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Postby paul68 » Fri Nov 21, 2008 1:05 pm

I've spotted a house i would like to buy and it has several niggles.

The one i want to ask abour here is to do with the drainage of a series of flat roofs the house has.

It is a bungalow with two flat roof dormers fromt and back. To tje front is also an entrance vestibule, also flat roofed.

The drainage is such that surfaec water enters a gutter on the dormer flat roof, then down a downpipe which exits onto the pitched roof below the dormer

This then falls down the pitched roof onto the flat roof of the vestibule. This then drains into a gutter, down a downpipe and directly onto a gravel area in front of the vestibule.

what concerns me is th fact that it doesnt go to the surface water drainage system.

Does this all seem something of a lashup and possibly damaging, or is it more likely a cheap, yet regular solution to not having to break into the existing surface water system?

thanks for any help.

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Postby welsh brickie » Fri Nov 21, 2008 6:20 pm

Not so much of a problem really.
Yes ideally it should go into a gully,but how about fitting a water butt
its cheaper,and you can use the water for your garden, saving on water bills
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Postby htg engineer » Sat Dec 06, 2008 3:59 pm

As long as the ground and gravel does not bridge the DPC, then it should be ok as this ground will get wet anyway when it rains.

Or install a soakaway, you'd install gully run the pipe underground away from the house into a chamber - the water will then soakaway into the surrounding soil. LIke it does now - but away from the house.

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Postby TheDoctor5 » Mon Jan 26, 2009 9:23 am

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