It’s best to prime composite decking before painting. This promotes better paint adhesion, helps create a smooth finish, and can mean the paint job will last longer. Always follow the manufacturer’s instructions for application, allow ample primer drying time before painting (typically 24 to 48 hours), and thoroughly clean the deck boards to promote the best adhesion.

Always wait until the morning dew has dried before you stain your deck. The stain needs a fully dry surface to sink into.

Whitewashing isn’t permanent, but it can last for a long, long time. When you apply it correctly or have a seasoned pro whitewash your brick, whitewashing can last for 20 to 30 years or longer. Whitewash is very durable and typically requires little maintenance, making it a great project for most DIYers.

Applying a sealer or topcoat after staining wood is highly recommended, though not always strictly required. A sealer protects the wood from moisture, UV rays, and weather-related issues, which is especially important for outdoor surfaces like decks and fences. It also enhances the stain's durability, prevents fading over time, and gives the wood a cleaner, more professional-looking finish. For some indoor applications, a sealer may not be necessary, depending on the type of stain used and the level of protection needed. It's always best to check the stain manufacturer's recommendations and consider the wood's intended use and exposure when deciding whether to apply a sealer.