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Get clear, step-by-step advice for common plumbing issues. Know what to check safely, when to stop, and what to do next.
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Browse by problem type
Find guides organized by the issue you’re facing.
🔥 Boilers & Heating
Boiler faults, pressure issues, hot water problems and heating circulation faults.
🌡️ Radiators
Cold radiators, trapped air, balancing issues and uneven heating problems.
🌊 Drains & Blockages
Slow drainage, blocked sinks, outside drain issues and bad smells.
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1
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Find the guide for your specific problem using search or categories.
2
Follow Safe Checks
Clear, step-by-step checks and likely causes.
3
Know When to Stop
We tell you when to stop DIY and call a professional.
4
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Safety First
If you smell gas, have a CO alarm sounding, see scorching/soot, or water near electrics—stop and contact an emergency engineer.
Latest troubleshooting guides
Recent practical advice from the site.
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Outside drain overflowing after heavy rain: surface water vs foul drainage
Advice Hub / Drains & Blockages Outside drain overflowing after heavy rain: surface water vs foul drainage Check time: 10–15 minutes • Difficulty: Easy checks • Safety: Low risk Quick answer If an outside drain or gully only overflows during or after heavy rain, this points more towards a surface water drainage issue — rainwater…
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Water pressure dropping when a tap runs: what it can mean
Advice Hub / Water Pressure Water pressure dropping when a tap runs: what it can mean Check time: 5–10 minutes • Difficulty: Easy checks • Safety: Low risk Quick answer If pressure noticeably drops at one tap or fixture when another is turned on elsewhere, this is often about how flow is shared across your…
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Radiator not heating after bleeding: what to check
Advice Hub / Radiators Radiator not heating after bleeding: what to check Check time: 5–10 minutes • Difficulty: Easy checks • Safety: Low risk Quick answer If a radiator is still cold after bleeding, trapped air likely wasn’t the actual cause — the real issue may be a closed valve, restricted flow, or sludge inside…
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Radiator valve leaking: what to check and when to call a plumber
Advice Hub / Radiators Radiator valve leaking: what to check and when to call a plumber Check time: 5–10 minutes • Difficulty: Easy checks • Safety: Medium risk Quick answer A leaking radiator valve is usually caused by a worn seal, a loose connection, or a valve that’s not fully closed. In many cases you…
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Boiler making a loud vibrating noise: what to check
Advice Hub / Boilers & Heating Boiler making a loud vibrating noise: what to check Check time: 5–10 minutes • Difficulty: Easy checks • Safety: Low risk Quick answer A vibrating or humming noise from a boiler is often different from banging or rumbling, and can be linked to the pump, loose panels, or fan…
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TRV valve faults explained
Advice Hub / Radiators TRV valve faults explained Check time: 5 minutes • Difficulty: Easy checks • Safety: Low risk Quick answer A TRV (thermostatic radiator valve) is the valve, usually with a numbered dial, that controls how much hot water flows into a radiator based on room temperature. When it faults, a radiator might…
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