Trex vs. Cedar vs. Pressure-Treated Decks in Dallas Heat (2026)

Most advice on Dallas decking says cedar stays cooler underfoot and Trex is the low-maintenance pick. The second half holds up. The first has little behind it. This guide compares pressure-treated pine, cedar and composite on heat, cost, upkeep, aging and termites, with every figure sourced and labeled Dallas or not. If you already know you want composite, our composite deck builder in Dallas page goes deeper on boards and brands.

Is composite or wood decking better in Texas heat?

Neither stays cool on a Dallas afternoon. Color, shade and age matter more than whether the board is wood or composite. The common belief is cedar for barefoot comfort and Trex for low maintenance. The low-maintenance part is well supported. The cooler-cedar part isn’t.

The National Weather Service’s Fort Worth office says DFW summer highs are consistently in the 90s, often reach or exceed 100 degrees, and some nights stay above 80. Block Renovation’s 2026 Dallas guide notes that Dallas UV is intense from May through September.

How hot do Trex, cedar and pressure-treated deck boards get in direct sun?

In the only side-by-side tests we found that include cedar and treated pine, new cedar and treated pine read about 138°F to 150°F, against about 142°F to 162°F for the composite and PVC boards. Weathered cedar was the hottest board in the Colorado test, at 170.2°F.

These are informal tests by a deck builder, a home-building columnist and a decking retailer, not lab or university studies, and none was run in Dallas. We found no independent lab test of deck surface temperature and no Texas measurement for any decking.

Denver-area deck builder Kevin Stevens left samples in full sun for a few hours in Colorado and read them with an infrared thermometer, with the air at 86.5°F at 11:45 am (published by Networx, republished by KSAT in 2012). Tim Carter of AsktheBuilder used a FLIR camera just after noon on August 10, 2018, on a cloudless day after hours of sun. He didn’t give the air temperature.

A third informal test, by the decking retailer Advantage Lumber in Sarasota, Florida (2026), found several composite boards at 140°F or more and Plantation Teak at about 120°F, and every hardwood it tested ran cooler than the composites. It didn’t test cedar or treated pine, and the retailer sells both composite and hardwood decking.

What the readings suggest: treated pine came out cooler than Trex in one test and about even with composite in the other. New cedar was no cooler than treated pine, and gray, weathered cedar ran hottest of all. On this evidence, cedar is not a dependable way to keep a Dallas deck cool.

Why board color matters more than the brand

Darker boards, and darker stains on wood, run hotter, so a light gray composite or a light finish on cedar is the cooler pick. Trex says “the darker the color, the hotter the deck will feel.” TimberTech says all decking products will get hot in the sun, and recommends grays (Coastline, Slate Gray, Whitewash Cedar) and tans (Weathered Teak, Brownstone) for full sun.

Both makers also sell heat-mitigating boards, and both figures below are manufacturer claims with different baselines:

• Trex: its SunComfortable boards have up to 35 degrees less heat buildup than Trex’s original boards, in a lab test simulating full summer sun. The comparison used Lava Rock (without SunComfortable) against Salt Flat (with it).
• TimberTech: says its AZEK PVC is “up to 30° cooler” than competitive products, without naming which products.

The same rule applies to wood. The USDA Forest Products Laboratory’s Wood Handbook says darker finishes result in more solar heating, and more warping and checking. If you stain cedar or treated pine, a lighter stain keeps the boards cooler and helps them last.

Shade beats any decking material in Dallas

A roof or pergola over part of the deck does more for heat than any board choice. Block Renovation’s 2026 Dallas guide says a covered patio drops the temperature underneath by 15 to 25 degrees compared with an exposed surface. In the Colorado test above, Ipe read 141.3°F in the sun and an Ipe shade control read 86.4°F.

You can put a covered deck or pavilion over the part you sit in, or look at covered patios and pergolas next to the deck. If you add a roof, our guide to Dallas deck permit rules covers what applies.

Dallas TX deck building cost 2026 per square foot: composite vs cedar vs pressure-treated

In Dallas, treated pine runs $15 to $30 per square foot and composite $25 to $50 (Block Renovation, 2026 Dallas guide). No Dallas source prices cedar, but guides that aren’t Dallas-specific put it at $19 to $29 (Fixr, 2023) to $25 to $55 (Block Renovation, 2026 deck remodeling guide).

