A silicate paint for wood - is that it?

Silicate paints form a very special category in the large range of modern paints. Because they solidify in a special way, they only last on mineral substrates - surfaces made of wood, plastic or paper are therefore completely unsuitable. But there is a loophole that deserves a closer look!

Why does silicate paint not normally keep on wood?

Silicate paint needs a mineral reactant to form solid calcium silicate hydrates. The painter professional calls this process "silicification", whereby the paint enters into a firm connection to the substrate.

This method of drying contributes to the long life of a silicate coating, because the substance becomes one with the underlying plaster, so to speak, it forms no separate layer. The natural silicate paint adheres to these substrates - and not to these:

undergroundSuitable for silicate paint?
Plaster of lime and / or cementYes very good
concreteonly without formwork oil
plasterno, due to damaging interactions
calcareous sandstoneYes very good
fiber cementYes very good
WhitewashingYes very good
emulsion paintno, not mineral
wallpaperno, not mineral
surface painted with backgroundno, too much plastic in the underground

Silicate paint for wood is still available!

Those who do not want to insist on regular silicate paint will still find it thanks to new developments in the paint sector. The company KEIM, as a specialist for this special type of paint, recently launched a product called LIGNOSIL®, which is especially popular in the field of listed buildings.

Among the dispersion silicate paints there could also be products that are quite durable on wood. Acrylic and other organic substances are added to this type of color. This results in a mixed form of emulsion paint and silicate paint.

Dispersion silicate paints with an increased plastic content no longer silicify, but they dry by evaporation of the solvent. Therefore, they can also be used on non-mineral substrates, but they have a film-forming effect and inhibit diffusion.

Tips & Tricks

Wood surfaces can be colored in many ways, for example through stains, oils, waxes, glazes and paints. Maybe this selection does not necessarily have to be a silicate paint!

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