The brand-deep estimator for Trex composite decking. Pick a line — Transcend (incl. new Lineage heat-mitigation collection), Select, Enhance Naturals, Enhance Basics — pick a color, and get a real Trex bill of materials with TUHF box count, optional RainEscape under-deck, and Trex DeckLighting kits.
= hot in sun · = stays cool · = Lineage heat-mitigation cap
Plan-view length × width.
IRC R312 requires a 36″ guardrail above 30″.
IRC R312 mandates a 36″ guardrail above 30″. 40 lf of Trex Transcend Railing priced at $95/lf installed.
Trex Transcend ships with a transferable limited warranty covering structural integrity for 25 years and fade/stain for 25 years. Register at trex.com/owners/warranty/register within 30 days of install.
Trex Universal Hidden Fastener — 90 clips per box, 50 sqft coverage at 16″ joist o.c. Required reading: trex.com/install. The clip nests into the board's edge groove and screws into the joist for a clean screw-free surface.
Dark Trex colors (Tiki Torch, hex #7B3F1F) measure 160–175°F at the surface in direct sun on a 90°F day. Consider switching to a Lineage color (Rainier, Carmel, Biscayne, Jasper) — Trex's heat-mitigation cap runs 20–30°F cooler at the same color depth.
Trex retail pricing 2026-Q1 (Home Depot Pro Desk + Lowe's Pro + Trex Pro Platinum channel). Each line includes Trex part numbers where applicable.
Photoreal 3D · plan view · framing breakdown. Color matches the Trex Transcend Tiki Torch variant.
Trex's vetted installer network — same calculator inputs ready to share. Opens trex.com.
Within 30 days of install. Need board serial numbers from your contractor + install date.
Open the Composite Deck Cost Calculator to A/B Trex against TimberTech, Fiberon, Deckorators, and 3 more brands at the same dimensions.
Estimates use 2026-Q1 national-median pricing (Home Depot, Lowe's, Trex Pro Platinum channel). Expect ±15% variance vs your local market. Always get 3 contractor bids before signing. DeckMath is not affiliated with The Trex Company; Trex® and product names are trademarks of The Trex Company, Inc.
How to use
Transcend (premium, full Tropicals + Earth Tones + Lineage palette), Select (mid, focused 5-color palette), Enhance Naturals (premium scalloped value), Enhance Basics (entry-level value). Each line shows price-per-linear-foot and warranty band up front.
Up to 13 colors per line. Colors with a Flame icon are heat-rated 1/3 — they'll measure 160°F+ in full sun. Snowflake icons are heat-3 (cool). The Transcend Lineage collection (Rainier, Carmel, Biscayne, Jasper) uses Trex's newest heat-mitigation cap and runs 20-30°F cooler at the same color depth.
Length × width in feet. Pick a pattern — parallel is the standard, picture-frame adds a perimeter band, diagonal cuts at 45° (15% waste). The calculator quantizes board count using Trex's stocked lengths (12, 16, 20 ft).
TUHF (Trex Universal Hidden Fastener) is the default — it ships with grooved boards, leaves a screw-free surface, and is sold by the 90-clip box ($89, covers 50 sq ft). Face-screw uses Trex Hideaway color-matched plugs (30/pack, $28). DeckMath computes the exact box or pack count for your dimensions.
Trex Signature (aluminum, slimmest sightline, $188/lf installed), Transcend Railing (composite hardwood feel), Select Railing (Charcoal Black or Classic White), Enhance Railing (White only, value). 'No railing' is valid below 30″ deck height — auto-flagged above that.
Trex RainEscape under-deck water management ($3.50/sqft materials, $6.80/sqft installed) — recommended only when deck height > 96″ for proper drop. Trex DeckLighting kits — post-cap LEDs (1 per railing post), step lights (1 per riser), 100W transformer, plus wiring.
Labor rate varies 30%+ between regions. Northeast (1.22×) and West (1.28×) cost more than Midwest (1.00×) and South (0.92×) — RSMeans 2026-Q1 residential indices.
Hero range, top stat cards (boards, TUHF boxes, materials, labor), Trex part numbers in the materials breakdown, line-by-line auto-compare across all 4 Trex lines, 3D viewer, all-in totals box. Save link, export PDF, embed.
Material guide
Three honest paths. Composite wins the 25-year math for most homeowners, wood wins on upfront cost, and PVC is unbeatable around water. Each card below answers in one glance — recalculate the bill of materials by clicking a brand in the picker above.
How we calculate
The Trex Deck Calculator is the brand-deep estimator for the homeowner who has decided on Trex composite decking and wants a permit-ready bill of materials with real Trex part numbers, the right Trex Universal Hidden Fastener (TUHF) box count, optional Trex RainEscape under-deck water management, optional Trex DeckLighting LED kits, and a side-by-side same-deck comparison across all four current Trex lines — Transcend, Select, Enhance Naturals, and Enhance Basics. Pricing reflects 2026-Q1 retail from Home Depot, Lowe's, and the Trex Pro Platinum installer channel. Pick a line, pick a color from the full Trex palette (including the new Lineage heat-mitigation collection), and DeckMath will tell you exactly how many boards, how many TUHF boxes, how many post-cap LEDs, and what it'll cost installed in your state.
Per-LF retail prices reflect 2026-Q1 Trex pricing at Home Depot Pro Desk + Lowe's Pro + Trex Pro Platinum dealer channel. TUHF + Trex Hideaway specs from Trex install manuals (90 clips/box, 30 plugs/pack). DeckLighting kits priced from Trex DeckLighting catalog. Labor multipliers from RSMeans 2026-Q1 residential indices.
Rows = ceil(width × 12 ÷ (5.5 + 0.125)) — Trex face is 5.5″ with 1/8″ install gap. Waste % is pattern-driven: parallel 7%, picture-frame 12%, diagonal 15%.
Trex stocks Transcend, Select, and Enhance in 12, 16, and 20 ft. We pick 20 ft as the upper bound and round up; in real builds you'll mix to minimize cut waste.
Each TUHF box has 90 clips and covers ~50 sq ft at 16″ joist o.c. Total clips = boards × (length × 12 ÷ 16 + 1). Loose remainder is priced at the per-clip rate ($1.20 each).
Trex Signature/Transcend rail posts go every 6 ft. One post-cap LED per post, plus end caps. One step light per stair riser. One 100W transformer per project, plus 1.5× perimeter in low-voltage wiring.
RainEscape is full-deck — joist tape on every joist, collector troughs between joists, downspout to grade. Materials $3.50/sqft, installed $6.80/sqft. Recommended only above 96″ deck height for proper vertical drop.
Trex installs are 25% slower than face-screwed PT. Diagonal adds 12%, picture-frame 18%. Region uses RSMeans 2026-Q1 multipliers — Northeast 1.22, West 1.28, Midwest 1.00, South 0.92.
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