What's the best way to arrange your slab edge?

1. Stop it before it reaches the walling?

2. Stop it just underneath, in line with the walling?

3. Take it out beyond the wall?

All the above given that the slab must stop 20mm below the sheets as per vendor's instructions. Apparently the wall sheets will rot or somesuch if they touch the slab.

That 20mm space can be filled with various stuffs they sell, I think. Else the wind would blow the rain in anyway, wouldn't it?

The best way would seem to be when the slab is stopped short of the wall, say 20mm or so. But then there'd be a sort of 'diagonal' gap that'd be hard to block, I imagine.

The best way of all, it seems to me, is to use the walling as formwork and pour the slab right up to the wall. But then the slab is touching the wall and - they say that's a no-no.

The plan is to pour a 'skirt' around the slab at a later date. A metre wide. And to have that skirt be 10mm or so below the level of the slab.

I just wondered if there's a predominant methodology with a good reason and good results.

regards,

ab


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