Application processes

For the treatment of wood with anti-sapstain preservatives such as Wolsin FL or Sinesto, there are a range of different processes.

Dipping

The dipping process involves the wood being completely submerged in a tank of preservative solution. Results for preservative retention depend on dipping times and solution concentration, and are also influenced by wood types and moisture levels.

Spray treatment

Application of preservatives to timbers to protect against sapstain and mould using spray treatment is carried out exclusively in stationary plants. Spray tunnels enable the preservative to be applied evenly and economically with very little wastage.

Brushing

The cost and time required for brushing means this process is only used in special cases, such as for the treatment of large constructional components (e.g. structural laminated timber) or the remedial treatment of cross cut ends.
To achieve the required retention levels, several coats are usually necessary.

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