As an Amazon Associate I earn from qualifying purchases.
Boards and cost for Trex, TimberTech, AZEK, Fiberon, and Deckorators.
With these inputs:
| Result | Value |
|---|---|
| Board & fastener cost | $1,456 – $1,772 |
| Trex Enhance Basics boards (16 ft) | 29 boards |
| Deck area | 192 sq ft |
| Cost per sq ft (boards only) | $5.94 |
| Hidden clip boxes (100 sqft ea.) | 2 |
| Rows of decking | 26 |
| Linear feet (incl. 8% waste) | 449.3 ft |
| Board material | $1,140 |
| Fasteners | $190 |
| Fascia / riser trim | $252 |
| Gap set by system | 0.1875" |
Composite requires 16-inch joist spacing (12-inch for diagonal layouts and stair treads). Prices are 2026 retail averages and vary by region and dealer; special-order colors run higher than in-stock.
Pick your composite brand and product line, enter your deck size, and get board counts plus a material and installed cost range using 2026 retail pricing for each line.
Trex Enhance Basics boards run about $5.50 per square foot for material; Select is near $7.90 and Transcend near $11.50. Fully installed with a pressure-treated frame, expect $38-$58 per square foot depending on the line and your region.
Grooved Trex boards are 5.5 inches wide and install with a 3/16-inch clip gap, so each 16 ft board covers about 7.6 square feet. A 12x16 deck (192 sq ft) needs 26 rows, or 29 boards at 16 ft including 8% waste.
Board-only material cost is $5.50-$11.50 per square foot depending on the line. Installed, most Trex decks land between $38 and $58 per square foot in 2026.
TimberTech Prime+ is priced close to Trex Enhance. AZEK and TimberTech Legacy are PVC products and cost meaningfully more than any capped-composite Trex line, but they're lighter and handle heat and constant moisture better.
A 16x16 deck is 256 sq ft and takes 37 boards at 16 ft. Boards, hidden clips and fascia run about $1,926 – $2,345 in Enhance Basics, $2,537 – $3,088 in Select and $3,452 – $4,203 in Transcend. Installed with a pressure-treated frame, it runs from about $7,759 in Enhance Basics to $11,823 in Transcend.
No. Trex RainEscape is an under-deck drainage system of troughs and gutters that keeps the space below the deck dry, sold in brown or black with a 25-year warranty (trex.com). It is priced separately from the decking, so get a dealer takeoff from your deck's length and width and add it as its own line.
Yes — 16 inches on center for perpendicular boards and 12 inches on center for diagonal layouts or stair treads. Some brands require even tighter spacing for 45-degree installs; check the specific installation guide.
Need the whole roof at once? The free roofing calculator works out roof area, squares, shingle bundles, underlayment, drip edge, ridge cap and installed cost from one set of measurements.