Water drain pipe area

[dan2002]

Hi, was wondering if anyone could help out? I have previously used mortar several times to seal and close the gaps/hole around my drain but it always wears off and crumbles off over time.

Anyone have any tips on how to make it last longer?

 

[stevie888]

Cut away more material so you are putting a decent sized lump back. Soak and then prime the existing with cement slurry (unless you want to go and buy some SBR). Use sharp sand and a nice strong mix say 4:1 and keep the repair damp for a few days.

 

[foxhole]

Cut away loose material and gun in some resin . Pipes are all short, to avoid splashing fix that first .

 

[Alastairreid]

Extend the pipes to go into the drain.

 

[dan2002]

Cut away more material so you are putting a decent sized lump back. Soak and then prime the existing with cement slurry (unless you want to go and buy some SBR). Use sharp sand and a nice strong mix say 4:1 and keep the repair damp for a few so

So pour in some sharp sand and then use the mortar on top?

 

[foxhole]

So pour in some sharp sand and then use the mortar on top?

Where did you get that idea?

 

[ree]

OP,
You would do better with, say, a Sky Plastics Rectangular hopper head with a spigot outlet - code SPPT340 or similar.
Remove the present gulley head, & install the Rectangular head level with the surrounding surface.
Use a grinder to neatly cut the hard surfaace.
Extend your pipework to just above the grid or just below it - however you prefer.
Making good can be done with a semi-dry 3:1 sand & cement mix.

 

[Hugh Jaleak]

Ideally, extend the pipes so they discharge below the Grid but above the Water Line. If need be, use a Rainwater pipe Junction and direct one of the waste pipes into that to avoid too much congestion below.