Resurrecting this as we have now had a concrete slab put down.
The issue I have now is, when I measure it, it appears to be around 40mm lower on one side to the other – which I think is quite a drop!
I have a tuin charlie log cabin on order (with composite foundation beams), arriving in a few weeks, so I’m after any ideas on the best way to get it level as I have heard you can have issues with the logs splitting / windows and doors not fitting etc if it’s all on a wonk.
Any help appreciated !