20 FAQs on Trex Decking: Everything You Need to Know

Trex decking has revolutionized outdoor living with its durable, eco-friendly composite materials that mimic the beauty of wood without the hassle. Made from up to 95% recycled content, it’s a sustainable option for patios, docks, and more.

Whether you’re considering a new build or upgrading an existing space, we’ve compiled answers to the top 20 frequently asked questions based on official guidelines and expert insights. Let’s dive in!

1. How to clean Trex decking?

Trex decking requires minimal upkeep. For routine cleaning, use warm soapy water (mild dish soap) and a soft-bristle brush to scrub the surface, then rinse with a hose. Semi-annual cleanings (spring and fall) prevent pollen and debris buildup.

For stubborn dirt, mud, or pollen, a pressure washer up to 3100 PSI with a fan tip (held at least 8 inches away) works well on high-performance lines like Transcend, Enhance, or Select. Avoid harsh chemicals like bleach** unless addressing deep mildew—in that case, use a diluted 1:4 bleach-to-water solution and rinse immediately. For early-generation boards, stick to soap and water, as pressure washing can damage the surface.

** Use of products containing bleach or acid can lighten the surface of Trex. Use in an inconspicuous area to determine whether you like the effect. Neither product will affect the structural integrity of Trex.

2. Can you paint Trex decking?

No, painting is not recommended for newer-generation Trex decking (post-2010), which features a protective shell. Paint traps moisture, leading to cracking or splitting, and voids the warranty. For early-generation uncapped boards (pre-2010), painting is possible after fading occurs (about 12 weeks), using exterior latex acrylic paint or stain for decks. However, this defeats the low-maintenance purpose of Trex—opt for replacement instead if aesthetics are the issue.

3. How much is Trex decking?

Trex decking materials cost $5 to $15 per square foot, depending on the line: Enhance ($5–$7), Select ($7–$9), and Transcend ($10–$12). Fully installed, expect $20 to $62 per square foot, including labor ($8–$22 per square foot), substructure, railings, and stairs. For a 12×16-foot deck, total costs range from $8,650 to $13,450. Factors like design complexity, location, and add-ons (e.g., lighting or drainage) influence the price. In 2025, prices remain stable, with averages around $48 per square foot installed.

4. Where is Trex decking made?

Trex decking is manufactured in the USA at facilities in Winchester, Virginia, and Fernley, Nevada. The company sources reclaimed wood and recycled plastic domestically, making it one of North America’s largest recyclers of plastic film.

5. How thick is Trex decking?

Trex deck boards vary by line: Enhance and Transcend are typically 0.94 inches thick (24 mm), while Select is 0.82 inches (21 mm). Some specialty boards, like 2×6 options in Transcend Tropicals, measure 1.3 inches thick. Fascia boards are 0.56 inches thick.

6. What is Trex decking?

Trex decking is a high-performance composite material designed as a low-maintenance alternative to wood. It’s engineered from a blend of reclaimed wood fibers and recycled plastic, offering the look of wood with superior durability. Trex resists rotting, warping, splintering, and insects, and never needs staining or painting. It’s ideal for decks, docks, and high-traffic areas, with options for custom curves and eco-friendly construction.

7. How long does Trex decking last?

Trex decking lasts 25 to 50 years or more with proper care, outlasting wood’s typical 15–20-year lifespan. Warranties match this: 25 years for Enhance, 35 years for Select, and 50 years for Transcend, Lineage, and Signature lines. Its recycled composition and protective shell ensure longevity against weathering.

8. Does Trex decking get hot?

Like any outdoor surface, Trex decking absorbs heat in direct sun, with darker colors getting hotter. However, newer lines like Transcend Lineage and Enhance (with SunComfortable technology) reduce heat buildup by up to 35 degrees compared to original boards. Lighter colors are recommended for hotter climates to minimize discomfort.

9. Can you power wash Trex decking?

Yes, for high-performance lines (Transcend, Enhance, Select), use up to 3100 PSI with a fan tip held at least 8 inches away. Add soap for better results, and rinse thoroughly. Avoid power washing early-generation boards, as it can damage the surface and void the warranty.

10. How wide is Trex decking?

Standard Trex deck boards are 5.5 inches wide (140 mm). Fascia options are 7.25 inches or 11.375 inches wide. Some Transcend Tropicals offer 3.4-inch widths for specialty uses like railings.

11. Can you stain Trex decking?

Similar to painting, staining is not advised for capped Trex boards, as it voids the warranty and isn’t necessary. For early-generation uncapped boards, acrylic latex stain with mildew and UV inhibitors can be used, but it’s generally not recommended—replace with the newer more durable Trex instead for best results.

12. What is Trex decking made of?

Trex is composed of 95% recycled materials, including reclaimed sawdust/wood fibers and recycled plastic film (e.g., grocery bags, dry cleaner bags). This eco-friendly blend creates a durable, sustainable product that’s one of North America’s largest plastic recyclers.

13. Does Trex decking scratch easily?

No, Trex’s high-performance shell resists scratching, with Signature being the most scratch-resistant. Transcend and Lineage also excel in high-traffic areas. Minor scuffs fade naturally over 12–16 weeks, or use a deck brightener to accelerate.

14. Is Trex decking fire resistant?

Trex has Class B or C flame-spread ratings depending on the line (e.g., Transcend and Select are Class B). WUI-compliant options meet strict wildfire safety standards for high-risk areas, resisting ember ignition while maintaining durability.

15. How to cut Trex decking?

Cut Trex like wood using a carbide-tipped blade (fine-tooth for clean cuts). You can rip boards width-wise but not thickness-wise. For curves, heat-forming is possible on some lines, but consult guidelines. Always wear safety gear and support boards during cuts.

16. What is the maximum joist spacing for Trex decking?

Maximum joist spacing is 16 inches on-center for perpendicular boards. For diagonal (45-degree) layouts or stairs, reduce to 12 inches on-center. Closer spacing (e.g., 12 inches) is recommended in hot climates or high-traffic areas to prevent sagging. Stairs often require narrow spacing like 8 inches on center in some cases. Always refer to the manufacturers installation instructions before installing Trex decking.

17. What is the best cleaner for Trex decking?

Warm soapy water with a soft-bristle brush is ideal for everyday cleaning. For tough stains, use a composite-specific cleaner like Olympic Premium Deck Cleaner or a deck brightener with oxalic/phosphoric acid. Avoid chlorine bleach or harsh abrasives.

18. Can you glue Trex decking?

Gluing is not recommended for standard installations, as it may void the warranty. Trex advises against it unless for specific applications—contact customer care for guidance. Use approved fasteners instead for secure, warranted results.

19. Can you put salt on Trex decking?

Yes, use calcium chloride or rock salt to melt ice. Rinse off when practical to avoid residue. Avoid metal shovels—use plastic to prevent scratches. Salt won’t damage the material but should be cleared promptly.

Pro Tip: Once snow and ice melt broom off any residual rock salt then take a warm damp mop with plain water to clean salt residue off the decking surface. This is a simpler way to get the salt off your deck since hosing off your deck in the middle of winter is not practical or advisable.

20. What lengths does Trex decking come in?

Trex boards are available in 12-foot, 16-foot, and 20-foot lengths. Fascia and risers come in 12-foot lengths. Choose based on your design to minimize cuts and waste.

Trex decking combines innovation, sustainability, and ease for a superior outdoor experience. If you’re ready to start your project, consult a professional for personalized advice. For the best deals on Trex decking visit AdvantageLumber.com and order Trex decking online and get it shipped directly to your home.