Read across a row, not down a column, because each row is a different source. Trex’s $15 to $30 is a materials estimate for a composite deck, including the substructure, not an installed price. For sizes, railing, stairs and resale, see our Dallas deck cost guide.

10-year cost of a 300 sq ft deck: Trex vs cedar vs pressure-treated (simple arithmetic)

Over 10 years treated pine is still the cheapest at the low end, but with frequent professional staining its total can pass the top of the Dallas composite range. The table below is simple arithmetic from the figures above, not a quote or an estimate from any source.

The assumptions:

• A 300 sq ft deck, boards and framing only, using the per-square-foot ranges above.
• Professional staining at Fixr’s national $2 to $5 per square foot, every 2 to 3 years. That is 3 recoats in 10 years on a 3-year cycle and 5 on a 2-year cycle.
• Cedar gets the same staining as treated pine, since Block Renovation says cedar needs a finish coat on a similar cycle if you care about its color.
• Composite gets no staining, since Trex says a soap-and-water clean is all it needs. No source prices composite cleaning, so it has no dollar figure here.
• Railing, stairs, repairs, cleaning supplies, inflation and replacement are left out.

Staining runs from 3 recoats × 300 sq ft × $2 ($1,800) to 5 × 300 × $5 ($7,500). The cedar rows use prices from outside Dallas because no Dallas cedar price exists.

At the high end of the staining range, a treated-pine deck’s 10-year total ($16,500) passes the top of the Dallas composite build range ($15,000), so it depends on how often you restain and who does it. No reputable source gives a break-even year, so we don’t give one.

Maintenance: what each deck asks of you in Dallas

Composite needs washing, while cedar and treated pine need a penetrating stain or sealer every 2 to 3 years to slow graying and checking. Block Renovation’s 2026 deck guide says treated pine needs cleaning and resealing on that cycle, cedar a finish coat on a similar one if you want to keep its color, and composite just a wash 2 to 3 times a year.

If you pay for it, Fixr (2025) puts professional deck staining at $2 to $5 per square foot, including light sanding and sealing. Its national average is $750, and a 20x20 (400 sq ft) deck runs $800 to $2,000.

Wood: use a penetrating finish, not paint

The Forest Products Laboratory recommends penetrating finishes on decks, because film-forming finishes peel. It rates paint and solid stain low for decking. Its finish table gives these expected lives for an average US location (not Dallas):

• Tinted deck finish: 1 to 2 years on new smooth decking, 2 to 3 on weathered.
• Semitransparent stain: 2 to 3 years on new decking, 3 to 6 on weathered.

Fixr says treated pine needs to be painted or sealed during installation. The Forest Products Laboratory warns that treated lumber is sometimes still saturated when installed, so wait for it to dry or buy lumber kiln dried after treatment (KDAT).

Composite: soap and water, no sanding

Trex says a soap-and-water clean is all its boards need. It also says never to sand them, and that painting or staining is not recommended and may void the fade and stain warranty.

Splinters, checking and fading: how each material ages

Wood decks are usually torn out because the boards crack and split, not because they rot, while composite resists splinters but still fades a little over years of sun. The Forest Products Laboratory says the most common reason for removing a pressure-treated deck is splitting and checking, not decay or structural problems.

That damage can be slowed. The same handbook says a periodic penetrating sealer decreases checking, and that keeping the wood water-repellent can give 40 or more years of service life. Unfinished wood also turns a silvery gray as the sun removes its colored components. Stain restores the color, and copper-treated wood may stay brown for about 2 years before it grays.

Composite ages differently. Block Renovation says composite, PVC and aluminum resist fading, warping and splinters, and Fixr says composite is less likely to splinter or fade than wood. Block also notes that standing water and years of direct sun eventually cause some fading and surface wear on composite. Trex offers 25-, 35- and 50-year limited warranties, and TimberTech gives its AZEK boards a 50-Year Fade & Stain Limited Warranty. Those are the makers’ terms.

How long does a cedar, pressure-treated or composite deck last?

Block Renovation puts treated pine at 10 to 15 years, cedar at 15 to 25 and composite at 25 to 30, with PVC at 30 or more. Fixr is more cautious on composite: it says wood decks last at least 10 to 15 years and composite about 20. None is specific to Dallas, and we found no Texas-specific lifespan.

