The sandwich panel needs to be updated and maintained in time, which can effectively avoid further aging of the sandwich panel, restore the correct use function, extend the service life and reduce energy consumption. The color steel roof shall be inspected and maintained every five years or so, which can effectively avoid the impact of roof leakage, groove blockage, roof aging, corrosion, etc. on the normal use of buildings, and reduce and avoid the interference of the above problems on normal production and operation.
Colored steel roof waterproofing is a systematic project. Especially for roof projects with complex structures, as long as there is leakage at the upper part, leakage everywhere after water inflow, and leakage at the lower part, the problem of water leakage cannot be fundamentally solved. Every heavy rain requires a lot of manpower and material resources to deal with it. In the past, waterproof coiled materials, silicon copper weather resistant adhesive, polyurethane coating, JS cement-based waterproof coating and other waterproof products were generally used for maintenance to solve the leakage problem. Due to the large roof span and the influence of external dynamic load and temperature difference between day and night, these materials can not be used for color steel waterproof tile roofs for a long time, which can not fundamentally solve the problem. After the hot summer and cold winter tests, leakage will occur. On the other hand, sandwich panel manufacturers' customers use SBS, PVC and other coils for large area plane laying, which is high in overall cost. It is difficult to deal with the protruding parts and hole locations with complex structures, which will cause leakage for a long time, and many of them cannot be repaired
