goodbyegti

Hello! I'm wondering how to implement the DPC in the attached diagram. The construction is a DPM, with a 150mm slab + 150mm insulation + 75mm screed. The wall is 100mm thermal block on the inner skin, with 100mm insulation, a 25mm SureCav spacer and then 125mm natural stone. Would you normally fit a cavity tray in this instance? And what about the DPC bridging the cavity with no downward slope to the outer skin?