Cedar vs Pressure-Treated Decking: Cost & Value 2026

Pressure-treated pine is cheaper, at roughly $3 to $6 per square foot for boards against $6 to $12 for western red cedar in 2026. Installed, that reads as about $20 to $35 per square foot for pressure-treated and $28 to $45 for cedar. On a 320 square foot deck the decking line item is therefore around $1,300 in pressure-treated and around $2,600 in cedar, which sounds decisive until you put it against the whole project. Framing, footings, railings and labour usually dominate the bill, so the species choice typically moves the total by only 10 to 20 percent. Region matters too: cedar ships from the Pacific Northwest, so it is priciest in the Midwest and East, while pressure-treated pine is cheap almost everywhere. If the deck is large, the gap becomes real money and pressure-treated has a genuine argument. If it is small, you are arguing over a few hundred dollars on a deck you look at daily.

Usually not, which surprises people who assume the pricier wood lasts longer. Pressure-treated southern yellow pine is forced full of preservatives and, maintained, is rated at 15 to 25 or more years. Cedar relies on its own oils, the thujaplicins, and gives 15 to 20 or more years weathered, longer if kept sealed. So structurally they are close and pressure-treated often edges it. What differs is how each one ages. Pressure-treated ships wet and then shrinks, checks and can twist as it dries, so warped boards and popped fasteners are common in the first year. Cedar is lighter and more dimensionally stable, lying flatter and cupping less, but it is softer, so it dents and scratches more readily and wears faster in traffic lanes. In practice cedar tends to look better for longer while pressure-treated tends to stay serviceable for longer.

Neither, and this is where both woods lose to composite. Both need washing and a fresh coat of penetrating stain or sealer on a one to two year cycle. Skip it and the failure modes differ only cosmetically: pressure-treated greys and checks, cedar greys and goes fuzzy. The sequencing does differ. New pressure-treated lumber usually has to dry for a few months before it will accept a finish at all, so a new deck waits before its first seal. Cedar wants sealing sooner and slightly more often, because its softer fibres benefit from the protection and a UV-blocking semi-transparent stain is what holds the reddish-brown against silvering. Budget about $0.50 to $1.50 per square foot in materials for each reseal if you do the work yourself, more if you hire it out. If low upkeep is the actual goal, the honest answer is to compare both against composite.

Yes, and it is one of the better value moves in decking. Once new pressure-treated lumber has dried out, which commonly takes a few months on a fresh deck, a cedar-tone semi-transparent stain produces a warm reddish colour close to cedar for a fraction of the material cost. Test a board first, because treated pine varies from green to tan underneath and that base colour shifts the result. What staining cannot change is texture. Pressure-treated grain is coarser and carries more knots, so up close the board still reads as pine, particularly at cut ends and around fasteners. It also does not change behaviour: the boards will still shrink and check as they dry, and the stain cycle continues every one to two years. If the look is what you are buying and the budget is tight, stained pressure-treated is a sensible compromise rather than a pretence.

Pressure-treated, almost without exception. Joists, beams, posts and the ledger carry the load and sit closest to moisture and soil, which is exactly what preservative treatment and ground-contact ratings are for. Cedar belongs on the visible surfaces: decking boards, fascia, trim and sometimes railing. That split is why the cedar-versus-pressure-treated question is really only a question about the walking surface, since the structure under either deck is the same treated lumber. Two consequences follow. First, the framing cost is identical whichever surface you pick, which is part of why the species choice moves the project total less than the board price suggests. Second, both decks answer to the same code. Footings, joist and beam spans, ledger attachment and railing all follow the IRC deck provisions regardless of what you walk on, so there is no structural shortcut in choosing the more expensive board.