What Is the Best Decking Material for Texas? Every Option Compared for Heat

This guide judges every common decking option on Texas conditions: 100°F summers, hard UV, Gulf humidity and termites. Every number is sourced. Most prices are national, because we found published Dallas installed prices only for composite and pressure-treated pine.

What is the best decking material for Texas?

For most Texas homeowners it comes down to budget versus upkeep: treated pine costs least up front, capped composite and PVC need the least care, and ipe is the toughest natural wood. In Dallas, pressure-treated pine runs $15 to $30 a square foot installed and composite runs $25 to $50, according to Block Renovation's 2026 Dallas guide.

Upkeep is where they split. Block Renovation says a treated wood deck needs cleaning and resealing every two to three years, while composite needs no sealing, just a wash two or three times a year.

• Pick pressure-treated pine if you want the lowest price and don't mind resealing. Block Renovation puts its life at 10 to 15 years.
• Pick capped composite if you want low upkeep at a mid-range price. Block puts it at 25 to 30 years.
• Pick PVC if you want no wood in the board at all and maker warranties up to 50 years.
• Pick ipe if you want real wood that the USDA Forest Products Laboratory rates very resistant to decay.
• Pick cedar if you like the look and accept that, on a deck, it lasts about as long as treated pine.
• Pick aluminum if heat matters most and budget matters least. It read coolest in an informal heat test.

Best decking materials for Texas climate: heat, UV and humidity compared

Here is every common option side by side, with cost, lifespan, heat and upkeep. Dallas figures say Dallas; everything else is national. The two national sources disagree: Fixr's 2023 table puts PVC below composite, Block Renovation's 2026 guide puts PVC above it, and Block's aluminum range is far higher than Fixr's. We show both rather than averaging them.

Heat readings come from one informal 2012 Colorado contractor test, not a lab study. For a fuller lifespan breakdown, see our guide to whether to repair or replace an old deck.

To turn those ranges into a whole deck: calculated from Fixr's 2023 national installed ranges (Fixr's installed decking prices only; it prices framing, railing and stairs separately), a 300 sq ft deck works out to about $4,500 to $7,500 in treated pine, $5,700 to $8,700 in cedar, $8,100 to $11,400 in redwood, $8,400 to $12,000 in composite, $9,000 to $16,500 in ipe and $7,500 to $9,000 in aluminum. These are 2023 national figures, Block's 2026 ranges run higher, and none of them is a Dallas quote. For local numbers, see what a deck costs in Dallas.

How hot does each decking material get in Texas sun?

In the one informal test that measured nearly every material, aluminum read coolest at 131.5°F to 133.5°F and weathered cedar hottest at 170.2°F, with ipe, pine, new cedar and most synthetic boards between 141°F and 162°F. A Colorado contractor took the readings with an infrared thermometer at 11:45 am on June 25, 2012, with the air at 86.5°F, after a few hours of sun.

We found no independent surface test for Texas, where the National Weather Service says DFW highs in July and August are consistently in the 90s and often reach or exceed 100 degrees.

A Sarasota, Florida, decking seller's own infrared test found teak at about 120°F, several composites above 140°F, and every hardwood it tested cooler than the composites. It sells those hardwoods, so read that as a seller's result.

The makers have their own claims. Trex says its SunComfortable boards build up to 35°F less heat than its original boards in its lab testing, and also that "like all decking, it will get hot in direct sun on hot days." TimberTech says its AZEK PVC runs up to 30° cooler than competing products, and that all decking gets hot in the sun. Wahoo says its AridDek aluminum gets hot in summer but conducts heat away, and Thermory says its wood heats up less than many materials, with no number.

Shade does more than any board. Block Renovation says a covered patio drops the temperature underneath by 15 to 25 degrees compared with an exposed surface. If your deck takes the afternoon sun, look at a covered deck or pavilion. For the full heat comparison of composite, cedar and treated pine, see Trex vs cedar vs pressure-treated in Dallas heat.

