CORROSION & WEATHER
Rust & Weather Damage
Rust, standing water and mildew all come from the same root cause: moisture that gets in and has nowhere to go. Fixing the symptom without fixing the drainage or the cover means doing the same work again next spring.
Start here
Read the symptom titles below and pick the one that matches what you are actually observing rather than what you suspect is wrong. Each page opens with a short answer you can act on immediately, then works through the causes in order of how often each one turns out to be responsible. Half of them resolve without buying anything, so work top to bottom before you reach for a replacement part.
Rust on the Grill Grates
Moderate
1 hour plus seasoning
Water Pooling Inside the Grill After Rain
Easy
30 minutes
Mold and Mildew Growing Under the Grill Cover
Easy
45 minutes
Prevention for this category
- Seasoning Grates and Cast Iron the Right WayNew grates, after any deep clean, and any time water beads stop forming
- Winterizing and Off-Season StorageOnce a year, before the first hard frost