drip can increase your water bills significantly while driving you mad at night. Learning how to change a tap washer empowers Melbourne homeowners to tackle this common plumbing issue, though knowing when to call a professional plumber remains equally important for protecting your home.
Worn tap washers cause most leaking taps in Australian homes. These small rubber washers inside the tap create a watertight seal when the tap is turned off. Over time, wear and tear, mineral deposits, and constant pressure degrade these washers, allowing water to flow even when taps are fully closed. Understanding tap washer replacement helps you decide between DIY repairs and calling a plumber.
Understanding Tap Washers and When They Need Changing
Tap washers come in different shapes and sizes depending on your tap type and manufacturer. Most Melbourne homes use standard 12mm or 13mm washers, though older properties might have imperial sizes. Before attempting to change a tap washer, identifying the right replacement washer ensures successful repairs.
Signs You Need to Change the Tap Washer:
- Constant dripping from spout when tap closed
- Need to tighten tap handle excessively to stop flow
- Water leak around tap base or handle
- Unusual noises when turning taps
- Visible limescale buildup on tap seat
A single dripping tap wastes up to 20,000 litres annually - enough to significantly impact quarterly water bills. Early tap washer replacement prevents water wastage and more serious plumbing damage.
Tools and Materials for Tap Washer Replacement
Before starting, gather these essential tools and materials:
| Tool/Material | Purpose | Alternative |
|---|---|---|
| Adjustable spanner | Remove tap bonnet | Shifting spanner |
| Screwdriver (flathead) | Remove tap handle covers | Phillips head for some taps |
| Pliers | Grip and remove old washer | Multi-grips |
| New tap washers | Replace worn washers | Universal washer kit |
| Cloth/bucket | Catch remaining water | Old towels |
| Reseating tool | Smooth damaged tap seat | Professional repair |
Most hardware stores stock tap washer kits containing various sizes. Purchasing a complete kit ensures you have the right washer without multiple trips to the store.
How to Turn Off the Water Supply
Before changing the tap washer, you must turn off the water supply to prevent flooding:
- Locate the main water meter - Usually at your property boundary
- Turn the main valve clockwise to shut off water supply
- Check isolation valves - Some properties have individual shut-offs under sinks
- Turn on the tap to release water pressure and drain pipes
- Place bucket underneath to catch excess water
For units and apartments, isolation valves might be inside cupboards or behind access panels. If you cannot locate shut-off valves, contact Lexity.
Simple Steps to Change a Tap Washer
Follow these easy steps for successful tap washer replacement:
Step 1: Remove the Tap Handle
Using a flathead screwdriver, carefully remove decorative caps marked “hot” or “cold”. Unscrew the handle screw and lift off the tap handle. Some handles pull straight off, while others need gentle twisting.
Step 2: Remove the Tap Bonnet
Place your adjustable spanner around the tap bonnet (the hexagonal brass section). Turn anticlockwise to unscrew. Hold the tap body steady to prevent damage to basin connections.
Step 3: Remove the Old Washer
The worn tap washer sits at the bonnet base, sometimes held by a small nut or screw. Use pliers to remove the old washer, noting its position and orientation for the new washer installation.
Step 4: Inspect the Tap Seat
Check the tap seat (where the washer sits) for damage, corrosion, or limescale. Damaged seats prevent proper sealing even with new washers. Clean minor deposits with steel wool, but severe damage requires professional reseating.
Step 5: Install the New Washer
Place the replacement washer into position, ensuring it sits flat and secure. If there’s a holding nut, tighten gently - overtightening can damage the new washer.
Step 6: Reassemble the Tap
Reverse the removal process:
- Screw tap bonnet back clockwise (hand-tight plus quarter turn)
- Replace tap handle and secure with screw
- Replace decorative cap
Step 7: Test Your Repaired Tap
Turn the water supply back on slowly. Check for leaks around the tap body and ensure the drip has stopped. Run both hot and cold taps to flush any debris.
How to Change a Tap Washer Without Turning Off Water
While not recommended, emergency situations might require changing a tap washer without turning off the water supply. This risky method only works for cold water taps:
- Turn the tap handle to full open position
- Quickly unscrew the bonnet while water flows
- Have someone ready to turn off mains if needed
- Replace washer rapidly while managing water flow
- Reassemble quickly to minimise water damage
This method risks flooding and should only be attempted when absolutely necessary. Professional emergency plumbers handle these situations safely.
Common Tap Washer Problems and Solutions
Even simple tap washer changes can encounter complications:
Stuck Tap Bonnet Years of mineral buildup can seize bonnets. Apply penetrating oil and wait 30 minutes before attempting removal. Forcing stuck parts damages taps permanently.
Damaged Tap Seat If new washers still leak, the tap seat needs resurfacing. Professional plumbers use specialised reseating tools to restore smooth surfaces.
Mixer Tap Complications Mixer taps require different techniques and often ceramic disc cartridges instead of traditional washers. These complex repairs typically need professional expertise.
Body Washer Leaks Leaks around the tap stem indicate body washer failure. This involves deeper disassembly and risks damaging internal components.
When to Call a Professional Plumber
Certain situations require professional plumbing work beyond DIY capabilities:
- Heritage or antique taps requiring specialised parts
- Persistent leaks after washer replacement
- Wall-mounted taps with concealed plumbing
- Multiple tap failures suggesting systemic issues
- Damaged threads or cracked tap bodies
- Commercial properties requiring compliance certification
Remember that plumbing regulations in Victoria require licensed plumbers for certain repairs. Incorrect DIY repairs can void insurance and cause expensive water damage.
Preventing Future Tap Washer Problems
Regular maintenance extends tap washer life and prevents leaks:
- Don’t overtighten taps - this crushes washers prematurely
- Clean tap aerators quarterly to maintain proper water flow
- Address limescale buildup before it damages components
- Fix drips immediately before they worsen
- Consider water pressure issues that accelerate wear
- Schedule annual plumbing inspections for early problem detection
Quality tap washers last 1-2 years with normal use, though high water pressure or hard water reduces lifespan significantly.
Professional Tap Repair Services in Melbourne
While changing tap washers seems straightforward, complications often arise requiring professional expertise. Whether dealing with antique taps, persistent leaks after DIY attempts, or complex mixer tap systems, Lexity’s licensed plumbers provide comprehensive tap repair services throughout Melbourne.
Our team (Plumbing Licence 111639) handles everything from simple washer replacements to complete tap reconstructions, always arriving with boot covers on and drop sheets down to protect your home. We identify underlying issues like damaged seats or excessive water pressure that cause repeated failures, providing lasting solutions backed by our Lifetime Workmanship Guarantee.
Don’t let dripping taps waste water and money, call Lexity on 1300 993 447 for professional tap repairs with fixed upfront pricing, or complete our online enquiry form for prompt, tidy service that stops leaks permanently.
