6.2 External timber framed walls

6.2.11 Timber preservation

Timber and timber products shall either have adequate natural durability or be treated with preservative to provide resistance against fungal decay and insect attack.

The following should have adequate natural durability or be preservative treated in accordance with Chapter 3.3 ‘Timber preservation (natural solid timber)’:

  • timber framing members including studs, rails, sole plates, etc
  • external timber cladding
  • engineered timber I-section or metal-web studs.

Last updated: 2nd January 2024

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