Toilet troubleshooting guides
Troubleshoot weak flushes, slow cistern refill, running toilets and other common toilet faults with step-by-step checks.
Common problems
Toilet weak flush or slow refill: quick checks
Advice Hub / Toilets Toilet weak flush or slow refill: quick checks Check time: 5–10 minutes • Difficulty: Easy checks • Safety: Low risk Quick answer A slow refill usually points to something restricting the water supply into the cistern, such as a partly closed isolation valve. A weak flush usually points to a low…
Toilet won’t stop running: likely causes
Advice Hub / Toilets Toilet won’t stop running: likely causes Check time: 5–10 minutes • Difficulty: Easy checks • Safety: Low risk Quick answer A toilet that keeps running is usually caused by either the fill valve not shutting off properly, or water trickling through a worn flush seal into the pan. Watch where the…