Wood preservation

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Wood preservation / Dry rot prevention

Wood preservation comprises all measures preventing the destruction of wood or wood constructions. The control must be carried by authorised experts only. Normally a superficial treatment is not enough so that injection methods have to be applied.

Wood preservation

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Material to be used

Please, refer to the list of approved wood preservatives by DIBt (Deutsches Institut für Bautechnik). (This text is a translation of the German version and does not consider local building codes or legal requirements of other country.)


Some aims of wood preservation and dry rot

  • Protection against insect attack and fungal decay
  • Insect control and control of fungal decay
  • Improvement of structural fire protection
  • Increase of resistance against fungus or insect attack
  • Increase of durability
  • Protection against negative influence of water and
  • Protection against dry rot attack (masonry)


  • For wood preservation and dry rot prevention experts authorized according to DIN 68800 should furnish a technical inspection report together with a restoration concept
  • The compatibility of wood preservatives with mortar should be verified by laboratory tests
  • Further recommendations can be taken from WTA data sheets
Holzschutzinjektion mit Einschlagkopf

Advantages and benefits

  • Pressure injection allows optimal distribution in wood and masonry
  • Spray coating and foam coating offer optimal distribution on surfaces and in gaps
  • Standardised injection technique and packer assortment
  • Special packers can be manufactured according to the individual application
  • Injection devices and injection packers are combined with the respective material

Foam method


  • Well-directed material application in one working cycle
  • The material sticks to the building material so that it is allowed to penetrate over a longer time
  • Minimal material loss
  • Can be used for all injection devices
  • Multi-shell masonry or masonry with hollows and voids
  • Active substances are applied on surfaces of wood and masonry
DESOI Schaumverfahren
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