so I guess, during the pour, some amount of
water/sand/cement will get under the capping, but the cable will not
end up 'encased' as such.

Do you think that this is a problem? If it is, its not to late to take
it up and bring it along the wall, instead of the floor.



The screed will be laid semi-dry ... not a poured liquid, so leave it as you
have it.

Rick