I am reading about cavity trays and panicking about :
I have built a flat roof side extension measuring 9.2m x 4m alongside the gable wall on one side of the house. There is no cavity tray. If I understand it correctly from what I am reading now, the water from the gable wall above the flat roof structure will run down the cavity and all the way down to the foundations, but on its way can come out the blockwork into the rooms? Should there be a huge cavity tray running the whole length of the side extension then to take water out of the gable brick wall and potentially onto the flat roof?
I have built a flat roof side extension measuring 9.2m x 4m alongside the gable wall on one side of the house. There is no cavity tray. If I understand it correctly from what I am reading now, the water from the gable wall above the flat roof structure will run down the cavity and all the way down to the foundations, but on its way can come out the blockwork into the rooms? Should there be a huge cavity tray running the whole length of the side extension then to take water out of the gable brick wall and potentially onto the flat roof?