Is it from the eaves of the roof near a bathroom toilet or near a boiler hot water cylinder.
Overflow pipe dripping from roof.
However if it s at loft level and protrudes from the eaves of the roof then it could be coming from your cold water or central heating feed and expansion tank.
2 look at the type of pipe the water is coming from what is the material is it metal of plastic.
If the leaking pipe is at ground or first floor level then it s likely to be your bathroom overflow pipe dripping which will be coming from the toilet cistern.
For any roofing issues visit.
This could be either the cold water storage cistern which supplies the hot water cylinder and possibly the cold bathroom taps.
It s designed to release the pressure when there is too much of a load built up inside the water heater.
How to diagnose and repair a dripping overflow.
If there s water dripping or pouring from a pipe which points out of the house at loft level or from the eaves of the roof then one of your cold water tanks is overflowing.
If the leaking overflow pipe is at loft level or protrudes from the eaves of the roof then the source is either the cold water storage cistern or the smaller feed and expansion cistern that supplies the boiler if you have one.
A constant drip in your tpr valve is an indication we must know about.
Look where the overflowing pipe comes out of your house.