Drain Repair

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14 Aug 2003
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Hi all,

I have a couple of outside drain where the concrete round them has failed\is missing that I need to fix.


My question is do I just use normal cement or is there something more waterproof that I should use?

Also, as you can see in the 2nd picture it's a bit of a mess with the gully not being fixed - I was just going to cement this back in, but if someone can recommend something that might do the job and look better I'd love to here it.

Thanks in advance,

Mark
 
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I would use a rapid set mortar or concrete repair for those situations. Get a tub from wickes or your favourite supplier. A small trowel comes in handy for those awkward to get at places

Either a pointing trowel or small tool (toolstation)

But first you need to get it all as clean as possible, ideally hack off the surface crap and loose fillets.

The gullies are all poorly laid out for drainage but will do for now. If it was me I would rip them out and build in something more suited to the arrangements. including the use of back inlet gullies with side plates or other means of taking the pipes directly below grating level.
 
You would be better off extending the pipes into the gully, and then you could do away with those ugly brick surrounds and then just make the concrete good.

Otherwise a normal 3:1 or 2:1 mix using screed sand (it has fine stone chippings in it) will do. Don't use building sand which is too soft for this.

You'll need to remove any existing concrete down to slightly below the top of the gully and not just go over the top of it. Be careful when chiseling it so as not to crack the gully.

And the main thing is to trowel the concrete smooth to give it it's wearing surface.

Cut a cardboard cover or put a bag in the gully to stop stuff falling in it
 
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No that is mortar for brickwork.

Don't bother with quick set anything. It is not needed.
 

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