Help w countertop overhang support options
head is spinning with everything (sometimes conflicting) I am reading/being told about supporting countertop overhangs. Hoping some replies will help clarify what we need to do.
We are installing a kitchen island with soapstone top and planning a 15" overhang at one end. The base cabinets supporting the top will be 66" wide x35" deep with another base cabinet that is 36" wide and projects another 13" deep. Imagine basically a stubby T shape. The countertop will be a single piece of soapstone measuring ~ 68"x69" and will have a cutout for a 36" cooktop at the end opposite the overhang.
So what do we need? Nothing (what one installer said) plywood? Metal bars? We'd prefer to avoid corbels because of waiting to maintain all cabinet functionality.
Thanks for your help!!