Wood preservatives

Common wood preservatives are PCP (pentachlorophenol), Lindan and DDT (Dichlorodiphenyltrichloroethane). Due to their water solubility and low biodegradability these insecticides possess all the properties necessary for application, vaporisation or impregnation of whole construction parts. These substances are primarily found in roof trusses and load-bearing structural elements made of wood.

Due to their high toxicity these substances are harmful not only for insects but also for mammals. The adverse health effects for humans range from headaches, allergies, eczemas and skin irritations to cancer and the severe damage or even destruction of the human nervous system. 
In Germany the production, use and placing on the market of all substances is prohibited.

The intake of PCP, DDT and Lindan takes place primarily via the mucous membranes and the skin. Therefore clearance operations are to be carried out with full protection only. The areas to be cleared have to be sealed off and a release of the dust is to be prevented.

Due to the classification of these substances as *hazardous waste* the disposal of contaminated wood has to be made via the agency for hazardous wastes “Sonderabfallbehörde Berlin Brandenburg” (SBB) and accounted for in detail via the electronic waste-records procedure (ENV).

Wood containing hazardous substances is classified as category A IV.

Possible waste code numbers (AVV no.) are:

07 02 04*Glass, synthetics and wood contaminated by or containing hazardous substances.