Common causes of burst pipes and emergency pipe leaks
Cold weather and exposed pipework
Cold weather can split pipework in lofts, garages, outside walls, garden rooms and unheated cupboards. Portsmouth does not experience the coldest winters in the country, but short freezing spells are still enough to damage vulnerable pipework. A frozen pipe may not leak until it thaws, which is why a burst pipe can appear suddenly after the temperature rises.
Old joints and failed fittings
A pipe leaking emergency is often caused by a failed compression joint, a corroded section of copper, a loose tap connector, a split flexible hose or an old valve that has started leaking under pressure. In older Portsmouth properties, plumbing may have been altered several times, leaving awkward pipe runs and fittings in hard-to-reach places.
DIY and accidental damage
Pipes can be damaged by screws, nails, drilling, flooring work, kitchen fitting, bathroom work or moving appliances. If a pipe is punctured, do not remove the screw or fitting unless advised, because it may be partly restricting the leak. Turn off the water and call for advice.
Pressure, movement and hidden weak points
Pipework expands, contracts and moves slightly as water heats, cools and flows. Over time, movement can stress joints, clips and valves. If pipework is poorly supported, pressure changes can make weak points fail sooner. This is common around washing machines, dishwashers, cylinders, toilets and pipework that has been boxed in without enough support.
Hot water cylinders, tanks and appliance connections
Leaks near a hot water cylinder, cold water tank, overflow pipe or associated valve can look like a burst pipe because the water may run continuously. A failed toilet inlet, basin tap connector, kitchen waste, dishwasher hose or washing machine valve can also release enough water to cause serious damage.
