When converting roofs in old buildings, there is a risk of wood preservatives being contaminated by toxic paints, which are now banned. These highly contaminated wood preservatives were not only used in the roof area and for the exterior. They are not only used in the rooms for which they were intended, but also indoors to paint beams, wooden floors, wooden panels or cladding. They are particularly dangerous to the health of the occupants as they can continue to emit pollutants for decades.
Lindane
Wood preservatives with PCP and lindane
Wood preservatives containing the hazardous substances PCP and lindane were mainly used in the 1960s and 1970s to protect roof beams and even wooden toys. These are highly volatile pollutants (SVOCs) that can continue to outgas indoors for decades and accumulate in house dust, causing health problems and even cancer.