The key to preventing rust on high-permeability mesh in humid areas lies in the combined effect of material selection, environmental control, and regular maintenance. This is especially important in southern rainy seasons and coastal areas with high salt spray.
1. Prioritize Corrosion-Resistant Materials
Use high-permeability mesh made of 304 or 316 stainless steel wire. 316 stainless steel contains molybdenum, making it more resistant to chloride ion corrosion and more suitable for coastal environments.
Avoid using untreated iron or recycled metal mesh. These products will rust and break within 1-2 years in high-humidity environments.
2. Optimize Installation and Usage Environment
Avoid direct contact with the ground or walls where water accumulates during installation. Use anti-corrosion gaskets for isolation.
Maintain good ventilation around the screen to reduce moisture accumulation. If necessary, use a dehumidifier or exhaust fan to lower local humidity.
Check the seal before the rainy season to prevent rainwater from seeping into the tracks and frame gaps, causing internal metal parts to rust.
3. Regular Cleaning and Protective Maintenance
Wipe the mesh surface quarterly with a neutral detergent and a soft cloth to remove salt spray residue, oil stains, or acid rain deposits, preventing long-term adhesion of corrosive substances.
After cleaning, spray rust inhibitor (such as WD-40) on weld points, screws, and other connecting areas to form a protective film that isolates moisture.
In coastal areas, it is recommended to rinse the mesh with fresh water every six months and dry it thoroughly to prevent salt crystallization from accelerating corrosion.
