Resurface or rebuild,
costed.

Resurface if your frame (joists / beams / posts / footings / ledger) is structurally sound and has 13+ years of life remaining. Rebuild if ANY of: joists show rot, beams sag, posts have cracks or movement, ledger flashing has failed, or footings have settled. Rebuilding now might be cheaper over a 25-yr horizon if your frame is 15+ years old — the calculator's TCO panel surfaces this crossover. Cost vs Value 2024: resurface recoups 78% at sale, rebuild 52% — but you can't resurface a failing frame and pass inspection.

Usually yes IF the frame is sound, but verify joist spacing. Composite typically requires joists at 16″ OC max (some premium lines allow 12″ OC at 45° angle install). PT framers built 30+ years ago may have used 24″ OC joists for PT 5/4×6 boards — composite cannot span 24″ OC. Inspect joist spacing before buying composite. Also: composite is ~50-100% heavier than PT decking, so verify your beams + footings handle the extra load (IRC R507.5 + R507.3 — use the Beam Span + Footing calculators on this site to confirm).

Usually NO for like-for-like board replacement (same material class on existing frame). But YES if you (1) change the deck footprint, (2) raise/lower deck height, (3) replace structural framing members, (4) change railing height, or (5) add stairs. When in doubt, call your building department — a 5-minute call can save a $500 stop-work order. Some HOA / coastal / historic-district jurisdictions require permits even for like-for-like resurface.

Mid-tier composite (Trex Select, TimberTech Edge Prime+, Fiberon Sanctuary) is the #1 choice in 2026 — 30-yr warranty, 8-15 colors, ~$12.50/sqft installed for boards + hidden clips. Second most popular: entry composite (Trex Enhance) at ~$9.50/sqft — 25-yr warranty, slightly fewer colors. PVC (AZEK) is the premium choice at ~$14.50/sqft — 50-yr warranty + cooler-touch tech. PT lumber is the budget choice at ~$4.50/sqft but needs re-stain every 2 yrs.

300 sqft composite resurface, contractor crew: 2-3 days (1 day demo + 1-2 days install). DIY: 4-7 weekends (32-50 hrs). IPE adds 40% time due to pre-drill every screw. Hidden-clip composite is 20% faster install than face-screw. Add 1 day for railing replacement. Add 0.5 day for stair tread replacement per section. Most homeowners can use the deck again within 2-3 days of contractor start.

Yes — $0.85/sqft additional ($272 on a 320 sqft deck). But the install is 20% faster (recessed clip vs visible screw) so labor savings offset ~$0.50/sqft. Net premium: ~$0.35-0.40/sqft installed. The aesthetic value is significant — buyers expect hidden fasteners on premium composite. Plug systems ($0.45/sqft) are a middle option — visible screw with color-matched plug pressed over the head. Plug systems work on PT, cedar, IPE (any non-grooved board).

For a 300 sqft mid composite deck: resurface 25-yr TCO ≈ $14K + (frame-rebuild forced at year 13 if frame is 10-15 yrs today) ≈ $24K total. Rebuild 25-yr TCO ≈ $19K (fresh frame, no forced re-rebuild). The crossover happens because resurfacing on an aging frame forces a SECOND project within the 25-yr horizon — at which point you've spent both the resurface dollars AND the rebuild dollars. If your frame is < 10 yrs old, resurface wins on 25-yr TCO. If 15+ yrs old, rebuild wins. Calculator does the math.

Yes — but verify it passes code. IRC R301.5 requires 200-lb concentrated load at the top rail. IRC R312.1.2 requires 36″+ height. IRC R312.1.3 requires 4″ sphere baluster rule. Old wood railing 15+ years often fails the 200-lb test (rotted post bases or loose ledger bolts). Inspect every post connection + tug-test the rail before keeping. If existing railing posts are notched onto the deck (DCA-6 banned method), they MUST be replaced. Composite-on-PT-railing is a common mismatch — many homeowners regret keeping the old PT railing.

Yes — Cost vs Value 2024 ranks it #2 for ROI behind garage-door replacement. Resurfacing recoups 78% at sale within 1-2 yrs of project. Full deck rebuild recoups 52%. The premium for resurface ROI is that buyers value a refreshed-looking deck MORE than they value the structural age of the framing underneath. Pro tip: pair resurface with a stain/seal on remaining wood + a power-wash on the house siding adjacent to the deck — boosts curb appeal disproportionately.