Roof waterproofing and anti-corrosion are equally important because both are directly related to the structural safety and service life of the building. Waterproofing can prevent rainwater and other liquids from penetrating into the building, avoiding mildew, rot and structural damage caused by moisture; while anti-corrosion can prevent roofing materials from corroding due to long-term exposure to environmental factors such as air, moisture, and chemicals, maintaining their strength and integrity. Therefore, the effective combination of roof waterproofing and anti-corrosion can improve the durability and safety of the building.