Roger wrote:
Mike Lyle wrote:
Roger wrote:
[...]

If the sheet is impermeable, it does not need to be 'kept away'

from

the surface it touches.


My worry there would be not the moisture from the soil side
getting
in, but the inevitable moisture from other directions not being
able
to evaporate freely from the shed side. But you've seen it
working,
so it's OK.

Being corregated the amount that is touching is less than the
battens.

As I said, I'm sure you're right; but I was thinking of increasing
the width of the gap.

--
Mike.