Recessed Skill - Internal Flooring to Alfresco Tiling

[ltr]Hi All, We have opted for a recessed sill to our sliding doors which connects our Living room to Alfresco. Living room has timber flooring and will be flushed with the sliding door track however we also want our external area/alfresco (to be 10mm external tiles) be flushed with the recessed sill of sliding door. [/ltr]


[ltr]Alfresco will be put as part of slab - We have paid extra for this but the builder has not responded to the queries raised. Before i sign the contract any idea how much mm should be step down for the alfresco from the internal floor to ensure Alfresco post tiling is flushed with the internal timber floor?[/ltr]