Wow, thanks everyone for your input.
My sensible side says this is not rocket science, but my learning side says
there's a point there somewhere.
I guess I am just trying to get it right without too much agro for the contractor.
Also keeping in the budget.
I reckon the best course is to get the
tiler on site and work it out between us.
I am on a learning curve, these two houses are my first big build, its fascinating, I love it, but you are all right, why over-complicate things.
Thank you all for putting my brain into gear.
I will let you know how it all pans out.
Once again
Many thanks
Irene