How to stop Corten rust staining paving | Raaft Blog
If a Corten planter is being installed next to paving, the most common solution is to leave a five-to-ten milimetre cement gap between the planter and the paving. If the installation is on a pedestal terrace system, a spacer will have the same result. This allows any water run-off to fall below the finished floor level (FFL) and bypass the paving.