fist question about a newb shed build . .the base . . .

[tony27]

Hi huys, I am going to build my very own shed, from scratch and have an idea about the base but would like some thoughts on how exactly to go about it . .

I was thinking of putting down sand then placing 400 x 400 x 28mm slabs down with a gap of approximately 100mm between a total of 24 slabs to give an area of 4000 x 1400mm for my shed floor to go on. I would then use pressure treated timber to create a floor to stand on the slabs then ply or chipboard for the floor. How does this sound to you guys?

If ok, how thick does the sand need to be? I am on top of an old flower bed so a layer of soil before clay so should i do anything to the ground first??

Also, do I need to think about membranes?

Thanks for now.

Tony.

 

[Jase750]

A concrete base would be a lot easier,probably cheaper as well. 100mm concrete on 100mm compacted mot type1. You could put a sheet of a193 welded mesh in your concrete for strength then build your shed straight on top. Use membrane if you want, 1200g would do it.

 

[Mursal]

As above. slab of concrete, sheet of plastic underneath the concrete to stop/reduce the damp and away you go.

Congratulations on the shed by the way ................