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Howard-
Ok thanks - was torn as it seems lazy but then a long guttering pipe going along the top of the roof would look rubbish!
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I disagree, ours does that and in torrential rain, it creates a waterfall effect in front of the french windows. Also creates a tide mark on the rooflight that is slightly in the flow of the water.
Lw.
cjr
On a single story rear extension of a terraced house where you have the downpipe from the main roof guttering; would you expect the rain water to dump out of the downpipe onto the new lower roof, trickle over the new slates then go into another gutter then along to another downpipe into the ground/drain or would you expect some kind of linking pipework between the two gutters?