CO-extrusion composite decking(Solid）20*140

Solid-core co-extruded WPC decking board, 20 × 140 mm. A solid section rather than a hollow one: there are no internal chambers, so cut ends read as solid material and the board does not need end caps to look finished. At 20 mm this is the slimmest co-extruded section we run, which is what gets it specified where build-up height is tight but a capped surface is still wanted.

Specification — 20 × 140 mm solid co-extrusion decking

Cross-section	20 × 140 mm
Core	Solid — no hollow chambers
Construction	Co-extruded (capped) wood-plastic composite
Warranty	Generation 2 — 15 years, stepped cover
Colours	Teak, Red wood, Light grey, Grey, Coffee, Chocolate, Charcoal, Cedar
MOQ / production	70 m² — 20 days for standard catalogue items
HS code / origin	3925.90 — Sihui, Zhaoqing, Guangdong, China

Warranty and evidence

Warranty — Generation 2, 15 years, stepped. Cover runs 100% in years 1–3, 80% in year 4, 70% in year 5, 50% in year 6, 40% in year 7, 30% in years 8–9, 20% in years 10–12 and 10% in years 13–15. It starts on delivery and signature at the destination port, not the factory gate, and covers peeling, cracking and overall uneven fading. Excluded: incorrect installation, impact damage, chemical attack and misuse.

Certification: ISO 9001 (IAS25924Q1473R0M) and ISO 14001 (IAS25924E0394R0M), valid to 29 April 2027. CE / CPR certificate M.2024.206.C97619, UDEM International Certification, valid to 11 March 2029. REACH is covered by a manufacturer’s declaration of conformity — a declaration, not third-party certification.

Slip: our ramp test (Intertek Shanghai Fengxian, 230625005SHF-001, AS 4586-2013 Appendix D, 15°, R10) was measured on the 23 × 138 mm profile ZSGJ138H23A, not on this board. We will not quote that R10 against a different section. If your specification needs a slip classification on this profile we can test it at the same laboratory: fee up front, credited in full against the order.

Not yet tested on this profile: DIN 51097 (barefoot wet areas), BS 7976 pendulum PTV, ASTM D7032 / D7031 and ICC-ES. Our documentation route is European (CE/CPR, REACH) and Australian plus Chinese GB/T. If you are selling into a market that names US standards, tell us which ones before you order rather than after installation.

Buying this board

MOQ, lead time and samples. MOQ is 70 m² for decking, measured in square metres rather than full containers. Standard catalogue production runs 20 days, and sea freight to a UK port is about 55 days port to port on top of that, loading at Nansha (Guangzhou) or Yantian (Shenzhen). HS code 3925.90. Samples are free — you cover the courier and we credit it against your first order.

FAQ

What does a solid core actually change? Cut ends show solid material rather than open chambers, so mitres and exposed ends finish without a cap. It is also the reason this board weighs more per metre than a hollow section of the same size.

A note on this page’s web address. The URL reads 23-140, but the product is the 20 × 140 mm section. We have left the address alone so existing links keep working — always order against the 20 × 140 description, not the URL.

Is the 15-year warranty flat? No, it is stepped — see the schedule above.

Can you cut to length? Tell us your run lengths when you enquire and we will confirm what the current production can hold for this profile.

Related reading

Further reading: types of composite decking, backyard composite decking, lightweight decking on adjustable pedestals and composite decking for garden terraces.