To maintain the material´s excellent aesthetics, proper design and management of run-off water is required to avoid staining (i.e. using gutters, drainpipes, etc.) • All joints and profiles must be designed so that rainwater can run off – there must be no retention of water. And all contact with other materials (fixings, electrical conduits, lightings, etc.) must be avoided. • There are not warranties for weathering steel surfaces. • Storage in transit, at yards, or onsite should be minimised. When storage is unavoidable, uneven weathering can be minimised by positioning the material in an exposed area with good drainage. • In industrial and marine environments the patina does not adhere as well to the steel substrate and may not protect the steel from corrosion.
