Species Data
All timber species sawn by Radial Timber for external applications and requiring natural durability are selected from regrowth Eucalyptus species ranging in durability from Class 1 to 2. When possible, Radial Timber sources plantation grown species with our aim to be self sufficient off our own supply once viable. Contact our office for up to date species currently in stock.
Silvertop Ash (Eucalyptus Sieberi)
About
Silvertop Ash, or ‘coast ash’ as it is commonly referred to due to it’s tendency to grow along the eastern coast, is a distinctive timber with many features including noticeable growth rings, gum veins and pencil streaks. It’s these features which make it great for visual applications.
Origins
Silvertop Ash grows in southern and central coast of New South Wales, eastern Victoria and north-eastern Tasmania.
Colours
The colour variation in Silvertop varies from pale to medium brown and often has a light amount of feature which can give a recycled timber look.
| Species | E. Sieberi |
|---|---|
| Common Name | Silvertop Ash |
| Density – Dry | 820kg/m3 |
| Density – Green | 1030kg/m3 |
| Strength Group | S4 SD3 |
| % Shrinkage-Radial | 6.0 |
| % Shrinkage-Tangential | 10.1 |
| MOE – Dry | 17 |
| MPA – Green | 10 |
| MOR – Dry | 136 |
| MPA – Green | 69 |
| Hardness – Dry | 9.5 |
| Hardness – Green | 7.2 |
| Durability Class(above ground) | 2 |
| Durability Class(in ground) | 3 |
| Lyctus Bore | Non-Susceptible |
| Av.External Life(above ground) | 15 – 25 years |
Fire Data
Australia has long had devastating bushfires, thats why its important your timber meets the required ratings. There are also certain fire requirements for internal or external applications on particular dwellings. These fire properties must be considered in the design faze.