UV and fading

Every wood turns silver-gray in the sun unless it's stained or oiled, while capped composite and PVC hold their color far longer but still fade a little. Block Renovation notes that Dallas UV is intense from May through September. The Forest Products Laboratory says UV removes the colored parts of the wood surface, leaving it silvery gray, and that darker finishes heat up more, which means more warping and checking. Ipe and thermally modified boards gray the same way unless oiled. TimberTech says the polymer cap on composite protects against UV fading, and Block says composite handles UV better than wood, though years of direct sun still cause some fading and surface wear. TimberTech's AZEK PVC carries a 50-year fade and stain limited warranty.

Humidity, rot and termites in Texas

Rot and termites start where wood stays wet or touches soil. Formosan termites have already been found in Dallas County, and only treated pine rated for ground contact or very resistant woods like ipe belong near the ground.

DFW is not a dry climate. The National Weather Service says Gulf moisture keeps summer humidity high, and yearly rainfall swings from under 20 inches to over 50.

Termites add to the risk in Texas. The Forest Products Laboratory says subterranean termites are more common in southern states than northern ones, and the hazard is greatest close to the ground. Texas A&M's urban entomology program puts it plainly: wherever wood touches soil, the risk is high. Texas A&M also reports Formosan termites detected in 31 Texas counties, Dallas County among them, spread mainly by infested recycled railroad ties and shoring timbers, though it says there is little chance of meeting them outside the upper Gulf Coast. Keep old railroad ties away from your deck.

Here is how the woods rate in the USDA Wood Handbook's decay table (heartwood only):

Two caveats matter in Texas. The handbook says decay resistance may be lower for wood in ground contact or in warm, humid climates, and untreated sapwood of nearly every species has low resistance. On termites, it says few US woods resist them: the close-grained heartwood of California redwood has some resistance, and very resinous southern pine heartwood is practically immune but seldom available. Cedar isn't on that list.

Pressure-treated pine: grades, ground contact and what to buy

Buy deck boards rated UC3B or higher and posts rated UC4A for ground contact, and pick Premium grade boards if looks matter. Those are the American Wood Protection Association's use categories: UC3B for above-ground boards, railings and stairs, and UC4A for posts, structural posts and the ledger. Joists and beams can be UC3B above ground or UC4A in ground contact. AWPA adds that joists and beams that are hard to replace and critical to the structure may need ground-contact treatment even when they sit above ground. The category is printed on the end tag or treatment stamp.

Untreated southern pine has little natural decay resistance, which is why it's treated. Under southern pine grading rules, Premium decking has the smallest knots and is for when appearance matters most, while Standard is slightly less strict and looks more rustic. Southern pine decking can span supports up to 24 inches on center, or 16 inches for imported southern pine. For framing lumber, No. 2 covers most general construction, No. 1 is stronger and better looking, and Prime is No. 2 strength with appearance limits.

Treated lumber often arrives wet, so let it dry or buy KDAT (kiln dried after treatment), as the Forest Products Laboratory suggests. It says wood decks usually get replaced because of splitting and checking, not decay, and that keeping a water-beading finish on the surface can give 40 or more years of service. Use a penetrating finish, not a film-forming one, which tends to peel on decks.

Cost and life: $15 to $30 a square foot installed in Dallas (Block Renovation) and $15 to $25 nationally (Fixr, 2023). Block expects 10 to 15 years with a clean and reseal every two to three years. The lab's 40-year figure assumes that finish is kept up.

Cedar and redwood: how they hold up in Texas

Cedar and old-growth redwood heartwood resist rot above ground, but the Forest Products Laboratory doesn't rate cedar as termite resistant and says naturally durable woods like cedar last about as long as treated pine as deck boards.

Cedar costs $19 to $29 a square foot installed nationally per Fixr, and redwood $27 to $38. Block Renovation groups the two at $25 to $55 with a 15 to 25 year life. The Western Red Cedar Lumber Association claims 25 or more years of service life. That is the cedar industry's own figure.

With redwood, the age of the tree matters: the handbook rates old-growth heartwood resistant and young-growth heartwood only moderately resistant. The handbook also credits redwood's close-grained heartwood with some termite resistance.

