A composite deck costs more upfront than pressure-treated lumber, and the number on the quote can give homeowners sticker shock. But understanding Trex decking pricing shows why so many people still choose it: you pay more once and skip decades of staining, sealing, and board replacement. A typical 300-square-foot Trex deck runs $4,500 to $10,000 installed depending on the product line and labor in your area. Here is exactly where that money goes so you can budget accurately and avoid surprises.
Trex sells several tiers, and the price gap between the entry line and the flagship is significant. Knowing the difference lets you match your spend to what actually matters for your project.
Cost by Trex Product Line
Trex organizes its boards into good, better, and best tiers, each with its own price and performance. Material cost per square foot for boards alone breaks down roughly like this:
- Trex Enhance Basics: $2 to $4 per linear foot; the budget entry point
- Trex Enhance Naturals: $3 to $5 per linear foot; better color range and grain
- Trex Select: $4 to $6 per linear foot; improved scratch and fade resistance
- Trex Transcend: $5 to $9 per linear foot; the flagship with the richest finish and best warranty
Most boards come in 16 and 20-foot lengths. As a rule of thumb, expect Trex board material to cost $7 to $12 per square foot before fasteners, framing, or labor when you account for the deck surface coverage.
Installation Labor Costs
Labor often equals or exceeds the cost of the boards themselves. Professional installation typically adds $15 to $30 per square foot depending on your region, deck height, and design complexity. A simple ground-level rectangle costs far less per foot than an elevated, multi-level deck with stairs and angles.
Composite boards install with hidden fastener clips, which look clean but slow the work compared with screwing down lumber. Expect a contractor to charge for that extra time. Getting three written quotes is the single best way to keep labor pricing honest.
The Substructure You Cannot Skip
Here is the cost homeowners forget: Trex makes the surface, but the frame underneath is usually pressure-treated lumber or Trex’s own steel framing. The joists, beams, posts, and footings can add $5 to $15 per square foot on their own.
Composite boards are heavier and require joist spacing of 16 inches on center or tighter, sometimes 12 inches for diagonal patterns, which means more lumber than a wood deck. If you are replacing only the deck boards on a sound existing frame, you save enormously. Building new from footings up is where the budget climbs.
Hidden and Add-On Costs
Several extras catch people off guard. Hidden fastener systems run about $0.40 to $0.80 per square foot. Matching fascia board to wrap the deck edges adds cost. Railing is a major line item on its own: Trex composite railing typically costs $30 to $60 per linear foot installed, and on a deck with lots of perimeter that can rival the decking itself.
Other items to budget for include stairs (often $100 to $200 per step), permit fees of $100 to $500 depending on your municipality, and removal and disposal of an old deck, which can run $500 to $1,500.
Trex Versus Wood Over Time
Pressure-treated decking costs roughly half as much to install, but that comparison ignores the long game. Wood needs cleaning, sanding, and resealing every two to three years, at $0.50 to $1.50 per square foot each time, plus board replacement as pieces warp and rot.
Trex needs only an occasional soap-and-water wash and carries a 25-year limited residential warranty on most lines, with the Transcend tier offering up to 50 years on fade and stain. Over 25 years, the maintenance savings frequently close the gap with wood entirely.
Factors That Push the Price Up or Down
Two decks of the same size can differ in price by thousands of dollars depending on a handful of variables. Deck height is a major one: an elevated deck requires taller posts, more bracing, stairs, and often safety railing on all sides, all of which add material and labor. A ground-level deck is far cheaper per square foot.
Design complexity matters just as much. Picture-frame borders, diagonal or herringbone board patterns, curved sections, and multiple levels all increase cutting waste and labor hours. Site access affects cost too, since a backyard with no easy path for materials forces hand-carrying that adds time. To keep Trex decking pricing down, choose a simple rectangular, ground-level layout with straight board runs.
DIY Versus Hiring a Contractor
Installing Trex yourself can cut the project cost roughly in half by eliminating labor, and the hidden-fastener system is designed to be DIY-friendly. A handy homeowner with basic carpentry skills can build a simple ground-level deck over a weekend or two, saving $15 to $30 per square foot in labor.
That said, the substructure is where mistakes get expensive and dangerous. Footings must hit the right depth, joist spacing must meet code for composite boards, and the ledger connection to the house must be flashed correctly to avoid rot. If you are not confident framing to code, hiring a pro for the structure and possibly the whole job protects your investment. A failed inspection or a sagging deck costs far more than the labor you tried to save.
Budgeting Your Project
For a realistic all-in figure, plan on $30 to $60 per square foot installed for a complete new Trex deck with railing, which is the range most homeowners actually pay. A board-only replacement on existing framing can drop to $15 to $25 per square foot.
To control Trex decking pricing, choose the Enhance line for a simple deck where premium aesthetics matter less, save the Transcend tier for highly visible spaces, and design a shape with minimal angles and cuts. The simpler the footprint, the lower your labor and waste, which is where real savings hide.
Timing your purchase can save money too. Decking material and labor both tend to be cheaper in late fall and winter, when demand drops and contractors have open schedules, compared with the spring and early summer rush. Always order about 10 percent extra board footage to account for cuts and waste, and get itemized quotes that separate boards, framing, railing, and labor so you can compare bids accurately and spot where one contractor is padding the price. With a clear understanding of each cost layer, you can build the deck you want without the budget surprises that catch so many homeowners off guard.
