External drain join/seal leaking - What to use to seal it ??

18 Jan 2007
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United Kingdom

We seem to have a problem with an outside drain letting water from the kitchen waste into the void under the house. It appears to be the seal that has gone between the downpipe that the drain lid sits upon & the bend below taking it away to the main drain (this is all outside)

The drain isn't blocked as I stuck a hose in the bend & the water level didn't increase (didn't decrease either so it looks like its not very inclined towards the main drain)

House is 70 years old & parts in question are Ceramic - what can I use to seal it back up ?
Cement ?
something else more suitable ?

Thanks for any help.

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Are you sure it isnt a blocked drain?

Seen that before and the whole void underneath house had about 3foot of water.(dunno how people in house didnt smell it)
Did a bit more investigation last night by jamming a small bore plastic pipe all round the seal I thought was the culprit & blasting a hose down it, no water came through under the house. Then I blocked the end of the lead pipe feeding into the drain & let a half basin down, it all ended up under the house, turns out the original lead pipe is holed in a few places & was letting down some of the water.

Looks a nightmare job but least I haven't broken up the concrete outside to find this out later !!!!!!!!


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Well just spent a lovely 2 hrs under the house breaking this pipe out of the foundations with all sorts of tools & just as well as there was multiple holes in it !!!!!!

& new found respect to Plumbers who do this kind o thing for a living :)


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