For Texas, ask for heartwood, since decay resistance drops in warm, humid climates and the sapwood of both woods is low in resistance. Don't count on cedar being cooler underfoot either. In the informal Colorado test, new cedar read 148.6°F and weathered cedar 170.2°F, the hottest board there.

Ipe and other tropical hardwoods

Ipe is one of the few woods the Forest Products Laboratory rates very resistant to decay, and it costs roughly $30 to $55 a square foot installed nationally (Fixr, 2023). Calculated from Fixr's 2023 national ranges, that is about 2 to 2.2 times the cost of treated pine at each end of the range.

Very resistant woods generally perform well even in ground contact. Old-growth teak shares that rating, American mahogany rates resistant, and young-growth teak moderately resistant. Mahogany runs $35 to $50 a square foot installed nationally per Fixr.

Fixr says ipe needs little maintenance and is so dense it resists burning nearly as well as concrete. That is Fixr's description, not a fire rating. A hardwood seller claims a 50-plus year lifespan for premium species like ipe. On heat, ipe read 141.3°F in sun in the Colorado test, among the cooler boards, and 86.4°F in shade.

Thermally modified wood: is it good for Texas?

Thermally modified wood is real wood baked with heat and steam instead of chemicals. It is warranted for above-ground use only, and a USDA field test in humid Mississippi found that almost all samples placed close to the ground failed without an extra coating or treatment.

Thermory heats its wood to 190 to 215°C (about 375 to 420°F, converted from Thermory's figure) using only heat and steam. It rates thermo-ash, thermo-oak and thermo-spruce at durability class DC1 (25-plus years of protection against decay) and thermo-pine at DC2 (15-plus years). It asks for re-oiling or cleaning once a year and boards at least 100 mm (about 4 inches) off the ground.

Arbor Wood Co.'s 2023 warranty is a prorated 20-year limited warranty against fungal decay, buckling and structural failure, above ground only, with no color coverage. It pays 100% in years one to three, then drops 6.66% a year.

The independent data is less encouraging. In a USDA Forest Products Laboratory field test at Saucier, Mississippi, running since 2013, almost all the thermally modified samples close to the ground failed unless they had a supplementary coating or treatment. The researchers describe thermally modified wood as a trend in areas of low decay and insect pressure, and say more testing is needed where termite pressure is high. Given Texas termites, treat it as unproven here, especially on a low deck.

JLC reported in 2015 that thermally modified southern yellow pine loses about 25% of its strength (a lumberyard owner said it still works over 16-inch-on-center framing), and that builders pre-drill it and see it gray within about three months untreated. It put thermally modified ash at about the price of ipe or a bit more, and thermally modified pine on par with cedar.

Capped composite: what it is and what it costs in Dallas

Capped composite is a core of recycled wood fiber and plastic wrapped in a 100% polymer shell, and in Dallas it runs $25 to $50 a square foot installed (Block Renovation). Nationally, Fixr lists $28 to $40 and Block $30 to $60, and Trex estimates materials alone at $15 to $30 a square foot.

TimberTech says many brands cap three sides of the board, and the cap protects against moisture and UV fading. Capping is now the norm: Trex dropped its last uncapped board in 2014. Wood expands across its width, but capped composite expands along its length, so the gap at board ends depends on the temperature on install day. TimberTech specifies 1/32 inch at 75°F and above and 1/8 inch from 33°F to 74°F. In a Texas summer, ask your installer how they set those gaps.

Trex says its composite cleans with soap and water, resists termites, won't rot, warp or splinter, and shouldn't be stained or painted, since that may void the fade and stain warranty. Its recommended framing is pressure-treated lumber or steel. Trex's lines carry 25-year (Enhance), 35-year (Select) and 50-year (Signature, Transcend Lineage, Transcend) limited residential warranties. On heat, the synthetic "Prem Grain" boards in the Colorado test read 141.9°F to 157.1°F, and Trex says darker colors run hotter. For brands, boards and joist spacing, see our page on working with a composite deck builder in Dallas.

