Further to discussion of Roofing material. Please find attached documents for decision. The documents describe that the installation and material have changed because of long-term usability and water leaking problem. This building’s slope is in line for standard (5 degree) which means still using original spec.
However, Using Clip-Lock (Klip-Lock) is fine but will have an effect on heat coming inside the building more. We can reduce the heat from the roof by using Fiberglass insulation (Thickness at least 5 mm.)
Please be informed accordingly and consider continually.