20mm Shingle as hard core?

[Busybloke]

I'm going to build a small patio in an area I currently have covered in 20mm shingle. Is it ok to tamp the shingle down and have that as a base to lay cement on?

I have a small volume of scalpings left from previous project, but not enough to fill the area.

Would it be best to have a sand base or cement.....the patio is not going to get much traffic.

Looking to get at it this afternoon. Many thanks for all advice.

Cheers

 

[Thermo]

shingle wont tamp down theres nothing to bind it together and it will be unstable.

best option for paving is always a full mortar base.