How long should I wait to seal my deck after installation?
In hot dry summer months, typically 2-3 weeks; in cooler months typically 4-6 weeks. For a wood sealant/finish to be effective the wood surface must be thoroughly dry. Here is a simple test. Splash water on the deck surface and observe its dispersion. If water droplets form on contact, the lumber is not yet dry enough to accept a finish. If water is absorbed into the wood it is time to apply/re-apply a wood sealant or finish.