lasur

Lasur is a translucent coating used on wood to provide protection while preserving the natural appearance of the grain. It forms a thin film that allows the texture and color variations of the wood to remain visible, unlike opaque paints. Lasur is commonly applied on exterior and interior timber, including siding, fences, doors, and furniture.

Most lasurs are based on oil, water, or hybrid systems. Oil-based lasures penetrate the wood and form a film with pigment particles that supply color and UV protection. Water-based lasures dry quickly, tend to have lower odor and fewer volatile organic compounds, and are easier to clean. Pigments determine the tint, ranging from clear to various hues, and additives may enhance water repellency, mildew resistance, or UV stability.

Application and performance depend on proper surface preparation. This includes cleaning, sanding, and removing old coatings. Lasur can be applied with a brush, roller, or cloth, often in several coats to achieve the desired depth. The resulting film is translucent and relatively thin, offering modest durability and lower abrasion resistance than opaque paints. Exterior lasurs typically require maintenance and re-application every few years, influenced by climate, exposure, and substrate condition; interior lasurs may last longer between re-coats.

Maintenance considerations include re-coating before noticeable peeling or fading, and ensuring compatibility with primers, sealers, or previous finishes. Environmental aspects such as VOC content and drying times vary by formulation, and disposal guidelines follow local regulations for solvent- or water-based products.