GI roofing sheets are often considered cost-effective, but they come with certain drawbacks. These sheets have durability concerns due to potential corrosion over time. GI sheet is coated with zinc for protection against corrosion, but they can still deteriorate, particularly when the coating is damaged or when they are exposed to harsh environmental conditions. This results in a shorter lifespan for GI roofing sheets, typically ranging from 8 to 10 years. This required regular maintenance and recoating to mitigate corrosion issues. Eventually, the need for replacement becomes inevitable, incurring additional costs and contributing to long-term expenses.
Furthermore, GI sheets are heavier, they require more robust structure support during installation. These additional support requirements can elevate construction costs. When opting for GI sheets for roofing, these factors should be thoughtfully considered to manage long-term costs effectively.