Pokost

Drying, linseed oil - a product obtained by flaxseed oil thickening with the addition of drying agents (so called siccatives), used as a impregnation agent for wood, plasters and other porous materials, to protect them from moisture and atmospheric agents. Pure lotion is sometimes diluted, mainly balsamic turpentine, to facilitate penetration into the hardwood. It is a product of natural origin.

"Blend" is also common, but not very proper, name of colorless varnishes based on oils, natural or synthetic resins and mixtures thereof.

Originally, the word "varnish" meant any varnish or impregnate with water-repellency, but since the nineteenth century so-called pure linseed oil, thickened by long cooking with lead salt; It was used as a universal impregnation in shipbuilding, carpentry and carpentry, as well as as a primer for oil paints. It was falsified by the addition of rosin, asphalt and mineral oils. From the mid-nineteenth century, specialized impregnants and varnishes, with the addition of fungicides, slow-drying oils and fats (eg whale)

Today, pure natural varnish is mainly used for "ecological" floor maintenance (so-called oiling) and furniture, as well as renovation of historic buildings and the manufacture of replicas of old furniture or boats. Its particular feature is the poor co-operation with modern materials, including epoxy and polyurethane resins, which forces the consistent use of traditional technologies and materials throughout the manufacturing process.

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