In article ,
AL_n wrote:
stuart noble wrote in news:IhBSu.11032$Eo5.6870
:

B&Q sell sharp sand labelled as "soil improver". Same stuff in a
different bag is a building product. To be fair though, same price!
It's incorporating the sand into the clay that's the problem.

My favourite improver is vermiculite, but I imagine fly ash might have
similar properties and be relatively cheap in bulk?

Thanks... Yes, I've often heard people say that using sand is a way to deal
with clay, but, as you say, mixing it in might be a problem.

The other issue is that you need a LOT. 100 Kg/m^2 is about the
minimum that will have any effect, and that would not have much.
Also, adding a lot of sand will raise the soil level.


Regards,
Nick Maclaren.