Shed

Small update as I really haven't progressed much! Have got a knackered 2nd hand shed / summerhouse and that's in bit ready to be fixed up as much as possible. My issue is the base and I've reached decision paralysis! I've chucked a load of hardcore down and was going to concrete over; then I thought about screed (or what I call screed which is sharp sand and cement ); then I thought about topping with a load of paving slabs I have with a mortar base.
And now I'm cycling through them and need someone who knows better than me to advise...

Help please?!

 

Did but it rotted so now the floor will be what I put down which is why I was looking at the above options.
Cost wise it's all much of a muchness that will leave me with either spare sharp sand or spare ballast

 

That's right. Also screwed to the base with some form of anchor; just looking at the slab material really.
Concrete is stronger but spare sharp sand is more useful than spare ballast!

 

You make the slab the same size as the shed and the roof slightly bigger so the water runs off into the surrounding mud.
I got tired of all the over thinking so just ordered the stronger ballast and hope it all works out!

 

Did I mention the shed was knackered already? It will be patched but it's not worth the added cost of concrete base plus a wooden base on top, the wooden base being twice the cost of the concrete incidentally. Water runoff will disappear into some shrubs and I might look at guttering to catch the water also. I'm really not concerned about a small amount of leakage as this is not a shed that will outlast me, just one that needs to survive 5 years or so. May also consider a strip of dampproof membrane