Composite Decking on Long Island

For a typical 300 sq ft deck, pricing ranges depending on the composite line and railing system. We give a written quote after a site visit — no generic square-footage guess. Trex Enhance sits at the lower end, TimberTech AZEK and premium railings at the higher end.

Both carry identical 25-year warranties and both perform beautifully on Long Island. Trex has the wider color palette and a stronger Pro Platinum contractor network. TimberTech AZEK is 100% PVC, so it's a touch lighter and slightly better for homes right on the water. We install both — we match the brand to the yard.

Dark composite boards absorb heat like any dark surface. If barefoot comfort in July is a priority, we recommend lighter colors (Foggy Wharf, Rocky Harbor, Coastline) or premium PVC options like TimberTech AZEK Vintage English Walnut — they run 5–10° cooler than entry-level composite.

300 sq ft typically: 2–3 days demo, 3–5 days framing and footings, 3–4 days decking and railings, 1 day final walk-through. Total 10–14 working days. Permits through Nassau municipalities take 8–14 days; Suffolk runs 10–18.

Yes — in every Nassau and Suffolk municipality, attached decks over 30 in. off grade require a building permit. We pull every permit ourselves — it's included in the quote and never an add-on.

We build composite decks in every Nassau and Suffolk town. Our busiest markets include Massapequa (11758), Wantagh (11793), Levittown (11756), Merrick (11566), Bethpage (11714), Farmingdale (11735), Hicksville (11801), and Garden City (11530) in Nassau County, plus Huntington (11743), Smithtown (11787), Commack (11725), Bay Shore (11706), Islip (11751), Northport (11768), Babylon (11702), and Dix Hills (11746) in Suffolk County. Our shop is in Wantagh — every town on the Island is within 45 minutes.

A 400 sq ft Trex Transcend composite deck on Long Island typically runs $22,000–$32,000 fully installed in 2026, including demolition of the old deck, new frost-depth footings, pressure-treated framing, hidden fasteners, aluminum railings, and all permits. Trex Enhance (the value line) drops to $18,000–$26,000 for the same footprint. TimberTech AZEK runs $25,000–$35,000. These are all-in prices — no add-ons after the quote.

Yes — Huntington (11743, 11746) and Smithtown (11787) are two of our busiest Suffolk County markets. Huntington's proximity to Cold Spring Harbor means salt-air exposure is a factor — we recommend TimberTech AZEK or light-color Trex Transcend for homes within a mile of the harbor. Smithtown's Town Building Department typically processes deck permits in 10–14 business days. We handle the full permit process in both towns.

For homes within a half-mile of the Long Island Sound, Great South Bay, or Atlantic Ocean, TimberTech AZEK Vintage Collection (100% PVC) is the top pick. It absorbs zero moisture, resists salt corrosion on fasteners, and handles the 30–50 freeze-thaw cycles Long Island gets each winter. For homes farther inland — Commack, Dix Hills, Farmingdale, Bethpage — Trex Transcend (capped composite) performs equally well at a lower price point.

Composite decking costs roughly 40–60% more upfront than pressure-treated on Long Island ($18,000–$35,000 vs $12,000–$20,000 for a 300 sq ft deck), but the 25-year lifecycle cost is lower because composite requires zero staining, sealing, or sanding. Pressure-treated needs annual cleaning and sealing every 2–3 years — that adds $400–$800 per maintenance cycle. Over 20 years, the total cost of ownership is comparable, and composite retains higher resale value.