The current corrosion-resistant roof utilizes an indoor drainage system with a collecting trough, however, the design between the roof and the collecting trough lacks clear leakage prevention measures. Due to the span limitations of the bottom steel beams, the collecting trough must be installed on the cross-sections between the beams, and there are no specific leakage prevention measures between the collecting trough and the steel beams.

In the design, the upper part of the sloping roof is directly connected to the main structure. Surface waterproofing is achieved solely with silicone weatherproof sealant. The bonding effect between the weatherproof adhesive and the structural surface will directly lead to leakage on the glass surface.

At the junction of the inclined steel beams and walls on both sides of the sloping roof, the leakage between the inclined steel beams and the lower wall was treated with weather-resistant sealant. The bonding effect of the sealant with the plastered surface of the wall was limited, resulting in severe leakage at this location during rainy season inspections.

To prevent the sliding of the tilted top glass, the design requires the addition of an aluminum alloy cover plate at the vertical joints of the two tiles, and the waterproof screws to be connected with the lower aluminum profile, thus stabilizing the issue. However, the possibility of leakage has increased. The contact surface between the glass corrosion-resistant tile and the steel beam should be thoroughly dusted to ensure the quality of the adhesive. This critical step is often overlooked during construction, leading to poor gel sealing and leakage.