Im covering my chipboard floor boards with 12mm ply, on top of this will be underfloor heating, adhesive, and 6mm floor tiles. which will take me to around the 20mm in step mark from tile to carpet, which is quite a difference. Can anyone suggest how to go about this transition in the neatest possible way without seeing a big difference. Just looking for someone with a bit of experience to give me a few pointers. Cheers