Silicate Paint

• Silicate mineral paints - https://en.wikipedia.org/wiki/Silicate_mineral_paint
• German manufacturer discussses 3 generations of this paint - [1]

Designing the Paint

• How sodium silicate has been used in wood prervation from prior art of a recent patent - [2]

Sourcing

• Sodium silicate - $200/ton - [3]
• But wikipedia says that Minaral Silicate Paint uses potassium silicate. -[4]

Buying

• https://www.keim.com/en-de/products/wood-coating/