HI, noticed that there is a little water coming from the downpipes near the edge of the roof, not a lot is coming out and it is only running out at some point during the night not at any point during the day or when any of the taps/toilet/shower are used. Had look at the tank in the loft, there is a slight trickle of water coming from out of the bottom of the valve roughly where the washer would be at a guess (pic attached of it) – the ball on the end of the valve arm seems fine, isn't cracked or filled with water itself so I'm guessing the washer or valve itself needs replacing?
Will have a look at those – one last layman question, pipe that the valve goes onto looks like it's about 20-22mm (hard to get an exact measurement given the loft space!) so would I be looking for a 1/2 or 3/4 valve to fit on there?
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