Yellowish-brown oil for birch bark treatment of indoor wood surfaces.

The birch glaze is ready to use. It is applied on top of the glaze base (see Glaze base) and patterned with a wallpaper brush, for example, to form a striped pattern known as long straw. Or you can print a crumpled newspaper on the glaze surface to create masur birch. A third variation is to imitate flame birch with a birchbark brush. Scrub birch and flame birch are usually displaced, softened, with a displacer, but “long straw” is usually displaced.

If you want an even darker glaze, for example to draw details such as grain patterns and the like, you can add more linseed oil paint, such as unfired umber, to darken the birch glaze.

If you want to achieve a stronger surface than the birch bark itself provides, you can apply a layer of uncolored oil on top, or varnish it with linseed oil varnish, as was done in the past.

The surface in the latter case is much shinier than if you use laser oil.