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Using zinc-coated screws with stainless steel flashing in a masonry cavity wall is not recommended due to the risk of galvanic corrosion. When dissimilar metals, such as zinc and stainless steel, come into contact in the presence of moisture, the less noble metal (zinc) can corrode more rapidly. To ensure longevity and prevent corrosion issues, it's best to use compatible materials, such as stainless steel screws with stainless steel flashing.

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1w ago

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