Deciding whether to stain or paint a pool deck depends on your budget, desired look, and the deck's material. Both options can work. Paint offers a wider variety of color options, provides excellent water resistance, and can last longer. However, it requires a primer and can eventually fade or peel. Stain is often cheaper, easier to apply, and penetrates the wood for a more natural look and longer-lasting finish. It also has great water resistance. The downsides are fewer color options and the need for a sealant. The choice can also depend on the deck material; for example, staining may be a better option for concrete as it bonds well and lasts longer than paint.

You don't need to seal your deck after painting it because most exterior paints are waterproof and weather-resistant. While stealing is not necessary, it can add an additional layer of protection.

Staining pressure-treated wood is a recommended practice. While inherently resilient, it's not impervious to moisture and UV exposure. Staining treated wood is feasible and recommended for enhanced protection and longevity. Applying stain and sealant safeguards against degradation, prolonging its life span. These measures shield the wood from environmental threats while augmenting its aesthetic appeal, ensuring your investment endures the test of time.

Stain is meant to be absorbed by the porous wood, allowing some of the natural grain to show through. With that in mind, you don’t want to add more stain than the wood can absorb, as you risk covering up its natural markings. Generally, two coats is the maximum you should do, although very dense hardwoods may only be able to take a single coat.