Repair DPC where services pass through

[Ouch77]

Hi all,
Can anyone recommend a product that I can use to repair/seal the DPM under a concrete slab where the drains and some electrical duct pass through it?

I know there's a weakness in a particular location as we had some localised flooding outisde due to heavy rain which then appeared inside. I'm looking for a 'one pot' type of product that's low enough viscosity that I can pour over the affected area and let it find it's way down/around the pipework and fill any voids rather than just sitting on top of the concrete in a big gooey lump.

I've heard expoxy mentioned a lot, but there's a million different products. Some suggestions would be most welcome.

Thanks..

 

[blup]

It's inevitably compromised because the services pass through, maybe some liquid rubberised bitumen brushed on?

Blup

 

[tell80]

OP,
Where did the water appear - only around the drains or from under the slab in general across the floor?
Why not post a pic?

 

[Ouch77]

OP,
Where did the water appear - only around the drains or from under the slab in general across the floor?
Why not post a pic?

There was a blocked rainwater gulley on other side of the wall, which I think added to the pressure under the slab. since the gulley has been cleared the area hasn't flooded and the inside is dry as a bone.

The water was pooling slightly deeper in a low spot towards the centre of the room. the fact that this relative 'high spot' was wet suggests it might have been the source.

Whilst I could say 'happy days' and just rock on, I'd rather take steps to avoid any water getting in should there be flooding outside again.

 

[tell80]

You have a rock and a hard place situation - the liquid bitumen (as above) or similar might work but water pressure from below will sometimes blow away expedient solutions.