Final answer:
Rusting on steel gutters should not be considered merely a cosmetic issue; it is a sign of chemical reaction that compromises the structural integrity of the gutters and can lead to further damage, hence it should be reported.
Step-by-step explanation:
The statement “Rusting steel gutters are a cosmetic issue and need not be reported” is false. Rusting is a chemical reaction where iron in the gutters reacts with oxygen and water to form iron oxide, which is commonly known as rust. This process not only affects the appearance of the gutters but also their structural integrity. Over time, rust can degrade the metal, causing holes and weakening the gutter system, which can lead to potential water damage to the structure it is supposed to protect. Therefore, rusting is not solely a cosmetic issue but a potential sign of material failure that should be reported and addressed to prevent further damage.