I am planning a single pitch roof fitted between two existing cavity
walls (house/old garage) and am contemplating fixing to the walls rather
than using vertical supports from foundation pads.
The outer skin brick is sound but uses wirecut extruded brick with lots
of internal holes. Any drilled fixing hole has a 50% chance of finding a
cavity!

Any suggestions. Concrete screws with the holes pre-filled with resin?
or?
--
Tim Lamb