Solid Wood vs Engineered Wood vs SPC Flooring: How to Choose in 2026

Since 1983, Liancheng Wood in Nanxun, Zhejiang—the district Chinese forestry authorities recognise as China's wood-flooring capital—has shipped more than 400 forty-foot containers of flooring per year on export orders managed under CE EN 14342, ISO 9001 and FSC C012100 certification. With 43 years of production records across three fundamentally different constructions, our answer to "solid wood, engineered wood or SPC?" is always the same: choose after you quantify the room's humidity, heating system, traffic level and planned service life—not after you compare photos.

This guide is written from actual mill data, not marketing brochures. It compares the three products by measurable attributes: thickness, wear-layer depth, refinishing cycles, moisture response, fire classification, dimensional stability and export price per square metre. If you are an importer, contractor or architect preparing a specification, the numbers below can be lifted directly into a tender document.

Three constructions, three cost-to-risk profiles

Wood flooring is a composite of raw material cost, installation cost and lifecycle cost. A floor that costs USD 5 per square metre to buy can cost more than a USD 30 floor over 30 years if it fails early. Start by understanding what each construction physically is.

Solid wood flooring: one piece of real hardwood, 18–20 mm thick

A solid wood floor is a single continuous piece of hardwood, normally 18 mm (³⁄₄ inch) or 20 mm thick. Because every plank is solid timber, moisture moves through it seasonally: the board expands when relative humidity rises and contracts when it falls. Installation requires acclimatisation on site for five to seven days at 40–60% relative humidity, and kiln-dried moisture content is typically 8–12% at the factory gate.

The advantage is longevity. An 18 mm white oak floor carries roughly 40% of its thickness as usable wear material. A floor refinisher removes about 0.5–1.0 mm per sanding cycle, which means a solid oak floor can be refinished five to eight times over its life. European oak hardness in Janka-type testing sits at roughly 1,120–1,360 lbf (5,000–6,050 N)—hard enough for residential living areas but marked by heels in heavy commercial corridors. Expect service life above 50 years when the room stays between 40% and 60% relative humidity.

The cost risk is also real. Solid flooring is the most sensitive to humidity swings, is unsuitable for direct wet areas, and should not be glued over underfloor heating unless the supplier provides a documented movement-tolerant specification. Our 2026 FOB quotation range for factory-graded select European oak 18 mm solid Tongue & Groove is USD 30–45 per square metre, loaded at Ningbo.

Engineered wood flooring: 2–6 mm hardwood lamella over a cross-ply core

Engineered wood flooring (实木复合地板) bonds a real hardwood lamella to a dimensionally stable plywood or HDF core. The standard export specification is a 14 mm total board with a 2 mm top layer; hotel and residential premium projects frequently specify 15 mm boards with a 4 mm lamella. The structure is cross-ply, meaning each core layer runs perpendicular to the one below it, which is why a 14 mm engineered plank will stay visibly flatter than a solid 18 mm plank in the same room.

Acclimatisation time drops to 48–72 hours, and the boards tolerate surface temperatures up to 27°C, making engineered wood the most common real-wood choice over hydronic heating. The wear budget depends on the lamella: a 2 mm face allows one professional sand-and-recoat, a 4 mm face allows two to three sanding passes, and a 6 mm lamella can be treated much like a thin solid board. Realistic service life is 30–40 years in residential use, and 15–25 years in contract hospitality use with a 2 mm face.

Current Liancheng FOB prices for 14 mm, 2 mm lamella white oak UV-lacquered samples run USD 17–28 per square metre; brushed-and-oiled 15 mm boards with a 4 mm lamella run USD 27–38 per square metre at container volume.

SPC flooring: a limestone–PVC rigid core with a printed wood look

SPC (Stone Plastic Composite, 石塑地板) contains no wood at all in its core. A typical 5.5 mm SPC plank is about 60–75% limestone powder by weight, mixed with PVC and stabilisers into a rigid core with a density near 1.9–2.2 g/cm³, then topped with a printed wood-image film and a transparent polyurethane wear layer of 0.3–0.55 mm (12–22 mil).

The measurable strengths are moisture indifference and geometry. SPC can be submerged without swelling, does not need moisture-content acclimatisation, and holds its dimensions well enough that published expansion values are usually below 0.2% under wet testing. A floating click system with an attached IXPE pad installs without glue, and the boards suit surface temperatures up to 27°C.

The trade-offs are tactile and reparable. There is no real wood to sand; damaged planks are replaced, not refinished. Thinner SPC prints can telegraph subfloor unevenness, and long-term UV exposure will fade prints faster than natural wood patina. Typical residential service life is 15–25 years under the warranty terms offered by established mills. Indicative FOB Ningbo pricing for 5.5 mm, 0.3 mm wear-layer SPC with attached pad is USD 4.80–7.20 per square metre.

Specification comparison table

EN 13501-1 fire classification: what the certificate must say

Fire testing is a separate decision point from price. Under EN 13501-1, wood flooring products are tested to EN ISO 9239-1 and typically achieve class Dfl-s1, meaning acceptable burning behaviour and low smoke production for floor coverings; the flooring industry uses the "fl" suffix for floor-specific classes. SPC is a PVC-based product with a very different combustion profile, so do not assume a class: require the manufacturer's EN 13501-1 test report for the exact SKU and thickness you plan to import.

Liancheng attaches a Declaration of Performance to each CE-marked shipment under EN 14342, and the