HOW TO MAINTAIN LIGHTWEIGHT STEEL STRUCTURE FOR LONGEVITY
10 October 2025

Lightweight steel structures are now a primary choice in the construction world, especially for house roof trusses, canopies, and even commercial buildings. Besides being lightweight, this material is also known for being strong, durable, and relatively quick to install. However, to ensure its maximum lifespan for years to come, lightweight steel structures also require proper maintenance.
Here are several ways to maintain lightweight steel so that it remains durable and long-lasting.
- Choose Quality Lightweight Steel Material The first step in maintenance is selecting the right material. Lightweight steel with a protective layer like zincalume (aluminium-zinc) will be more resistant to corrosion. Make sure you purchase products from a reliable manufacturer that meets quality standards.
- Pay Attention to the Cutting Process Mistakes during cutting can cause the steel to rust easily. Avoid cutting lightweight steel with a grinding wheel as the sparks and heat can damage the protective coating. Use special lightweight steel shears for a clean cut that doesn't damage the surface.
- Clean Metal Dust After Installation After installation, there will be metal filings or dust left over from the screw drilling process. If not cleaned, this dust can adhere and trigger localized corrosion. Use a soft brush or a dry cloth to clean it.
- Check Joints and Screws Periodically Regular inspection is crucial, especially in joint areas. Loose screws can cause shaking and friction between components, which ultimately accelerates damage. Ensure all joints remain tight and no parts are loose.
- Protect from Continuous Direct Water Exposure Although lightweight steel has an anti-rust coating, continuous exposure to water can speed up wear. Prevent leaks in the roof or walls that could keep the steel constantly wet. Ensure the drainage system and gutters are working correctly.
- Repaint If Necessary For exposed parts of the lightweight steel, you can repaint them with a special anti-rust metal paint. This not only prolongs its lifespan but also enhances the aesthetic appearance of the building.
- Avoid Excessive Loads Lightweight steel structures are designed to withstand specific loads. Avoid placing excessive loads such as large water tanks or heavy equipment directly onto the structure without technical calculations. Overloading can cause bending or permanent damage.
Maintaining lightweight steel is not difficult, as long as it is done regularly and correctly. By choosing quality material and performing maintenance such as cleaning metal residue, checking joints, and protecting it from direct water exposure, a lightweight steel structure can last for decades without functional deterioration.
However, all maintenance will be maximized if you use high-quality lightweight steel from Garuda Truss from the start.
Don't take risks with materials of uncertain quality. Choose Garuda Truss for a strong and durable roof truss and lightweight steel construction solution.