Can i lay unusual sod over my existing grass or do i inevitability to roto till it?
another option could be to spot kernel where you obligation it if the existing grass is not completely dead, as for weed you can fertilize a few weeks after sprouting,
if you don't roto till the sod will only ultimate for a day or two, so it would not be a correct shortcut.
No offense, I LOVE "CAN I?" question. The answer is usually certainly, near an added,,, BUT you may not be satisfied.
In some index it depends on why you want to do this, the condition of the current GRASS, any notion as to soil composition, any leveling issues, weed issues, currently installed irrigation plumbing, height issues as they relate to adjacent to areas, etc.
Answers: yea you definitely hold to till it first. No way around it