Brian Sharrock wrote:
"nigel lewis" wrote in message
.. .
Following the recent heavy rains I have notice a build-up of water in the
ground floor void.

The void is quite deep however much of the land around the house is
sloping
towards it.

I was wondering, as i am having quite a bit of work done to the house, if
I
could fill the void and finish with a concrete screed floor to the ground
floor areas.

Any one got any comments.

It seems to be the wrong way round!
The void (area under the floor-boards and joists?) should be dry.
Air bricks should be permitting ventilation to evaporate any moisture.
If water is collecting then there's something wrong. Has a non-permeable
patio/parking area been implemented adjacent to the house? Has a large
'flower-bed' style of garden been constructed into which water is
soaking -acting as sponge- and become the source of the water. It's drainage
that you need (IMHO) rather than a lump of concrete that'll only move -not
obviate- the water.

mmm. Used to happen to me.

Try a french drain round the house.