Timber preservatives

Some preservative treatments impart colour to sapwood. This tends to reduce contrast between sapwood and heartwood in timbers having dark or brownish heartwood colours.

For feature applications where the owner or specifier does not desire this sapwood shading, they should specify that either:

  • the timber is to be free from sapwood on the face or
  • that immunisation by a colourless preservative is required.


Last modified
05/22/2017 - 00:37