On 01/02/2015 05:24, Beachhutdays wrote:
I would really appreciate some advice. We have a long sloping garden in
North London that slopes down (about 4ft difference in height from top
to bottom of 100ft garden).
The area ends under a huge oak tree just past our back fence. The
ground is very squelchy, being clay soil, and we have an area of approx
20ft by 30ft that we would like some kind of 'floor covering' to make it
easier to walk over and put a trampoline on. It gets tonnes of oak
leaves and twiggy bits falling there too. We also have two dogs.
We can't pave as not allowed to affect tree roots.
Does anyone have any ideas please? Gravel?? Sub base??

I can't see why you couldn't lay paving slabs on a sub base as long as
you don't point in between them so that the water can soak through to
the tree roots.
It would give you a firmer base for the trampoline.