What are the best ways to prevent thermal shock damage in cast iron outdoor armchairs?

Cast iron outdoor armchairs are durable and stylish, but they can suffer from thermal shock damage due to sudden temperature changes. Here are the best ways to prevent this issue:

1. Gradual Temperature Exposure: Avoid placing hot or cold items directly on the chair. Let it adjust naturally to weather changes.

2. Use Protective Covers: Cover the armchairs during extreme weather to shield them from rapid temperature shifts.

3. Apply Protective Coatings: Regularly use weather-resistant sealants or paints to create a barrier against thermal stress.

4. Avoid Direct Sunlight: Position the chairs in shaded areas to minimize exposure to intense heat and UV rays.

5. Regular Maintenance: Clean and inspect the chairs frequently to address any cracks or rust early.

By following these tips, you can extend the lifespan of your cast iron outdoor armchairs and keep them looking great.