THE SELDER METHOD FOR DEEP IMPREGNATING WOOD WITH SELDER OIL IN AN AUTOCLAVE

Mikkel Selder has developed the Selder method for deep impregnation of wood with Selder oil in an autoclave by varying the pressure and temperature.

With the Selder method, the absorption of oil can be precisely controlled and both sapwood and heartwood of all types of wood can be impregnated in such a way that practically all of the oil impregnates the cell walls and practically none remains in the cell cavities.
We have even impregnated whitewood of large dimensions to the core.

Sample of sapwood of pine impregnated according to the Selder method, which was in soil and in the soil band for 23 years, from 1994 to 2017 in the test field in Simlångsdalen, Sweden of the Swedish University of Agricultural Sciences.

The Selder method can only be used with Selder oil and only this oil offers protection against rot because it:

  • Consists to 100% of unsaturated, i. e., drying (oxidizing) fatty acids of linseed oil and is free of all other components of linseed oil, i. e., those that do not dry or that prevent drying.
  • Withstands the high temperatures in the autoclave.
  • Is water repellent and non-biodegradable, i. e., cannot be used as food by animals, fungi or microbes.

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Selder & Company is focused on the manufacture and sale of oils and linseed oil paints and licenses the Selder method to trusted enterprises.

Ecotimber AB in Ransta, Sweden is currently licensed for the Selder method.