Does anyone have a drawing or photo of the join between a brick and block wall with a full fill cavity (100mm wool), connecting to a flat warm roof? I am trying to design the roof for my extension and all I can seem to find are details for cold roof designs and details for parapet roofs. I've attached a drawing of what I have so far, I just can't seem to uncover the right info about how to bring the insulation up to the top of the joists and how to secure it in place.