Rust is a natural process that can affect steel. Certain types of steel and steel structures also tend to be more susceptible to rust, such as outdoor steel structures that are exposed to the elements and moisture. If left unaddressed, rust can lead to a weakening of a steel structure and may even reduce its lifespan. As such, proper care should be taken to minimise the likelihood of rust forming on your steel structures. In this post, we take a closer look at some useful rust prevention techniques that you can use to protect your outdoor steel structures from rust.
Common Causes of Rust in Outdoor Steel Structures
To best limit the chances that rust is able to form on your outdoor steel structures, it can be useful to start by understanding the common causes of rust. These include:
- Exposure to Moisture: Moisture from rain, snow, or simply being exposed to a humid environment can play a big part in accelerating the rate at which rust develops on steel.
- Oxygen Exposure: Coupled with moisture, exposure to oxygen is also part of the natural process that leads to the formation of rust on steel.
- Scratches and Dents: Steel that has been painted or protected by a layer of exterior coating generally tends to be less susceptible to rust but this protective layer might be circumvented by scratches and dents on the steel’s surface that expose the bare metal beneath.
Useful Rust Prevention Techniques
Here are some of the most useful rust prevention techniques that you can consider using to prevent rust or limit the rate at which your outdoor steel structures develop rust:
Galvanisation
Galvanisation involves coating the steel with a layer of zinc on its exterior. This zinc layer acts as a protective coating that prevents the underlying steel from being exposed to the moisture and oxygen in the air. As a result, rust is unable to form since zinc is naturally also unaffected by the process of rusting.
Painting
Painting is also another way that a protective layer can be applied to the surface of a steel structure. However, unlike galvanisation, paint can sometimes chip or peel off and in such cases, a new layer of paint must be applied as soon as possible to minimise the exposure of the underlying steel to oxygen and moisture.
Regular Cleaning and Maintenance
Regular cleaning of any debris and dirt can also help to minimise moisture that might be trapped. This can reduce the likelihood of the steel rusting. At the same time, regular maintenance of the steel structure to get rid of any rust spots while they are still small is also essential to preserving the overall aesthetic of the steel structure.
Get Your Steel from RW Steel
If you’re looking for galvanised steel posts or other steel products for your outdoor building or construction project, RW Steel has you covered. We are the leading supplier of high-quality steel in Melbourne and the surrounding areas. Contact us today for a free quote!