If I want to top dress my lawn with 5cm deep topsoil and it's 30x15m how much do I need? I worked it out at 22m3 which is about 30 tonnes worth (or 2 lorry loads) now that seems like a huge amount of soil. Where have I gone wrong with the maths?
I think your'e putting too much top dressing on. The grass wont come up if you add 2 inches of top soil too it. You'll need to reseed it if you put that much on. Better to do it gradually, as for the maths I'm rubbish, but someone will know.
I think I may have to give up on my lawn and start again then.
Last Autumn I fed it, scarified it, hollow tined it and even over seeded it. However this spring looking at it it is as compacted as ever is a bit lumpy and has no real growth on it at all. It is also pretty much dry despite the wettest winter for ages.
I was hoping that a level of topsoil and over-seed may be the option as I think my problem it that there is not much soil anymore just a clay surface which is why the grass is not growing.
Even with 15 tonnes of topsoil,sand and seed i think I may be better just taking up what I have and rotating hard and adding lots of organic matter and then either re-seeding or turfing.
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I think your'e putting too much top dressing on. The grass wont come up if you add 2 inches of top soil too it. You'll need to reseed it if you put that much on. Better to do it gradually, as for the maths I'm rubbish, but someone will know.
At that depth you would need 2.25 cubic metres of dressing. Though as said, that depth would kill the grass.
Thanks Chaps,
I think I may have to give up on my lawn and start again then.
Last Autumn I fed it, scarified it, hollow tined it and even over seeded it. However this spring looking at it it is as compacted as ever is a bit lumpy and has no real growth on it at all. It is also pretty much dry despite the wettest winter for ages.
I was hoping that a level of topsoil and over-seed may be the option as I think my problem it that there is not much soil anymore just a clay surface which is why the grass is not growing.
Even with 15 tonnes of topsoil,sand and seed i think I may be better just taking up what I have and rotating hard and adding lots of organic matter and then either re-seeding or turfing.