What to do if your flat top grill's cooktop develops rust.
Is Rust Normal on My Cooktop?
Regular seasoning and proper grill storage will help prevent rust from developing on the cooktop; however, rust on flat top grill cooktops is completely normal and is easily removed. You don't need to replace a cooktop that develops rust -- you just need to clean it off and re-season!
How to Clean Rust off Your Cooktop
A good initial seasoning and post-cook seasonings are crucial for preventing rust; however, if your Flat Top Grill starts developing rust, follow these steps:
Use a nonabrasive scouring pad and water to remove rust. If rust cannot be removed with the nonabrasive scouring pad, you can use 220 grit sandpaper to remove rust from affected areas.
Using water and a cloth, wipe off all of the rust residue. The cooktop should be free of any loose debris created in Step 1. Wipe up all water from this process with a clean, dry towel or cloth. Before performing Step 3, make sure no water is present on the cook surface. Do not attempt to evaporate the excess water by heating the grill.