Toilet Cistern Crack Repair in Weybridge
A homeowner in Weybridge noticed water on the floor behind their toilet. On inspection, they found a hairline crack in the side of the porcelain cistern that was weeping water slow...
Response time
2 hours
Time on site
2 hours
Cost range
£265
Warranty
12 months
The Problem
A homeowner in Weybridge noticed water on the floor behind their toilet. On inspection, they found a hairline crack in the side of the porcelain cistern that was weeping water slowly. The crack had appeared for no apparent reason and was gradually getting worse.
The toilet was a close-coupled suite, approximately 12 years old. The crack was on the side of the cistern, about 3 inches long, and was too deep to seal reliably — the cistern needed replacement.
The Diagnosis
We inspected the crack and confirmed it went through the porcelain wall — water was seeping through from the inside. While epoxy repair was theoretically possible, cracks in ceramic cisterns tend to propagate over time, especially with the thermal cycling of hot and cold fills, and the only reliable long-term solution was to replace the cistern.
The toilet pan was in excellent condition and did not need replacing. We sourced a matching cistern from the same manufacturer, which could be fitted to the existing pan without replacing the whole suite.
The Repair
We isolated the water supply via the isolation valve, drained the cracked cistern, and disconnected the flush mechanism and fill valve. The cracked cistern was unbolted from the wall and the pan, and removed carefully to avoid breaking the pan.
A new matching cistern was fitted to the existing pan with a new close-coupling seal and fixing kit. The fill valve and flush mechanism from the new cistern were connected, and the cistern was secured to the wall. The toilet was tested — fill, flush, and no leaks.
Confirmed cracked cistern needed replacement
Removed cracked cistern, kept existing pan
Fitted new matching cistern and tested
Outcome & Advice to the Homeowner
The cracked cistern was replaced and the toilet was fully functional again — no more water on the floor. The homeowner was pleased that only the cistern needed replacing, not the entire toilet, which saved them money and kept the existing pan that matched their bathroom.
We recommended keeping an eye on the cistern for any future cracking, particularly at the fixing points, and advised against over-tightening the wall fixings which can stress the porcelain.
Job Summary
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