Our 1 Metre Wet-Cast Smooth Finish Sloped Windowsills are used to fit windows and allow rainwater to run off thanks to their slope. Their high-performance concrete construction and super plasticizing additives make this product an ideal option for those looking for durability and low water absorption. The SAS windowsills with a smooth wet-cast finish have a run-off for water evacuation and thus protect the wall where they are installed.