gutters & downpipes

AndyPandy

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Sep 4, 2009, 2:59:08 PM9/4/09

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I live in a row of terraced houses, 2nd from the end.

The end house roof gutter drain down his own down pipe into his own
drain, this down pipe being at the end of the terrace.

My house roof gutter drain into a down pipe which drains into the
gutter of my bay window, travels the length of the bay window into the
down pipe of my other neighbour, then into the street. Neither of us
have a drain.

All the houses share a down pipe except the end houses.

It's like Niagara falls when it rains and I'm finally acting. My end
neighbour has said I should block off my down pipe and lift the gutter
so it drains into his down pipe, leaving just the bay to drain into my
other neighbor.

I'm thinking that this will transfer the Niagara falls from my bay to
his gutter? Could his gutter cope? Can anyone think of a better
alternative?

Many thanks,
Andy
sorry about multiple post
AndyPandy

Unbeliever

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Sep 6, 2009, 1:38:57 PM9/6/09

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NOTE: I am presuming that you have water 'flooding' over the main roof
gutters.

If this is a fairly recent occurrence, then there a probability that gutter
and/or one or more of the roof outlets are blocked, thus forcing more water
to run further down the gutter?

If this happens, then it's possible that the lower outlets and downpipes are
of an insufficient size to take the extra load causing the overflow - and
blocking off your own downpipe and lifting your gutter could exacerbate the
problem for others (and you could also be held responsible for any water
damage caused to your neighbours property[s] as a result).

Solution:

1 Check for blockages in all of the gutter, outlets, swan-necks and
downpipes - if there any, clear them.

2 If there are no blockages, try changing the outlets and downpipe to a
larger diameter i.e, 65mm to 75mm - and this should clear the problem (also
do this to the bays if necessary).

Unbeliever

AndyPandy

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Sep 6, 2009, 2:31:17 PM9/6/09

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There's no problem with the roof gutters, its when it all drains into
the bay gutter that the falls appear because the bay gutter simply
can't cope with the volume of water from the roof. I can't install a
downpipe because I have no drain. Could my other neighbours gutter
cope with the water from his and my roof?
AndyPandy

ARWadsworth

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Sep 6, 2009, 3:16:40 PM9/6/09

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"AndyPandy" <bo...@bogus.com> wrote in message
news:smv7a5tf8si1ibd9u...@4ax.com...

Could you bypass the bay window and allow your roof fall pipe to discharge
on the floor?

It might mean altering the position of the fall pipe along the lenth of the
gutter.

Adam

Unbeliever

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Sep 6, 2009, 3:28:19 PM9/6/09

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AndyPandy,

I shall presume that there are no blockages in the bays' gutter, swan-neck
and down pipes and that the gutter fall has been checked and all is well - I
shall also presume that the bay gutter is around 100mm (4") and the down
pipe is 65mm (21/2")

If all of the above is correct, then what I would suggest that you get
together with the neighbour to share the costs and labour, and carry out the
following:

1 Strip out the old gutter and replace it with 114mm (41/2) or Marley
Deep Flow gutter [A] (Marley preferred, as this deep gutter will take
anything that the rain can throw at it) - making sure that any protruding
roof underfelting drops back into the gutter [B] and ensuring that there is
a good fall on the gutter (but not excessive, as that could cause even more
problems).

2 Change the outlet and downpipe from 65mm (21/2") to 75mm (3") with any
necessary toe-piece to aim the downflow away from the wall.

[A] See:
http://www.pbs-limited.co.uk/ProductType/Marley-Deepflow-Guttering-And-Downpipes.aspx

[B] Note that if the underfelt (if fitted) is not replaced as said (or is
damaged or missing), then again, it's possible for the water run-off in
heavy rain to literally 'bounce' between the gutter and roof and 'flood'
down the wall.

Unbeliever