The Altberg Factory
In this video the Altberg bootmaker discusses the different ways in which nubuck can be treated to either continue its breathability or to enhance its water repellency.
ONCE TREATED WITH LEDER-GRIS THE CHANGE TO THE NUBUCK FINISH IS IRREVERSIBLE
Altbergs Nubuck leathger is made form the same European hides as their water repellent full grain leather.
The only difference is the way the tannery finish the surface of the leather.
Nubuck is sanded and brushed on the surface to increase breathability.
Full grain leather has a smooth finish on which a thin coating has been applied.
Clean any mud or dust off boots - boots should be dry.
Use a rubberised brush to remove any marks.
Use a brass bristle brush to raise the nubuck finish.
Spray boots with Leder-Bok especially the seams and areas of upper which flex. Leder-Bok will lubricate seams and increase protection against failure caused by abrasion during wear.
NOTE - All leather/nubuck will eventually harden and crack - especially in areas where the upper flexes during use. Regular use of Leder-Bok or Leder-Gris will extend the time before which this flex cracking will occur.
Apply Leder-Gris with small putting on brush to all seams.
Always work Leder-Gris into the stitching behind the heel tab - using small brush.
Use small putting on brush to work Leder-Gris into the areas of the upper which flex during use.
Use the large brush to buff and drive the Leder-Gris into the surface of the nubuck - this will change the appearance of the nubuck to a more shiny - water repellent finish - this change is irreversible.
As boots get wet, then dry out, the leather/nubuck will eventually harden and crack - in the areas of the upper which flex in use. Regular use of Leder-Gris will extend the time before which flex-cracking will occur.