Palings are organic because they contain resin and damp. Therefore the paling
contains natural nutrients for the mould. The mould spores beginnings
to establish growth.
When the mould develops on damp patches on the paling's many fissures, which contain damp and dirt that provides the mould with more nutrients, the growth increases and the affections are getting worse.
Remains of mould or spores on the paling enable the mould affections constantly recur. Complete sterilization of the mould and disinfection is necessary to stop all affections. Bensaltenside is guaranteed to gives protection for four year. Often for longer than that.