The Forest Products Laboratory says that above ground, in uses such as decking boards, naturally durable wood like cedar and treated wood have quite comparable service lives. Upkeep, more than species, decides how long a wood deck lasts. If you already have an aging deck, our guide on whether to repair or replace an old deck has the full lifespan table.

Termites, rot and the frame underneath (Texas)

Termites get in where wood touches soil, Formosan termites have been found in Dallas County, and the frame under a deck matters as much as the boards on top. Texas A&M’s Urban and Structural Entomology Program says that wherever wood contacts soil there is a high risk of termites, and that mud shelter tubes are a sign of them. It reports Formosan termites in more than 30 Texas counties, including Dallas County, spread mainly through reused wood such as shoring timbers and recycled railroad ties used in landscaping. The Forest Products Laboratory says subterranean termites are more common in southern states, and the greatest hazard is to substructure wood close to the ground.

Cedar resists rot, not termites

The Forest Products Laboratory rates cedar heartwood as decay-resistant, while common pines, including the southern pine used for treated lumber, are slightly or nonresistant and need preservative treatment. That applies to heartwood above ground, where it generally gives satisfactory service. Untreated sapwood of nearly every species has low decay resistance, and resistance may be lower in warm, humid climates. On termites, the handbook lists only a few US woods as resistant, such as redwood heartwood to some degree, and cedar isn’t among them. Trex says its boards resist termites and won’t rot. That is the manufacturer’s claim.

Ask what the frame is made of

If the frame is treated lumber, the American Wood Protection Association’s use categories are the thing to ask about:

• Deck boards and railing: UC3B or higher.
• Posts and the ledger: UC4A, ground contact.
• Joists and beams: UC3B above ground, UC4A in ground contact. Ground-contact lumber may be required for joists and beams that are structurally critical or hard to replace.

Composite also needs tighter framing than many old wood decks. Trex says joists should generally be spaced no more than 16 inches on center, 12 inches for diagonal decking and 12 inches or less for heavier loads, with blocking where code requires it. Archetex sizes footings and framing to the home’s elevation and load, not a one-size prefab kit.

Does a composite or wood deck add more resale value in Dallas?

In Remodeling’s 2025 Cost vs Value data for Dallas, a wood deck addition recouped 99.8% of its cost and a composite one 92.1%. The wood deck cost $15,841 and added $15,813 in resale value. The composite deck cost $23,519 and added $21,658. Nationally, the same report has wood at 94.9% and composite at 88.5%. We found no 2026 report, and the report doesn’t publish deck sizes, so treat these as typical project totals.

Those figures don’t count a decade of restaining, which is where composite earns back part of its price.

Trex vs TimberTech vs AZEK: market options, briefly

All three sell lighter, heat-mitigating lines, and their cooler-board figures are the makers’ own claims. Trex’s lines run from Enhance (25-year limited residential warranty, with SunComfortable in Cinnamon Cove, Golden Hour, Honey Grove, Tide Pool and Pebble Beach) through Select (35-year) to Transcend, Transcend Lineage (heat-mitigating) and Signature (50-year), plus Refuge PVC (50-year). TimberTech sells EDGE (Prime, Prime+, Premier), PRO (Legacy, Reserve, Terrain) and its Advanced PVC with Cool Touch (Vintage, Landmark, Harvest, Harvest+), which it says “stays up to 30 degrees cooler.”

We name these as market options only. Archetex holds no brand certification or partnership with any of them. For a closer look at how the brands compare on heat, see our composite deck builder in Dallas page.

Which decking should a Dallas homeowner choose?

Choose composite for low upkeep, treated pine for the lowest starting price, and cedar for the look of real wood. Then put what’s left of the budget into shade and a light color.

A quick way to decide:

• You don’t want to stain every few years: composite, in a light gray or tan.
• You want the lowest build price and don’t mind upkeep: treated pine, with a light penetrating stain.
• You want real wood that resists rot: cedar heartwood, sealed on schedule so it doesn’t gray and check.
• You’ll use the deck on summer afternoons: plan a roof or pergola over part of it, whatever the boards.

Matthew has built decks in cedar, pressure-treated pine and grey composite, and helps you choose wood or composite based on maintenance and budget. Each job runs in four steps: consultation and material selection, footings and framing, decking and railing, then a final walkthrough and cleanup with care recommendations. Archetex doesn’t publish set prices. You get a written price after a free site visit. Start on the Dallas deck builder page, see the local pages for Richardson, Garland, Rowlett and Rockwall, or contact us to book a visit.