Pressure-treated, cedar, composite or PVC: choosing deck materials for Missouri weather

Pressure-treated pine

The least expensive to buy and the default for framing regardless of what goes on top. As a deck surface it is perfectly serviceable if maintained: clean and seal with a penetrating stain every two to three years. Neglected, it checks, cups and splinters within five to seven years. Expect fifteen to twenty years from a maintained surface. Choose it if budget comes first and you do not mind the upkeep.

Cedar

Attractive, naturally rot-resistant and stable. It costs meaningfully more than treated pine and still requires regular finishing to keep its color. It is softer and dents more easily. Much of the cedar available today is fast-grown with more sapwood than in the past, and it does not last the way old-growth did. We use it more for pergolas, posts and accents than for deck surfaces.

Capped composite

A core of wood fiber and plastic with a polymer shell on three or four sides. It does not splinter, does not need staining and carries long fade and stain warranties. It costs roughly twice what treated pine does for the surface boards, and it needs joists at sixteen inches or closer. Dark colors become hot in direct sun. For most homeowners who plan to stay ten years or more, it is the best overall value, and it is what we install most often.

Cellular PVC

All plastic, with no wood content. It is the lightest, the most moisture-proof and generally runs cooler than composite. It expands and contracts more with temperature, so installation details matter. It is the premium choice and particularly good near pools, at ground level where airflow is poor and on shaded, damp lots.

Do not forget railing and framing

Railing can cost as much as decking. Aluminum is durable, slim and close to maintenance-free. Whatever the surface, the frame beneath should be ground-contact-rated treated lumber with joist tape on top, structural connectors and footings below frost depth. A thirty-year surface deserves a thirty-year frame.

Our short recommendation

Tight budget and willing to maintain it: treated pine with a good stain. Staying long term and want weekends free: capped composite in a lighter color with aluminum rail. Damp, shaded or poolside: PVC.