Can metal roof panels be installed over existing roofs?

If the existing roof waterproofing layer is intact and only slightly defective, it can be installed directly after cleaning. There is no need to remove the old roof, eliminating the cost of demolition and garbage removal. The construction period is more than 50% shorter than “demolition and reconstruction”. It is suitable for buildings that need to be quickly restored to use (such as factories and warehouses), with low cost and short construction period. At the same time, the metal roof panel also protects the original roof。At the same time, it can isolate rain, snow, and ultraviolet rays, extend the service life of the old roof base (such as concrete and wooden keels), and reduce the frequency of repair of the original roof. And General metal roof panels have low thermal conductivity, good thermal insulation performance, good fire protection performance, high safety factor, fire protection, wind resistance, and corrosion resistance (such as aluminum-magnesium-manganese plates, galvanized color steel plates), which can improve the overall disaster resistance of the roof. ability.