The Real Question Isn't "Which Is Cheaper" — It's "Cheaper When"
Pressure-treated pine and composite (Trex, TimberTech, and similar capped-polymer boards) solve the same problem — a flat outdoor platform attached to your house — but they cost money on completely different schedules. Wood is cheap to build and expensive to keep looking decent. Composite is the reverse. In the Triangle, where summers are long and humid, that schedule matters more than it does in a drier climate.
FairlyQuoted's local market data puts a typical new deck build in the Raleigh-Durham area at roughly $7,500–$14,000. Decking material choice is one of the biggest reasons a job lands at the low or high end of that range, so it's worth doing the 10-year math before you pick a board.
Upfront Cost: Where Wood Wins Every Time
For a comparable footprint, size, and framing, pressure-treated lumber decking will almost always price out toward the lower part of that $7,500–$14,000 range. Composite decking pushes a job toward the middle or upper end, mainly because of three things: the boards themselves cost more per square foot, hidden fastener systems (used on most composite installs for a clean look) add labor time, and composite railing/fascia upgrades are often bundled in since builders rarely mix cheap wood trim with premium decking.
As a rough rule of thumb for a mid-size deck in this market: expect wood decking to shave a meaningful chunk off the total versus the same deck built in composite, all else equal. The gap is real, but it's a one-time gap — everything after the build day starts working in composite's favor.
The Maintenance Math Over 10 Years
This is where the comparison flips.
- Pressure-treated wood: Needs cleaning and re-sealing or staining on a recurring basis — typically every 1 to 3 years here, more often with full southern sun. Each round means a pressure wash, sanding raised grain, and a fresh coat of water repellent or stain. DIY, it's mostly your weekend and the cost of sealant; hired out, it's a real line-item expense each time. Skip it and the wood grays, cups, and splinters faster.
- Composite: Needs an occasional soap-and-water or composite-specific cleaner wash to knock off pollen and grime — no sealing, no staining, no sanding. The cash outlay over a decade is minor by comparison.
Add it up over 10 years and a diligently-maintained wood deck can easily cost as much or more in upkeep as the upfront price difference between wood and composite in the first place. A neglected wood deck costs less in upkeep dollars but ages visibly faster and may need board replacement sooner. Composite's maintenance bill is close to flat the whole decade — which is the entire pitch for paying more on day one.
Heat, Fade, and Splinters: The Climate-Specific Realities
The Piedmont's mix of hot, humid summers, heavy pollen, and afternoon thunderstorms stresses both materials, just differently:
Heat underfoot
Composite decking, especially in darker colors, absorbs more solar heat than wood and can get noticeably hotter to bare feet on a sunny, still summer afternoon. If you're picking colors for a deck that gets full sun most of the day, lighter composite tones or wood will be more comfortable in July and August.
Fading and graying
Untreated or unsealed wood grays within a season or two of UV exposure — that's cosmetic, not structural, but it's why sealing matters if you want the "new deck" color to stick around. Older-generation composite was known for fading unevenly in its first year or two before settling; modern capped composites fade far less, but "fade-resistant" doesn't mean "fade-proof" under a full southern exposure.
Splinters, rot, and moisture
Pressure-treated lumber resists rot and insects better than untreated wood, but it isn't immune, especially where boards stay damp — under planters, near downspouts, or shaded corners common in Triangle backyards. As PT wood ages and dries out unevenly, splintering becomes a real barefoot hazard on high-traffic boards. Composite has no splinter risk and doesn't rot, though surface mildew can grow in shaded, humid spots if it isn't rinsed occasionally.
Resale: Neither Is a Slam Dunk
Deck additions are generally considered one of the better-returning exterior projects at resale, but the return is a percentage of what you spend, not a fixed dollar bonus. Because composite decks cost more to build, they don't necessarily return a higher percentage than a wood deck — buyers value a solid, good-looking deck of either material, and a well-maintained wood deck can show just as well as composite if it's been sealed on schedule. What tends to hurt resale isn't the material choice, it's a deck that looks tired: graying, splintering wood or faded, chalky old composite. Whichever you choose, a deck that's been kept up will show better than one that hasn't.
Permits: One Thing That Doesn't Change With Material
Whether you build in pressure-treated wood or composite, most Triangle municipalities — Raleigh, Durham, Cary, and neighboring towns — require a permit for an attached deck, and often for detached decks above a certain height. Requirements and fees vary by jurisdiction and change over time, so confirm the current process with your local building department before work starts. Your contractor should pull the permit regardless of which material you choose.
The 10-Year Bottom Line
| Factor | Pressure-Treated Wood | Composite |
|---|---|---|
| Upfront cost (within $7,500–$14,000 range) | Lower end | Mid to upper end |
| Recurring upkeep (cleaning, sealing/staining) | Every 1–3 years | Occasional wash only |
| 10-year maintenance spend | Can approach or exceed the upfront cost gap | Minimal |
| Heat underfoot (dark colors, full sun) | Cooler | Can run noticeably hotter |
| Splinter risk as it ages | Increases without sealing | None |
| Resale | Solid if well-maintained | Solid, but doesn't guarantee a higher return on the extra spend |
If you plan to sell within a few years and don't want to think about sealing schedules, composite's flat maintenance curve is worth the higher upfront number. If you're staying long-term, don't mind a weekend of sealing every couple of years, and want to keep the build cost down, pressure-treated wood is a perfectly reasonable, honest choice — it's not the inferior material, just the higher-maintenance one.
Getting an Exact Number for Your Deck
Everything above is directional — your actual price depends on square footage, height off the ground, railing style, stairs, and how your yard's grading and sun exposure play into the build. The fastest way to get a real number instead of a range is to photograph the area where the deck will go, describe the rough size and what you want (railing type, stairs, material), and get an instant local price range back. That's the whole point of how FairlyQuoted works — no sales call required to find out where your project actually lands.