Water Coming From Overflow

Depending on the type of heating and hot water system you have this could be a few things. All are easy to diagnose and range from a few pounds to a few hundred pounds.   Follow the easy steps and we’ll find the problem.

1. Look where the overflowing pipe comes out of your house.  Is it from the eaves of the roof, near a bathroom / toilet  or near a boiler/hot water cylinder.

2.Look at the type of pipe the water is coming from what is the material is it metal of plastic.

Plastic pipe from eaves – constant flow -The water level in a tank is too high so it is running out the overflow. 

Plastic pipe from eaves – only when heating is on – Water level in central heating feed tank is too high when cold.

Plastic pipe from eaves – if water hasn’t been used for a while  – Ball valve has a slight leak that isn’t noticeable when water is being drawn off regularly.

Plastic pipe from near bathroom/toilet  – Water level in toilet cistern is too high.

Plastic pipe near a boiler – Could be the condensate pipe from a modern condensing boiler leaking.

Metal pipe near a boiler or hot water tank leaking – This is one of the safety valves opening on the central heating system/unvented cylinder.  The valve opens to release excess pressure from the system.