Can the coating on deck screws cause issues when used with untreated lumber?

Yes, the coating on deck screws may interact poorly with untreated lumber.

The chemicals in the coating can react with the natural resins and acids present in the untreated wood, leading to corrosion, staining, or other forms of deterioration over time.

To avoid such issues, it's advisable to use screws specifically designed for use with untreated lumber, such as hot-dipped galvanized or stainless steel screws.

These screws are less likely to react with the wood and provide better durability and longevity in outdoor applications.

Applying a protective sealant or primer to the untreated lumber before screwing may help mitigate potential interactions between the wood and the screw coating.
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