Can Metal Survive the Elements: Leaving Outdoor Metal Furniture

Ever wondered if you can leave your metal furniture or decorations outside without worry? As an exterior design enthusiast, I often receive this question, so I've decided to delve into the world of metal outdoors to help you understand.

Contrary to popular belief, not all metals are the same. Some are designed to brave the elements, while others should be brought indoors during harsh weather. It's crucial to understand the type of metal and its protective finishes before making a decision.

Weathering and Rusting Process

Exposure to harsh weather conditions can lead to two primary problems with metal—weathering and rusting. Weathering includes tarnishing and the loss of gloss, while rusting is the result of iron or steel reacting with oxygen and moisture.

While some metals like stainless steel and aluminum do not rust, others like wrought iron and cast iron can be highly susceptible. The good news is, even these metals can be left outside safely with proper maintenance and protection.

Understanding Metal Types

Stainless Steel: A popular choice for outdoor use due to its non-reactive properties. It resists rust, tarnish, and corrosion. However, lower grades can still be affected by harsh environments, so it's best to check the type used.

Aluminum: Another excellent choice for outdoor use. It does not rust and is resistant to corrosion, but it can pit if exposed to moisture. Consider powder coating or anodizing for added protection.

Protective Finishes and Maintenance

Powder Coating: This provides an excellent layer of protection, making it a great choice for exterior use. It offers durability and resistance to harsh weather conditions.

Patina: Some metals, like copper and brass, form a patina when exposed to air, which protects the underlying metal. While this natural process can be accelerated, it's generally safe to leave these metals outside.

When to Consider Indoors Storage

Furniture with washed or japanned finishes: These decorative processes produce a thin, porous layer that can be damaged by rain and snow. It's best to store these pieces indoors.

High-value metals like solid gold or silver: These are not usually used in furniture, but in case they are, it's best to store them indoors to prevent tarnishing or other damage.

Factors Affecting Metal Durability

Location: Harsh, humid environments can accelerate rusting and weathering. If you live in such an area, consider protective finishes and regular maintenance.

Weather: Extreme temperatures and heavy rain or snow can cause damage. If possible, consider covering or bringing metal pieces indoors during harsh weather.

The key is to understand the metal's properties and provide the necessary protection. Many metals can indeed be left outside, but it's essential to choose the right ones and maintain them properly. So, go ahead, enjoy your metal outdoor decor, and maintain that rustic charm!