Why do roofs in coastal areas need special attention to anti-corrosion?

Roofs in coastal areas need special attention to anti-corrosion because the humidity in these areas is high and the air contains a lot of salt, which will accelerate the corrosion of building materials. Salt spray and humid environment will cause metal components to rust, resulting in reduced structural strength and even causing problems such as roof leaks. Therefore, anti-corrosion measures are essential to extend the service life of the roof and ensure building safety.