How to Paint COR-TEN Steel
- 1). Scrub the COR-TEN steel using a water-based degreaser and a coarse brush.
- 2). Rinse the COR-TEN steel surface thoroughly using a pressure washer. Allow the surface to dry completely.
- 3). Apply a noxyde, ultra-duty rust preventative elastomeric coating to the COR-TEN steel using a 4-inch latex paintbrush. Allow the surface to dry for four hours and then apply another coat if necessary.
Source...