(One manufacturer is Chimney RX Brushable Crown Repair; offered from the gallon at saversystems.com) Cover your complete crown and after that smooth it with a paintbrush (Image 2). Wait around till the sealer dries tacky for the contact, then apply a next coat with a brush. Clean up with water. https://dominickjllki.activosblog.com/27582357/modern-electric-fireplace-an-overview