Drainpipes spill water onto patio

[SRJDIY]

I have a drain where the cover is level with the patio surface; I've attached a picture.

The problem is that when a lot of water comes down the pipes it tends to spill somewhat onto the patio. This is causing algae and I imagine it's not great for the mortar on the wall either.

Does anyone have any ideas on how I can fix this please? If it helps, the left pipe is the one from the kitchen and the right the one from the bathroom.

 

[Wayners]

Remove grid cover now so water goes down.
New drain below ground is required with a concrete gully surround

It's good you noticed it. Most ignore problems like that until damage is done

 

[jj4091]

To me it looks like you need to remove the grid and clean out the gully, fit a 135degree bend to the kitchen waste and take it below the level of the grid which you will need to cut to suit.

 

[SRJDIY]

Remove grid cover now so water goes down.
New drain below ground is required with a concrete gully surround

It's good you noticed it. Most ignore problems like that until damage is done

Thanks for the advice!

If I remove the grid, doesn't that mean the drain will get clogged with dead leaves, hair from the shower, etc? Or is the idea to just remove it for a very brief period while the new drain is being installed?

How much is installing a new drain like that likely to cost?

 

[SRJDIY]

To me it looks like you need to remove the grid and clean out the gully, fit a 135degree bend to the kitchen waste and take it below the level of the grid which you will need to cut to suit.

Ok, so just redirect the kitchen pipe down so it ends below floor level, is that right?

 

[Wayners]

Modern drains have an insert that catches grit and stuff which you pill out and clean everything 6 months or so.
Removing grid for a while won't hurt.