Brimstone Ash Decking
Durable, stable and relatively knot free, Brimstone ash decking is a locally grown alternative to tropical hardwood decking. It offers strong performance for external use while retaining a refined and consistent appearance.
Type
Hardwood
Profiles
VDEC 1 – 3
From
South of England
Brimstone Ash Decking
Brimstone Ash Decking
Brimstone Ash Decking
Brimstone Ash Decking
Brimstone Ash Decking Features
We previously supplied tropical hardwood decking due to its visual appeal, hardness and durability, despite the lack of a locally grown equivalent. Brimstone ash decking now provides a British-grown alternative with comparable performance characteristics.
Brimstone ash is produced using thermal modification, a process that involves superheating English ash to 210 degrees. This treatment stabilises the wood, improves durability and transforms the timber into a deep chocolate brown colour. The result is Brimstone ash timber that performs well in external decking applications.
Thermally modified ash has been used for decking in the United States for many years and has become increasingly common across mainland Europe. Brimstone ash is the first British-grown product of its kind, offering a locally sourced option for timber decking.
For those considering tropical hardwood decking species such as Ipe, Yellow Balau or Garapa, Brimstone Ash offers similar performance while supporting local woodlands and avoiding the sustainability concerns associated with tropical timber.
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Specification
Brimstone ash decking from Vastern Timber
- Thermally modified British ash
- Sourced from legal and well-managed woodlands in England and Wales
- EN942:2007 J10
- Finished thickness of 21mm
- Overall finished widths of 95mm, 120mm, or 140mm
- Random lengths 1.5m to 3.0m+
- Available in various profiles
- Moisture content of 4 to 6 percent
- Durability EN350-2 Very Durable. Class 1 (Above-ground use only)
- Supplied uncoated. Decking oil recommended
Profiles
Dimensions
| Dimensions |
|
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| Lengths |
1.5mt – 3.0mt+ |
Characteristics
Appearance
Brimstone ash timber displays a consistent chocolate brown colour with a pronounced grain pattern. Decking boards may contain occasional small, sound knots.
Weathering
The thermal modification process removes most natural extractives, resulting in relatively consistent weathering that is largely free of staining. Weathering to a grey colour occurs more quickly than with non-modified timber.
Durability (EN350-2)
Very durable. Class 1
Desired service life
Frequently wet conditions: 30 years. This is heavily reliant on good design and installation. Realistic service life as decking is more likely to be 15 to 20 years.
Movement class
Small
Working properties
Brimstone is more brittle than untreated wood. Care should be taken when cutting and fixing to avoid splitting. Pre-drilling and countersinking are essential.
Density
563 Kg / m3
Extractives
The thermal modification process involves no chemicals and removes most naturally occurring chemicals from the wood. Brimstone ash decking can be treated as inert.
Disclaimer
While the utmost care has been taken to provide accurate information, Vastern Timber shall not be held responsible for any consequences arising from any errors or omissions on this website nor for any damages resulting from the use of the information.
FAQs
What is Brimstone ash decking?
How is Brimstone ash timber modified?
Is Brimstone ash suitable for outdoor timber decking?
Does Brimstone ash decking contain knots?
How does Brimstone ash decking weather over time?
Disclaimer
While the utmost care has been taken to provide accurate information, Vastern Timber shall not be held responsible for any consequences arising from any errors or omissions on this website nor for any damages resulting from the use of the information.
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