I siliconed mine straight to the cabinets - works fine.

(Stephen Ward) wrote in message . com...
We will be having a new Kitchen fitted shortly and it looks like we
will opt, yet again for granite works, which have worked well for us
in the past. Previously we used a stonemason who sheeted out the
worktops with MDF prior to fixing the granite with silicone. Whilst I
understand this is what I would consider to be a "belt and braces job"
is this necessary when the kitchen units do in fact have tops on the
base units.

Steve