The galvanized sheet itself has good moisture-proof and corrosion-proof performance. The zinc layer on its surface can effectively prevent water vapor from eroding the steel base through physical isolation and electrochemical protection mechanism of "sacrificial anode", and it will not get moldy and damp-back, but it needs to be properly stored and sealed to prevent "white rust".
Principle and characteristics of core moisture-proof Physical isolation: the dense zinc layer blocks the direct contact between water vapor and oxygen and prevents the spread of corrosion. Electrochemical protection: zinc as sacrificial anode is preferentially oxidized, which can protect the steel base from rusting even if the coating is partially damaged.
Material stability: metal substrate has no organic components, and never absorbs moisture, mildew or deformation, which is wood materials Limitation tip: Long-term water accumulation or high humidity and closed environment is easy to produce "white rust" (basic zinc carbonate), which does not damage the matrix but affects the appearance and needs ventilation and drying.
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