Posted: 08/03/2016 at 11:24
OP has said...
We've recently moved in to a new house. There is a great rectangular lawn which I believe used to be a Tennis court. It seems to be 60% moss 40% thin grass, so I went over it with a fork this afternoon (to try and improve drainage) and the topsoil seems to be incredibly thin (say 3"/75mm). I presume that's the old Tennis Court gravelly surfacing underneath.
I would have to agree with Pansy, spiking it is not going to be the answer, I think it will need digging up, fresh top soil and re seeded or turf. There are no short cuts.IMO.