Blocked Toilet, Overflowing Cistern & Sink Waste Repairs in Sligo
When the only toilet in a house or small business blocks and threatens to overflow onto the bathroom floor — or when a broken dual-flush valve runs water continuously into the pan — you need a fast, clean fix. We clear blocked toilets, shower traps, and kitchen sink wastes and replace broken cistern valves across Sligo in one visit.
Blocked Toilet & Cistern Repair Prices in Sligo
Upfront pricing for toilet and internal waste emergencies across Sligo:
| Toilet / Waste Emergency | Typical Price (incl. VAT) | What Is Included |
|---|---|---|
| Unblock Overflowing Toilet Pan or Soil Bend | €95 – €155 | High-pressure pneumatic plunger / 6ft professional closet auger clearance & flush test |
| Clear Blocked Kitchen Sink, Basin or Shower Waste Pipe | €95 – €145 | Dismantle U-trap, rod 40mm/50mm waste run with mechanical snake, re-seal trap |
| Replace Running / Broken Push-Button Dual-Flush Siphon | €110 – €165 | Supply & fit Fluidmaster/ Siamp dual-flush drop valve + close-coupling doughnut washer |
| Replace Noisy or Non-Filling Brass/Torbeck Cistern Inlet Valve | €105 – €155 | Fit brass-shanked bottom-entry or side-entry quiet fill valve |
Why Pouring Caustic Soda Down a Blocked Sink or Shower Makes It Worse
Hardware-shop caustic soda granules react with cold grease and soap scum inside a 40mm plastic sink waste by generating intense heat and turning into a solid white chemical soapstone plug that corrodes rubber trap washers and burns skin when the trap is opened. If a plunger doesn't clear a sink or toilet, leave chemicals out of the pipe — a mechanical rotary cable auger and kinetic water ram clears the blockage cleanly without damaging your uPVC waste joints.
Frequently Asked Questions: Blocked Toilet & Drains
What if the blockage is outside in the manhole rather than inside the toilet pan?
We lift the external AJ (Access Junction) or inspection chamber cover in your driveway/garden and rod the 100mm sewer line through to clear the backing-up trap.
Why is water constantly trickling into my toilet bowl 24 hours a day?
On modern push-button toilets, the rubber silicone seal at the bottom of the central drop-flush valve blisters or perishes after 5–8 years, letting water seep constantly into the bowl (and causing your attic tank or booster pump to refill all night). Replacing the flush valve stops it immediately.
Can you fix a leak coming from the back of the toilet where the big pipe goes into the wall?
Yes — replacing a perished 110mm rubber pan connector fin seal or close-coupled rubber doughnut ring between the cistern and pan stops clean or foul water pooling behind the pedestal.
Do you cover student rentals and commercial premises in Sligo Town?
Yes — landlords, letting agents, cafés, pubs, and offices across Sligo Town use our rapid callout service with VAT invoices emailed the same day.
Related Services & Guides
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- Airlocks, Shower Pumps & Low Water Pressure Repairs in Sligo — Clear tap/radiator airlocks & replace pumps
- Emergency Plumber Callout Cost in Sligo (2026 Transparent Rates) — Daytime, evening & weekend rate card
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