Demidekk Ultimate Täckfärg (formerly known as Jotun Optimal) is a waterborne, silk gloss stain for outdoor use that accentuates the wood structure. The coating is low-maintenance for 12 years and very durable. It offers protection against weather influences and UV, and can be applied over existing coats of paint. Aside from wood, the stain can also be applied to stone-like surfaces.

The stain can be used for wood-rich façade elements, like tongue-and-groove board, frame structures, and dormers. It is available in many colours.

The coating has the Nordic Ecolabel Nordic Swan.