Posted: 02/07/2013 at 04:16
I am trying to remove a lawn just now, but organically, and it is hard going. Are you doing it organically? If you are not in a rush then you could just cover the whole lawn with a double layer of black weed supressing membrane and wait a year. I think that would work, but I am just trying it myself now, so I won't know until next year. I dug up a large part of my lawn, but that is hard going.
If you are paving over it, would it make sense to have some rotavate and then flatten the ground, lay double black weed supressing membrane and the lay the paving over it? Where I've laid my membrane the grass is definitely not growing any more, and would only start growing again if I let the sunlight in. If you're going to pave over then it probably doesn't matter whether the grass is actually dead before you pave, as long as the light is excluded. Double membrane under the paving should do this. (Shouldn't it? Grass is very surprising stuff.)
If you're not organic then glyphosate would do it, but I'm not so keen on glyphosating very large areas.