Wood veneer is real timber sliced from a log into sheets roughly 0.5 to 3 mm thick and pressed onto a carrier panel of MDF or plywood. How the log is cut sets the figure: tangential slicing gives wide cathedral grain, radial slicing gives straight parallel lines. No two sheets from the same tree repeat, which is both the appeal and the complication of veneer on a production door.
Species and surface
Walnut, oak, beech, ash and sapele are the species seen most often on steel door faces. Walnut reads dark with strong contrast, oak lighter and open-pored, beech almost plain. The choice affects more than colour: harder species resist scratching better in high-traffic entrances.
Veneer thickness and carrier
With thin veneer, any unevenness in the carrier panel shows through the finish. Moisture resistance of that carrier decides whether the door survives a damp stairwell. Panels are press-bonded to the steel leaf and the edges closed with banding or a solid timber lipping. A door whose edges are closed with film alone will tire at the handle-side corner within a couple of years.
Topcoat options
Lacquer forms a film that keeps water and stains out but is hard to repair locally. Oil-wax leaves the grain open and gives a tactile surface, at the cost of periodic renewal. Pigmented lacquer covers the grain entirely, so a semi-transparent build is needed if you want the figure visible. For any opening exposed to daylight, a UV-filtered topcoat is not optional; without it the tone shifts within one summer.
Movement is normal
Wood takes up and releases moisture, so it swells and shrinks. Pressed onto a steel leaf that movement is largely restrained but never eliminated. On a south-facing entrance taking direct rain, hairline cracking or lifting near the edges can appear. That is material behaviour, not a manufacturing fault, which is why veneer belongs under a canopy, in shaded entrances or on the internal face.
Wood-look alternatives
Buyers who want the look without the exposure risk have three routes. PVC membrane printed with wood grain offers the widest pattern range and ignores humidity, though it does not feel like timber. High-pressure laminate panels hold up markedly better against sun and rain, which is the family our ultralam steel doors belong to. Composite panels give weight and hardness close to solid wood and are the usual specification for exposed entrances; the composite door range includes equivalents of most timber tones.
Maintenance and repair
Clean with a soft damp cloth and very little water. Alcohol, acetone and ammonia-based cleaners dull the lacquer; neutral pH soapy water handles heavier soiling. Wipe along the grain so fine scratches stay hidden. Wax repair sticks deal with small dents, and deeper damage can be sanded back and re-lacquered in that area only. That repairability is veneer's clearest advantage over membrane and laminate, which have to be replaced panel by panel.
Ordering for export
Tell us the exposure of each opening before we quote, because that decides the finish family. Veneered leaves travel in moisture-barrier wrap with corner protection and ship from Istanbul by road or container; send the wall openings in centimetres, the hand of each door and the exposure, and we will price to your sizes.
