My concrete patio is 6" lower than the rear of my yard. I would like to:
1) Install one of the manufactured wood substitute product (eg.Trex). I want to raise the surface of my new deck to eliminate part of the level difference. How can I do this? I am thinking of fastening planks (artificial wood to the concrete and useing this as the base to fasten the new patio planking. Is this a feasible approach?


2) Overlay the exisitin concrete deck with new concrete, raising the level two inches. How can I get a mechanical bond between the old concrete and the new?