You are using an outdated browser. Please upgrade your browser to improve your experience.
The 95mm Stub cill can only be prepared with concealed drainage if the water can drain away towards the outside of the reveal. There must be a gap of at least 20mm between the drainage hole and the substrate in order to ensure the water can drain effectively. The substrate must be sloped to ensure the water doesn’t drain back into the building. It is the installers responsibility to ensure the drainage outlets are clear and free to drain water away from the substrate.