• Darryn Webb

Treating Chemical Delignification

Chemical Delignification Specialists are the leaders in treating chemical delignification in Perth. We have a unique ltreatment method we will explain onsite with you after inspection.


In the past, this type of timber damage has been referred to using many different terms, Hairy Timber or Defibrosis.In the early 1990's it was agreed that the true description of this type of timber deterioration is Chemical Delignification.

This term describes the deterioration in its true form, the lignin in timber is damaged by airborne chemicals.

Lignin is the natural glue that holds the fibres of wood together and is, therefore, a major component of any wood. When the lignin is broken down or damaged the fibres then detach from each other creating a visible hairy surface to a section of the timber, as the delignification progresses the structure of the timber section is weakened and therefore Chemical Delignification is regarded as a structural pest of timber in service.

Chemical Delignification damage is most commonly found in timber sections used as roof tile battens of buildings that are located in close proximity to the sea, large chemical factories or major arterial roads that have heavy traffic.

Buildings close to the sea are exposed to salts brought to land by wind and sea breezes and dwellings within five kilometres of the sea are often found to have chemical delignification in their roof tile battens.