Few materials can match the durability and thermal capacity of metal or iron, which makes them the material of choice when constructing fire pits. Their robustness enables them to endure prolonged exposure to wind and sunlight without harm. Nonetheless, they possess a vulnerability: water. If subjected to moisture for extended durations, all fire pits (even stainless steel) can accumulate rust. The good thing is that there are many easy things you can do to care for your fire pit and protect it from getting rusty.
What causes rust on firepits?
Rust forms on a fire pit when the metal materials, like iron or steel, react with oxygen and moisture in the air. This reaction, known as oxidation, leads to the development of a reddish-brown layer on the metal’s surface, which is what we call rust. The presence of water or even humidity, especially in environments with salt, can speed up this rusting process. Salt can further promote corrosion by increasing the conductivity of water, making the rusting process more aggressive. To prevent rust, it’s important to shield the fire pit from excessive moisture, especially in salty conditions, and consider applying protective coatings.
Is rust harmful?
Rust can be harmful, especially when it affects structures, objects, or materials that are meant to remain sturdy and functional. Here are a few ways rust can be harmful:
- Structural Integrity: Rust weakens the metal it forms on. When metal objects or structures rust, their structural integrity can be compromised. This can lead to safety hazards.
- Aesthetic Degradation: Rust on some objects can make them look old and worn. This is particularly undesirable for items that are not intended to be rusty – like a modern, painted firepit.
- Health Concerns: In some cases, rust can create sharp edges or points that pose a risk of cuts and injuries. Additionally, if ingested or inhaled, rust particles can be harmful to health.
Here are some Suggestions for Preventing Rust on Your Fire Pit
Tip #1 Keep Your Fire Pit Under Cover
Another simple approach to decrease the likelihood of rust is by minimizing your fire pit’s contact with moisture and outdoor conditions. If your fire pit is manageable in weight, consider storing it inside or in a sheltered spot like a garage or garden shed when not in use. This precaution will shield it from rain and other forms of moisture. If indoor storage isn’t possible, endeavor to place it beneath a covered area like a porch to avoid exposure to heavy rain.
Tip #2 Use a Protective Cover
If your fire pit is too heavy to move around comfortably, you can use a tough fabric cover to keep moisture out. These covers are made of strong water-resistant materials to keep your fire pit dry. Look for one with a drawstring to make sure it fits nicely.
Tip #3 Regularly Clean and Dry Your Fire Pit
Clean your fire pit regularly to remove debris, ashes, and moisture. Leaving ashes in your fire pit after burning can attract moisture from the air, potentially harming the interior and bowl of your fire pit. Ensure your fire pit is thoroughly dry after each use to prevent water accumulation that can lead to rust.
Tip #4 Apply Vegetable Oil
Even if stored correctly, a fire pit can still be exposed to moisture due to the humidity present in the air. Shield your fire pit from rust by applying a thin coat of vegetable oil (i.e. canola or vegetable). This natural method forms a protective barrier on the metal’s surface, preventing moisture and oxygen contact. Apply this treatment at least once per season to establish a safeguarding shield between your fire pit and the atmospheric moisture.
How to Repair a Rusted Fire Pit
Have you spotted some reddish-brown spots on your fire pit? No need to fret! It’s not a big deal. If you keep an eye on your fire pit and catch little bits of rust early, you can clean it off before it does any real harm to your fire pit.
Reviving a rusted fire pit is doable with some simple steps. Start by checking how bad the rust is. If it’s just on the surface, apply masking tape to cover the edges of the rusted section and gently scrub it away using a wire brush or sandpaper, and then clean the area (remember to wear a respirator while sanding to prevent inhaling debris). The masking tape acts as a shield for the unaffected portions of the fire pit during sanding. For more serious rust, a rust remover/converter can stop it from getting worse. Apply it on the rusty spots and let it turn the rust into something stable. After that, give the fire pit a good rinse and let it dry.
Next, use high-temperature paint in a color that matches your fire pit finish to stop more rusting. This not only makes it look new but also keeps rust away in the future.
Enjoy Your Fire Pit For Years
Rain and moisture aren’t exactly what your metal fire pit wants, but luckily, there are several easy methods to ensure your fire pit stays secure and free from rust. By storing it correctly, doing regular upkeep, and watching for rust spots, you’ll have no trouble having numerous cozy bonfires in your metal fire pit.