Levelling a shed

[John Rudd]

I have a new metal shed to erect on a paved area at the rear of my garage.
Now the paved area has a slight slope to allow rain to drain off, so how do I level the shed on the base? What I think I need is a water proof material that will allow the shed to sit properly on the base but is pliable to accomodate the slight slope of the base....
So is there a recommebdation for such a product? I cant of anything right now, but there must be something out there?

[Joules]

John, not sure how much give you want with this shed, but I have used rubber stable matting as base material for things rangeing from hot tubs to outdoor buildings.  I wouldn't say it compresses much, but it does make a good hardwaring floor.  It can be cut with a jigsaw.... just...

[John Rudd]

Joules,
The shed itself is a self assembly affair.....the 'base' is made from galvy sheet steel pressings, there is no base per se...just a frame for the sides and roof....
At the moment, I dont know how much out of level the frame will be until I start to assemble on the paved area. This has a slight slope for surface water run off along the longest measurement ( 3.1m )

[Joules]

Yep, I know those sheds, I recall we threw away the screws and pop riveted the whole thing.  The shed can be assembled on some pretty awful surfaces and take up the shape it's built on.  The base frame is strong enough to be chocked up to get it level, you just then want a raised floor that isn't prone to flood the shed during heavy rain.   I used one when I had the workshop built to house machinery in.