Timber
H3 treated American Oak – an exterior solution designed for the Australian climate
There’s nothing like the warmth and beauty of timber. It’s natural, sustainable and durable which is why we’ve created IronOak, America’s favourite hardwood designed for external use.
IronOak is the perfect choice for those after a blonde, select grade and crown-cut exterior hardwood. The unmatched style and quality of our IronOak means that it is capable of uplifting any façade, all while withstanding the diverse local climate.
Treated to H3 classification (per AS1604 Specification for Preservative Treatment), IronOak is handpicked by region and colour, graded and processed to exceed Australian standards and supplied in small, manageable packs.
Designed to match our internal Glacial Oak (American Oak) range, IronOak is vastly available in a variety of cladding and batten profiles.
| Colour | Blonde to light brown |
| Grain | Straight open and even grained and coarse textured |
| Density | Medium density 730 KG/m3 |
| F-rating* | F14 |
| GL-rating* | GL13 |
| Janka | 6.0 kN |
| Stability | High (back sawn) |
| *Structural ratings apply only to ASH products as specified. Certain manufacturing processes, applications or grades may reduce strength. Refer to ASH application pages for specific details. |
| Cutting | Very Good |
| Bending | Medium bending strength |
| Glueing | Very Good |
| Lyctus Susceptible | No |
| Nail holding | Very Good |
| Durability | Very durable – H3 treated as per AS1604 |
| Fire | Refer to Australian Standard AS1530 Part 3 and Building Code of Australia – Smoke development index: 3 – Flooring AS/ISO 9239.1 – Critical Radiant Heat Flux: 3.7 – Smoke development Rate: Less than 750% -min – Wall and Ceiling lining AS/NZS3837: 1998 – Average extinction area: less than 250m2/kg – Material Group No: 3 (unless coated to meet Group 1 & 2) – Bushfire Attack level: BAL-19 High (BAL-29 and BAL-40 in proprietary systems) |
Calculate the sequestered CO2 equivalent of your project and the time it takes to regrow the timber.
Sustainability
Glacial Oak, ASH’s brand of American Oak uses PEFC Controlled source material to ensure the best practices are met in terms of sustainability.
Glacial Oak is selectively harvested and takes 0.57 seconds to grow 1m3.
IronOak is ASH’s Glacial Oak timber with the addition of a durable H3 water-based treatment making it ideal for exterior applications. Designed to match our internal Glacial Oak range, meaning you can achieve consistency and flow of design from inside to out. IronOak is available in a variety of cladding, batten and screening profiles and comes with a 25-year warranty.
We’ll provide an uncoated sample giving you a true appreciation for the natural timber which can easily be stained or painted on site (the H3 treatment does not affect the colour of the timber).
Yes, IronOak is our Glacial Oak (American Oak) that’s been treated to H3 classification. IronOak can be used in above-ground applications like cladding, screening and pergolas.
IronOak external profiles are designed to match our Glacial Oak (American Oak) range allowing you to create a continuous flow of design from inside to out.
Yes, IronOak is treated using Tru-Core and has a warranty of up to 25 years for decay and insect attack.
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