The lacquer primer that keys bare wood, metal and stone.

LEINOS 810 is a primer, not a finish. A plant-oil binder in a dearomatised isoparaffin carrier is pigmented natural-white with titanium dioxide and loaded with chalk and talc. Brushed, rolled or sprayed in one thin, sparing coat onto bare wood, metal or stoneware, it cures by taking up oxygen into a waterproof, elastic film that keys the surface — so the lacquer that follows has something firm to grip.

The white pigment and mineral fillers do the foundation work: titanium dioxide gives opacity and covering power, chalk and talc fill the grain and build a body that sands to a smooth, even key at 24 hours. Because the base reads white, the topcoat colour comes up in fewer coats; for coloured work the primer can be tinted up to 10:1 with the lacquer. It stays water-vapour permeable, so the wood underneath can still breathe.

The chemistry is declared honestly. 810 is biocide-free and the solvent is aromatic-free, but it is a solvent-borne primer — not a toy- or food-safe finish. Clean tools with Verdünnung 200 rather than water, and store oil-soaked rags under water or in a sealed metal tin, because they can self-ignite. On exterior, old or damp-exposed wood, Impregnation Wood Primer 150 goes on first, because 810 and the lacquers carry no fungicide; strongly absorbent wood in dry interior use is deep-primed with Priming Oil 220 instead. Then overcoat with White Lacquer 820, Finishing Lacquer 840 or custom-tinted Mix 845.