Once builders' sand has been wet and then dries, it is generally safe to handle. However, there are a few considerations to keep in mind:
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Dust: When dry, sand can create dust, which may be respiratory irritants if inhaled. It’s a good idea to wear a mask if you are working with large amounts of sand or if it is particularly dusty.
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Contaminants: If the sand was initially contaminated with chemicals or harmful materials, wetting it and allowing it to dry may not remove those contaminants. In such cases, it’s essential to ensure that the sand is clean and safe for its intended use.
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Moisture Retention: Wet sand can clump together, affecting its usability for certain applications. Once dried, it might return to a more usable state for construction or landscaping.
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Proper Storage: If the sand isn’t stored properly after drying, it can become recontaminated or may not remain in a usable state.
As long as the sand has come from a safe source and you address any dust concerns, it can be safely used after drying.