Cedar and redwood are the best woods for outdoor playsets because their natural oils resist rot and insects without chemical treatment. Pressure-treated southern pine is the budget alternative and needs the most upkeep, while black locust and Douglas fir are worth considering for high-traffic commercial sites.
Species choice sets the ceiling on how long a wood structure lasts, but the sealing schedule determines whether it gets there. Here's how the common options compare, what treatment and finishing they need, and when to specify something other than wood.
Comparing the three common playground woods
Most wood playground equipment uses one of three species, and the trade-off is durability against cost.
Cedar resists rot and insects naturally and is the most common choice. It's lightweight, which makes handling and installation easier, and its natural oils do the work that chemical treatment does on pine.
Redwood performs similarly and costs more. It resists weather and pests well and holds its appearance longer, which is why it turns up on projects where the look matters as much as the lifespan.
Pressure-treated southern pine is the least expensive option. Treatment gives it decay and insect resistance that the wood doesn't have on its own, and it needs the most frequent resealing of the three.
Cedar is usually the practical middle. It costs less than redwood, outlasts untreated softwood substantially, and doesn't depend on a chemical treatment holding up over time.
Other species worth considering
Three less common options perform well in specific situations.
Black locust is exceptionally rot-resistant and often used in natural playground construction. It's dense, durable, and typically used in its natural form rather than milled into dimensional lumber, which suits natural playground equipment where irregular shapes are part of the design.
Douglas fir is strong and dimensionally stable, which makes it a reasonable structural choice. It's less naturally rot-resistant than cedar, so it depends more heavily on treatment and sealing.
Teak appears on lists of weather-resistant woods, and it genuinely is one, but cost puts it out of reach for playground use. It's a furniture and marine material, not a practical option for a play structure.
What to look for in any species
Four resistance properties determine how wood holds up outdoors, and they're worth asking about specifically.
Rot resistance is the main one, since moisture in the grain is what destroys wood structures. Insect resistance matters in most of the country, particularly against termites and carpenter bees. Ultraviolet resistance affects surface appearance and grain integrity in sunny climates. Moisture resistance determines how the wood handles rain and humidity.
Ground contact is where all four get tested at once. Posts rot at soil level first, often while the rest of the structure looks sound, which is why footing detail matters more on wood than on steel.
Treatment, finishing, and safety
Wood needs finishing work that other materials don't, and it's a safety requirement rather than a cosmetic one.
Confirm the treatment is appropriate for playground use. Modern pressure-treated lumber uses copper-based preservatives, and any supplier should be able to tell you exactly what a product was treated with.
All surfaces need sanding and sealing. Splinters are the most common wood playground complaint, and smooth, sealed surfaces are how you prevent them.
Hardware should be recessed or capped. Wood shrinks and swells seasonally, which can expose bolt ends that were flush at installation.
Grips and handholds benefit from non-wood components. Rubber or plastic grips on swings and playhouses give children a consistent surface at the contact points that wear fastest.
One clarification worth making: the Americans with Disabilities Act governs accessibility, meaning routes, ground-level components, and surfacing. It has nothing to say about wood species or sealant chemistry, so treat those as separate decisions.
Maintenance by species
Every wood species needs the same maintenance, just on different intervals.
Reseal every two to three years as a baseline, and more often on pressure-treated pine or in harsh climates. Cedar and redwood can sometimes stretch the interval, though stretching it is what turns a 20-year structure into a 12-year one.
Inspect annually at minimum. Check for splinters, cracks, soft spots at ground level, and hardware that has worked loose, and sand and reseal worn contact surfaces as you find them.
Clean on a schedule too. Dirt and mildew hold moisture against the wood, so a gentle wash with soap and water is genuine maintenance rather than housekeeping.
When to specify steel and plastic instead
For most high-traffic commercial sites, wood isn't the right answer, and it's worth being direct about why.
Powder-coated galvanized steel doesn't rot, doesn't splinter, and needs no resealing. Play structures built on steel posts with plastic decks and panels are the standard commercial configuration for exactly this reason.
The same logic applies to site amenities. Recycled plastic furniture for benches and tables eliminates the refinishing that wood versions require, and it holds up better under weather and use.
The deciding question is maintenance capacity. If you have a grounds crew and a recurring budget line for sealing, cedar or redwood can serve well for two decades. If you don't, specify steel and plastic and put the savings into the play value.
Choose durable playground equipment from AAA State of Play
Cedar and redwood are the best woods available, and steel and plastic get you a longer life with far less upkeep. AAA State of Play supplies commercial play structures, natural play components, and site amenities to schools, parks, churches, and daycares. Contact us today for a free quote!