It certainly sounds like a timesaving solution, but unfortunately, it is not as easy as that.
"Old ways won't open new doors."
If you are thinking of re-turfing your lawn, there must be a pretty good reason behind it. The recent floods or past drought, maybe it has worn out, has humps and hollows, is weedy or just plain awful.
Laying new turf on old grass is only a quick fix, stop gap, band aid solution. The results will most likely be short lived. As most of the reasons above have an underlying cause, trying to hide them could be futile and costly. It’s vital that you address any issues before laying your new turf to avoid disappointment down the line.
When looking to problem solve, Lachlan considers:
Turf is a living plant that needs quality soil to grow. New turf must be able to make soil contact to put its roots down, therefore, any existing grass must be extremely sparse for you to be able to lay it without doing any real groundwork.
For best results, new turf needs freshly prepared soil for the roots to grow strongly and deeply. Proper soil preparation will also remove any ground unevenness and give you a neat and level lawn.
Write something about yourself. No need to be fancy, just an overview.