Leaking toilet repairs
A puddle beside the toilet, a damp patch that keeps coming back, or a cistern that never quite stops filling. Toilet leaks are easy to put off, but clean water and waste water both do damage to floors over time. From our base in Matraville we repair leaking toilets in homes across the southern Eastern Suburbs. We pinpoint where the water is coming from, explain your choices, and agree a fixed price with you before starting.
Where toilet leaks come from
Water at the base of the pan
Moisture seeping out from under the pan after a flush usually means the pan collar or seal connecting the toilet to the sewer pipe has perished, cracked or moved.
Cistern to pan joint
On close-coupled toilets the cistern sits on the pan with a rubber seal between them. When that seal or the mounting bolts wear, water drips down the back of the bowl each time you flush.
Inlet hose or stop tap
Braided flexible hoses and the small isolating tap behind the toilet can weep, corrode or burst. A failed hose is under mains pressure, so it can release a lot of water quickly.
Cistern running into the bowl
A worn outlet washer or faulty inlet valve lets water trickle into the pan constantly. You might not see a puddle, but it shows up on your water bill.
How we fix a leaking toilet
Finding the source comes first, because water travels. A drip from the inlet hose can run along the floor and look like a seal failure at the base, and condensation on a cold cistern in winter can be mistaken for a leak altogether. We dry everything off, flush, watch and test each connection until we know exactly which part is at fault.
From there the repair is usually straightforward:
- Pan collar or seal: we lift the pan, replace the connector, reseat it and refix it to the floor.
- Cistern to pan: new donut seal, washers and bolts, tightened evenly so the porcelain isn't stressed.
- Inlet supply: a new braided hose and, if it's stiff or dripping, a new isolating tap.
- Running cistern: replacement outlet washer, inlet valve or flush mechanism to suit your model.
If the pan or cistern is cracked, or the toilet is old enough that parts are no longer made, a repair may not last. In that case we'll show you the damage and price a toilet replacement alongside the repair, so you can compare before deciding.
Toilet leaks in southern Eastern Suburbs homes
In the older brick and fibro houses of Matraville, Maroubra, Malabar and Botany, toilets often connect to the sewer through aged collars and clay or cast iron pipe. Original toilets were sometimes set in mortar, and as the floor shifts slightly over the years that bond cracks and the seal underneath lets go. Some of these homes still have galvanised water pipe feeding the cistern, which can shed rust and wear out valves faster.
Newer townhouses and apartments in Pagewood and Eastgardens more often have back-to-wall or wall-faced suites, where the connections sit behind the pan. Leaks there can be harder to spot until a skirting board swells or the floor covering lifts. Upstairs bathrooms are especially worth acting on early, because water can show up as a stain on the ceiling below.
What you can safely check yourself
- Wipe the floor dry, flush, and watch closely where water first appears.
- Run a dry tissue along the inlet hose and around the isolating tap to feel for moisture.
- Add a few drops of food colouring to the cistern. If colour reaches the bowl without flushing, water is leaking through.
- Note whether the dampness turns up only after flushing, or all the time. That helps narrow it down.
- Know where the isolating tap is. If a hose is spraying, turn it off clockwise and call us.
Avoid sealing around the base with silicone to stop a leak. It hides the problem while water keeps soaking into the floor underneath.
Why locals call us
- We're based locally in Matraville
- Free quotes and a fixed price before any work starts
- Lifetime labour warranty on the work we do
- 100+ five-star reviews on Google
- Licensed plumbers and gasfitters, Lic. 398171C
Common questions
Why is there water around the base of my toilet?
The most likely cause is a failed pan collar or seal where the toilet meets the sewer pipe. It can also be a dripping inlet hose, a leak between cistern and pan, or condensation in cold weather. Testing each point tells us which it is.
Is a leaking toilet a health risk?
It can be. A leak from the pan seal carries waste water, which is unhygienic and can soak into flooring. Leaks from the cistern or hose are clean water, but they still damage floors and cabinetry if left.
Can a toilet leak cause damage I can't see?
Yes. Water can travel under tiles, into timber subfloors or through to the ceiling below an upstairs bathroom. Damp, soft or stained areas near the toilet are worth getting checked.
How do I know if my cistern is leaking into the bowl?
Listen for the cistern refilling when nobody has used it, or look for a fine ripple of water down the back of the bowl. The food colouring test in the cistern is the easiest way to confirm it.
Should I replace the flexible hose on my toilet?
If it's rusty, kinked, bulging or has been there for many years, swapping it is a small job that's well worth doing. A burst hose can flood a bathroom in a short time.
Can you repair my toilet, or will I need a new one?
Most leaks are fixed by replacing a seal, washer, hose or valve. A new toilet only makes sense when the porcelain is cracked or parts can't be sourced, and we'll give you prices for both if that's the case.
Will the bathroom be out of action for long?
Most toilet leak repairs are finished in a single visit, and you'll have a working toilet again once we leave.
See our full taps and toilets service, our toilet replacement page, or leak detection if you suspect water is escaping elsewhere. Toilet won't flush away properly? Read about a blocked toilet. We look after homes in Matraville, Little Bay, Kingsford and Pagewood.
Want to know more first? Read our free running toilets and dripping taps guide.