Hi all, we are building a dormer which is to be rendered and I am detailing the junction of the dormer cheek where it comes through the roof. I have specified that the cheeks will be rendered on thermalite shield now Iam having 2nd thoughts. Does render go over flashing? If not stepped flashings on blocks is going to mean large steps. Should I specify bricks? Can anyone suggest a tidy detail. I would like a smoothish render i.e. not pebble dashed or tyrollean which I intend to paint with one of these low maintainance finishes.