Our custom made window sills come in two types: plain straight finish or a profiled option. Each product is available in various thickness from 30mm, 40mm, 50mm and 60mm with other thicknesses on request.
We recommend adding an overhang on the front edge of 50mm. This will allow enough overhang to accommodate a 6mm drip groove to the front long edge. This will prevent water from returning to your wall and staining over time. Joggles or horns can be cut into each slate end so that the slate wraps around each reveal.