Why timing roofing needs maintenance?

Why timing roofing needs maintenance?
WHY why maintenance roofing needs timing?
Foshan Steel Experience tells us: roofing needs 5-8 years to conduct a systematic overall view, maintenance or refurbishment intervals, this can effectively prevent damage due to the aging of roofing materials, roof leaks, blocked drainage holes and other questions about the normal use of the building impact.
Timing spend minimal cost, to solve the existing leakage / corrosion and other questions, to avoid potential losses and risks;
According to the workshop's needs, timely adjustment of ventilation equipment and other components to ensure the best operation of the production;
Building a green roof, green energy, a derivative of a low-carbon environment.