Lankkuja

Lankkuja is the plural form of lankku, a Finnish noun that denotes a wooden board or plank. In carpentry and construction, lankkuja are flat, rectangular pieces sawn from logs and used as structural elements, surfacing materials, or general supports. They come in a wide range of sizes and can be used both indoors and outdoors, depending on their species and treatment.

Common materials for lankkuja include softwoods such as pine (mänty) and spruce (kuusi), as well as hardwoods like birch (koivu) and oak (tammi). Engineered variants, such as laminated veneer lumber, are also marketed as lankkuja and are valued for dimensional stability and uniformity. Thickness, width, and length vary according to application, and quality is indicated by grading systems that reflect straightness, knots, and surface conditions.

Processing for lankkuja involves sawing, planing, and drying. They may be air-dried or kiln-dried to reduce warping and shrinkage. Exterior lankkuja are often treated with preservatives or offered in pressure-treated forms to improve durability against moisture and decay.

Applications range from structural framing and flooring to wall and ceiling coverings, furniture, crates, pallets, and various DIY projects. In residential and commercial construction, lankkuja provide the basic material for both load-bearing and finish surfaces, while in crafts they are used for shelves, benches, and decorative elements.

Sustainability is a consideration in the lumber trade, and many lankkuja come from forests managed under certification schemes that promote responsible harvesting and reforestation.