Lawn problem at edge of drive - Grass will not grow!

[tlg]

Last year I had a single tarmac drive replaced with a double block paved drive.

The side of the drive where the drive foundations and haunching are runs alongside my front lawn and it was covered over with top soil and grass seed.

The side part of the lawn always looks poor which I presume is because there is not enough soil under the grass (see pic attached).

Any suggestions on what can I do to fix this problem, ideally without spending a lot of money replacing the edge of the drive?

[lutonlagerlout]

have you been washing your car ?

grass is very very resillient and i have seen it spread over concrete when there is no soil under it
i would leave it till summer
LLL

[Carberry]

I've thrown excess turf down at my yard whilst waiting to get rid of it and it has taken root in very well compacted hardcore (I get tankers and lorries in all the time). Don't need a lot of soil for grass to grow.

[tlg]

Thanks for your replies. No I haven't washed the car on the drive for a long time.

It was a visible stripe all last year but really noticeable after winter. Maybe I need to wait a bit and make sure it receives plenty of watering, Miracle Gro Lawn Feed has also been suggested to help it grow.

[Carberry]

How soon was the top soil put down after the concrete haunching? I'm no turf expert but could have made soil too alkali or possibly too much salt in the soil from efflorescence

[tlg]

It was about 3 weeks after the drive was put down.