Required topsoil for a lawn - experiences?

Hello everyone,

we have clay soil as the base. The neighbors barely have any grass growing.
What height in cm of topsoil is required for a good lawn???

Thank you very much for your help!

Best regards

We have replaced 15-20mm! But please install a drainage when it rains, otherwise your lawn will become a pool.

15-20 cm more likely... I can only emphasize the importance of drainage from experience!

Yes exactly cm :-)

And additionally, you should ensure that your gardener properly and deeply loosens the subsoil, which is usually compacted by the construction site! Otherwise, waterlogging occurs, and most garden plants do not like that.

Clay soils are fertile but difficult to work with. Heavy, hard when dry, sticky when wet, little water seeps through, but the soil retains water for a long time during dry periods. Now, a lawn is not wheat. We also have clay, but managed without soil replacement. The steps: leave it over winter, frost loosens the soil. Spring. Loosen by going over it once with a Rhenish hoe. Add sand and work it in. The gardener came and then leveled the ground with a rototiller. After that, the lawn was sown. Gently worked in. Not compacted. Wait. And behold, there was evening and there was morning, and it turned green. And the gardener saw and declared it very good.