PVC decking: cost, heat and warranty

PVC has no wood in it at all, carries maker warranties up to 50 years (Trex Refuge, and TimberTech's AZEK fade and stain coverage), matching the top composite lines, and sources disagree on whether it costs more or less than composite. Fixr's 2023 national range is $17 to $33 installed, below its composite range. Block Renovation's 2026 range is $40 to $70, above its composite range. TimberTech, which sells both, says PVC is usually among the most expensive options, comparable to premium hardwoods like ipe and sometimes less.

Block expects 30-plus years from PVC. TimberTech says PVC warranties run up to 50 years or more, against up to 30 years for composite. Trex sells Refuge as ignition-resistant PVC decking with a 50-year limited residential warranty. TimberTech's Advanced PVC needs no end gap at any temperature.

Heat is the trade-off. In the Colorado test, PVC boards read 150.1°F to 162.1°F, the highest synthetic reading there. TimberTech claims its AZEK PVC runs up to 30° cooler than competing products.

Aluminum decking: the coolest board, at a price

Aluminum was the coolest board in the informal heat test (131.5°F off-white, 133.5°F white), won't rot, and is the priciest option in Block Renovation's 2026 guide at $50 to $85 a square foot installed. Fixr's 2023 national range is much lower: $25 to $30 installed and $15 to $20 for materials.

Wahoo, an aluminum decking maker, says its boards will never rot, warp or splinter, need no painting, staining or sealing, and that its Fortis and AridDek lines achieve Class A fire ratings. AridDek weighs 2 pounds per square foot and works as a waterproof system with a drainage channel. Wahoo also admits AridDek gets hot in summer. We didn't find a manufacturer warranty term for aluminum decking.

Deck framing: wood vs steel under the boards

Every deck sits on a frame, and Trex lists pressure-treated lumber or steel as its recommended framing. Steel costs more but won't rot or feed termites, and Fortress backs its Evolution steel framing with a 25-year limited warranty. Fixr's 2023 national figures put wood framing at $12 to $25 a square foot installed and metal framing (steel or aluminum) at $25 to $40.

With wood, the posts and ledger should be UC4A ground-contact lumber, and hard-to-replace joists and beams may need it too. Those are the parts closest to the soil, where termite risk is highest.

Fortress says its steel is Class A fire rated, noncombustible, G60 galvanized and powder coated, "invulnerable to rotting, warping, splitting, and insect damage," spans farther with fewer posts, and works with any decking brand. Fortress also claims wood framing typically starts deteriorating after 10 years. The Forest Products Laboratory's view is different: with a water-beading finish kept up, wood can give 40 or more years of service.

Which decking should you choose? Manufacturer guidance and a quick decision guide

Pick on how much upkeep you'll do and how much sun the deck gets, then choose the lightest color you like. Trex says "the darker the color, the hotter the deck will feel" and recommends a lighter color for hotter climates, and TimberTech says all decking products will get hot in the sun. The thermally modified makers limit their boards to above-ground use and ask for yearly oiling or cleaning. For wood, the USDA lab says to use penetrating finishes and avoid dark ones.

1. Full afternoon sun: color and shade matter more than the board. A cover cuts the temperature underneath by 15 to 25 degrees (Block Renovation).
2. Tight budget: treated pine at $15 to $30 a square foot installed in Dallas, with a reseal every two to three years.
3. Low upkeep: capped composite at $25 to $50 in Dallas, or PVC if you want no wood content at all.
4. Real wood that lasts: ipe, rated very resistant to decay. Cedar lasts about as long as treated pine on a deck.
5. Low deck near the ground: keep wood out of the soil, use UC4A posts, and skip thermally modified boards close to the ground.

Archetex Outdoor Design Co. designs and builds custom composite and wood decks around Dallas and gives a free site visit and written price. If you're weighing composite against wood for your yard, see our Dallas deck builder page or get in touch. If you're comparing several builders, here is how to choose a deck builder.