how much topsoil?

[deluxegirl]

i have just taken up the paving in the back garden i want to put turf down. is 4/5 inch of topsoil ok for turf to grow?

[Canary42]

There are two answers to this ambiguous question.

Four fifths of an inch would probably lead to the turf struggling to get a hold.

On the other hand four to five inches would be suitable IMO, although it could depend on the state of the subsoil.

[deluxegirl]

dont have subsoil it all rubble goes down about two meters

[deluxegirl]

i mean 4 to 5 inchs of soil sorry

[nonomaybe]

If it is pure rubble, and you put your 4/5" of soil on top you will have to repeat the process in fairly short order. You need to lay a fibrous membrane which will stop the soil leaching down through the rubble..You will find it in most Builders Merchants and decent Gardeners stores.