External wood cladding

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With timber facades being seen as a more sustainable option than their traditional brick counterparts, more and more housebuilders are opting to choose external timber cladding for their home. As a result of the growing popularity of timber cladding, it is important that builders have the necessary knowledge of the properties of some of the more common species used for cladding.

This Choose and Use sheet details all of the key considerations faced when specifying timber species for external cladding including each timber species' properties, ease of installation, weather resistance and overall robustness.

The sheet also covers the development of heat treated and modified woods such as Thermowood® Plato® wood, Accoya® and Kebony® which have introduced an entirely new range of softwood products that can achieve greater durability without the use of preservatives.


  • Choosing external cladding
  • Choosing materials for the right finish
  • Direction of boarding
  • Remember the cavity
  • Using battens
  • Board sizes
  • Board lengths
  • Fixing external cladding
  • Detailing
  • Corner details
  • Treatment against fire
  • Maintenance and durability

Suggested Reading

Upgrading timber joinery doors for fire resistancenavigation-arrow

This Wood Information Sheet gives guidance on assessing the suitability of existing doors for upgrading to give a 20 or 30 minutes' fire resistance comparable with that of purpose-made fire doors. Upgrading to 60 minutes' performance will rarely be possible.


Upgrading the fire resistance of existing doors is a...

09/01/2020 |  Wood Information Sheet  

Fire-resisting doorsets: A builder's guidenavigation-arrow

Fire-resisting doorsets, as distinct from single 'fire door' leaves, are precisely designed and engineered component sets required to perform three main functions:

- To protect escape routes from the effects of fire (including smoke) so occupants can leave safely (includes lofts and conversions)

- To protect the contents and/or structure...

01/01/2013 |  Magazine Article  

Limiting fire and smoke spreadnavigation-arrow

BM TRADA Product Assessor Simon Bailey highlights the importance of understanding fire and smoke control within buildings.

Article from the TRADA Timber Industry Yearbook 2015

01/01/2015 |  Magazine Article