Concrete base

[paulontour]

Hi
We have a very old concrete patio. We are extending the garden and the patio area, which is about 45cm below the garden seperated by brick wall, is going to be turfed.
Question is do I have to break up the concrete and completely remove before I fill with topsoil and turf?
Thanks

 

[conny]

45cm is about 16" deep so I would say you should be alright though you will need to put some sort of drainage system over the concrete first.
I'm sure someone will come along and advise you on the best method for this. (or contradict me and say no you have to remove the concrete totally, LOL)