The answer to 'why is my gutter guards water stains' is that water stains on gutter guards are often caused by mineral deposits, debris buildup, or improper installation. Over time, minerals in the water can leave behind unsightly stains on the surface of the gutter guards. Additionally, if the guards are not installed correctly or become clogged with leaves and other debris, water may not flow through them properly, leading to staining.
In many cases, the solution is to clean the gutter guards thoroughly using a mild detergent and a soft-bristled brush. This can help remove the stains and restore the original appearance of the guards. However, if the stains are persistent or the guards are damaged, it may be necessary to replace them entirely. If you're unsure of the best way to address the issue, it's always a good idea to consult with a professional roofing contractor.