Composite Decking Lead Time from China: A Stage-by-Stage Breakdown

If you are planning a decking project and sourcing from China, the number you need is not the production time your supplier quotes. It is the door-to-door figure, and the gap between the two is where most schedules fall apart.

This guide breaks the full lead time into its five stages, gives realistic ranges for each, and — more usefully — points out the four places where delays actually originate.

The short answer

For a standard stock profile in a standard colour, expect 35 to 60 days from order confirmation to delivery at your warehouse. Custom colours, new profiles or peak-season bookings push that towards 70 days or more.

Stage	Typical duration	Who controls it
Order confirmation, deposit and specification lock	2–5 days	You
Production	15–25 days	Factory
Inland haulage, export customs, port loading	3–7 days	Factory / forwarder
Ocean freight	15–40 days	Carrier
Import clearance and inland delivery	5–12 days	Your broker

Notice that production is rarely the longest stage, and it is almost never the reason a shipment is late. Freight and paperwork are.

1. Order confirmation: 2–5 days, and it is your stage to lose

This stage is short on paper and expensive in practice. Delays here come from specification ambiguity: profile dimensions, colour code, surface finish, embossing pattern, board length, joist spacing assumptions, and whether accessories (clips, end caps, fascia boards, pedestals) are included in the same order.

Every one of those items that gets confirmed after production starts costs you days, because the factory will not interrupt a running extrusion for a clarification. Lock the full bill of materials — including accessories — before you pay the deposit.

2. Production: 15–25 days

A composite decking run is not a single operation. The typical sequence:

1. Compounding and raw material preparation — 1–2 days. Wood fibre, HDPE or PP, coupling agents, colour masterbatch and stabilisers are blended to a fixed formulation.
2. Extrusion — 7–12 days depending on order volume. Co-extruded (capped) boards run slower than uncapped ones because a second polymer layer is applied in the same pass.
3. Surface finishing — embossing, brushing or sanding, if the profile has a wood-grain texture.
4. Conditioning — boards rest so internal stresses from extrusion can relax. Cutting too early can produce boards that continue to move slightly after installation.
5. Cutting to length, end treatment and packing — 2–3 days.

Add time for two common cases:

• Custom colour — add 5–10 days for a lab dip and your approval before bulk production.
• New profile or new tooling — add 10–15 days. A new extrusion die has to be made and trialled.

If you are still deciding between capped and uncapped, that choice affects both lead time and long-term performance — we cover the trade-offs in our comparison of capped versus uncapped WPC decking.

3. Inland haulage and port loading: 3–7 days

Trucking from the factory to the port, export declaration, container stuffing and gate-in. This is normally smooth, and when it is not, the cause is almost always one of three things:

• Booking gap — the vessel is full and your container is rolled to the next sailing. Peak season can add 7–14 days this way.
• Document mismatch — the packing list, invoice and booking note do not agree on weight, piece count or consignee.
• Wood packaging compliance — any wooden pallets or crates must meet ISPM 15 and carry the mark. Australia and New Zealand enforce this strictly, and a non-compliant pallet can hold a container at destination far longer than it took to ship.

4. Ocean freight: the biggest variable, 15–40 days

These are indicative port-to-port transit times for a full container load. Transhipment, congestion and weather are not included.

Origin	Destination	Transit (days)
Shanghai / Ningbo	Sydney, Melbourne, Brisbane	16–24
Shenzhen / Guangzhou	Los Angeles / Long Beach	15–22
Shanghai	New York / Savannah (US East Coast)	28–38
Ningbo	Rotterdam / Hamburg	30–40
Qingdao	Dubai / Jebel Ali	16–24
Shenzhen	Singapore / Port Klang	5–10

Two points that catch importers out. First, a cheap direct-looking rate often hides a transhipment, and each transhipment can add a week. Ask for the routing, not just the transit time. Second, LCL (less than container load) is not simply a smaller FCL — consolidation and deconsolidation typically add 7–14 days at one or both ends.

5. Import clearance and inland delivery: 5–12 days

Your broker’s stage. The most common delays here are classification related — WPC products can be assessed as plastic articles or as wood-based articles depending on composition and market practice, and the duty consequence is real. Confirm the classification with your broker before shipment rather than after arrival.

Where delays actually start

1. Seasonal capacity squeeze. Chinese export capacity tightens twice a year: the northern-hemisphere pre-season build (roughly March to May) and the pre-holiday push (roughly September to November). Book production slots early in these windows.
2. Chinese New Year. For planning purposes, Chinese New Year 2027 falls on 6 February. Factories wind down for two to three weeks around it, and the month before is the most congested of the year. Orders confirmed by early December will not be affected; orders confirmed in mid-January almost certainly will.
3. Incomplete accessory orders. Clips, screws, end caps and pedestals are frequently forgotten and then shipped separately, arriving after the boards. Air freight for a forgotten box of clips costs more than the clips.
4. Specification drift mid-order. A colour or length change requested after extrusion starts usually means a partial restart, not an adjustment.

How to compress the schedule

• Choose stock profiles and stock colours where the design allows. This is the single biggest lever, worth 10–15 days.
• Book the vessel when you book production, not when goods are ready.
• Ship boards and accessories together in one container — and if you are combining decking with wall panels or cladding, a mixed container saves both freight cost and a second clearance cycle.
• Approve samples and lab dips early, in parallel with contract negotiation rather than after it.
• Avoid the last two weeks before Chinese New Year for anything time-critical.

Questions worth asking your supplier

• Is my profile and colour in stock production, or does it require a new colour match or tooling?
• What is the production slot you are quoting — is it booked, or is it an estimate?
• Is the quoted transit time direct or via transhipment?
• Are accessories included in the same container, or shipped separately?
• Can you share the production schedule once the deposit clears, with a stuffing date?
• What happens if the vessel is rolled — who absorbs the demurrage and storage?

Frequently asked questions

Planning a decking order with a fixed installation date? Send us your profile, quantity and destination port and we will give you a stage-by-stage schedule with named dates, not a range. Request a quotation.