DPM and DPC Garage conversion

[Mick78]

Hi all, 

I am doing a detached garage conversion and have a question on dpc and dpm.

 

Walls are single leaf cavity block and existing dpc is 45 mm up from concrete slab.

I plan to DPM the slab and run it 150mm up the walls, then 75mm insulation, then floating 22m chipboard t&g.

 

As the level of the new floor will be over the level of the dpc in the wall, is that a problem I.e. the dpc will be buried half way up the floor insulation.

 

Thanks