Composite vs PVC Decking Calculator

On technical specs — yes. PVC outperforms composite on lifespan (+10-15 yrs), heat retention (~6-15°F cooler), weight (25-30% lighter), and mold immunity (100% vs 70-90%). PVC also gets longer warranties (30-50 yr fade/stain vs 25-35 yr composite). On price + aesthetics — composite wins. Premium composite (Trex Transcend) at $8.95/lf has 13 colors with deep multi-tone grain; equivalent PVC (AZEK Vintage) is $9.50/lf for 7 colors. Composite captures more recycled content. Total premium for PVC over premium composite: typically $1,000-2,500 on a 200-300 sqft deck.

Yes, but less than composite. PVC mid-tier (AZEK Vintage) hits ~99°F at 90°F ambient direct sun, vs premium composite (Trex Transcend) ~106°F. Difference: 7°F — noticeable barefoot but not dramatic. The bigger heat factor is color: dark Spiced Rum or Coastline (either class) adds 6-10°F. For barefoot pool decks, pick PVC + a light color (Sand Dune, Coastline) — you'll get 12-18°F lower surface temp than dark composite.

PVC: 35-45 years (AZEK Vintage 40, Advanced PVC Vintage 45, premium PVC 42). Composite: 25-32 years (Trex Enhance 25, Trex Transcend 30, Trex Signature polymer 40). The lifespan gap reflects organic-vs-inorganic durability — composite's wood-fiber core eventually breaks down even with a cap. PVC has no organic content, so lifespan is limited only by UV degradation (slow with modern stabilizers) + physical wear. Real-world: 30-yr-old AZEK decks are still in service; 25-yr-old composite decks typically show cap micro-abrasion + occasional cap-failure spots.

PVC, decisively. Pool decks face constant chlorinated splashback + humidity + sometimes saltwater. Composite's wood-fiber core absorbs moisture if cap is damaged (which happens over years — micro-scratches from chair drags, dropped tools). Once the core gets wet repeatedly, mold + early rot. PVC has zero organic content — splashes evaporate, no substrate for mold. AZEK Vintage or Landmark in a light color (Coastline, Sand Dune) is the pool-deck gold standard. Trex Signature (mineral-polymer, not true composite) also works. Avoid traditional composite for pool decks unless budget forces it.

Composite has higher recycled content (80-95% vs PVC 50-55%) — Trex famously processes 95% recycled wood/plastic, capturing reclaimed wood waste + post-consumer plastic film. PVC is ~55% recycled vinyl scrap. Lifecycle analysis: PVC's longer lifespan (35-45 vs 25-32 yrs) reduces total disposal volume over a homeowner's lifetime — partially offsetting lower recycled-content per board. For LEED/sustainability projects: composite scores higher on Materials category; PVC scores higher on Durability. Both far less environmentally impactful than virgin tropical hardwood.

Composite, at every tier. Entry composite (~$3.75/lf) vs entry PVC (~$8.25/lf) — composite 55% cheaper on boards. Mid: $6.25 vs $10.00, composite 38% cheaper. Premium: $9.25 vs $12.25, composite 24% cheaper. The gap narrows as you go up because premium composite (Trex Signature) is mineral-reinforced polymer that approaches PVC in cost. Total installed delta on a 200 sqft deck: $400-1,800 in PVC's favor at retail. PVC's 25-yr TCO catches up sometimes (lower cleaning) but rarely flips the math.

Technically yes, aesthetically risky. Both classes use identical PT substructure, identical hidden fasteners (5mm clip systems are interchangeable), and identical 5.5″ standard board widths. You could trim PVC fascia with composite field boards. But the cap textures + colors don't match exactly between classes — composite tends to have deeper grain texture, PVC slightly smoother. Mixed-class installs look almost-but-not-quite-aligned, which homeowners regret. If you want PVC's performance for a high-traffic zone (stairs, pool surround) and composite for the main field, set a deliberate transition (different color, picture-frame border) so it reads as intentional design.

No — both use proprietary hidden-fastener clip systems that work on any grooved-edge board, regardless of cap class. Trex Universal Hidden Fasteners, TimberTech CONCEALoc, Fiberon Phantom — any clip system works on either composite or PVC grooved boards. For face-screwed installs (non-grooved boards), use composite/PVC-rated stainless or coated screws (Camo Edge, TigerClaw HF-Composite) — same screw works for both classes. PT substructure beneath is identical — 2×8 or 2×10 joists at 12-16″ o.c. depending on board orientation.

Yes if any of: (1) Pool/coastal/humid environment — PVC's mold immunity is non-negotiable here, the $1,500 premium pays back in lifespan + zero remediation. (2) You're staying in the home 20+ years — PVC's 35-45 yr lifespan crosses your ownership horizon while composite needs replacement. (3) Midday-sun deck with heavy barefoot use — PVC's 6-15°F lower surface temp matters daily. (4) You want the longest fade/stain warranty available (Advanced PVC Vintage 50-yr). No if: budget is tight, deck is shaded/north-facing, you'd accept replacement in 25 years, or you want the broadest color palette (premium composite still leads at 12-13 colors).