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Preservation to ensure optimal wood protection and long-term usability

Wood that is used outdoors needs effective protection against fungi and insects. This is the only way to ensure its durability and cost-effectiveness. We impregnate in industrial plants, using different methods depending on the application. We have decades of experience in using impregnating agents, both from renowned manufacturers and our in-house test plant, according to the latest technology standards.

Marine construction Timber for special applications

Special procedures are needed in harbors and quays, or in inland and coastal protection. Wood preservation salts and impregnation methods must be adapted to the specific environmental conditions. We can thus provide effective protection, also against naval shipworm (Teredo navalis), and guarantee long service life of our timbers.

Fürstenberg impregnation at a glance:

  • Impregnation plants on an industrial scale
  • Annual impregnation capacity approx. 60,000 m3
  • Use of impregnating agents from renowned manufacturers and development partnerships (our own test facility)
  • Continuous wood moisture measurement to ensure that the timber is dry
  • In timbers that are difficult to impregnate, the ground/air zone is perforated beforehand
  • Types of timber preservation:
    • Salt impregnation using vacuum pressure for dry wood (moisture content 25 - 35%)
    • Salt impregnation using alternating pressure for moist wood (moisture content 80 - 100%)
    • Coal tar at the foot of the pole using a tripod method
    • Fürstenberg-Permadur®System for extra protection of the ground/air zone
    • Preservation using impregnating oils according to the European regulations
    • Development and impregnation with new wood preservatives