Termite Resistant Timbers
|In-Ground and Above Ground1||Above Ground Only|
|grey box||spotted gum|
|forest red gum||red mahogany|
|ironbark (all species)||white stringybark|
1) The sapwood of these species is to be treated to ‘H5’ level for in-ground use, ‘H3’ level for
weather exposed above ground use
2) The heartwood of these softwoods is to be limited 20% of the cross-sectional area in all weather
3) The heartwood of slash and Caribbean pine is considered termite resistant.
Further protection is by treating the soil surrounding the post, or bedding the post in a material which termites avoid.
An application of Termidor provides 8 years of soil treatment.