Being durable, stable and relatively knot free, Brimstone ash is an ideal choice for modern timber cladding designs and it is sourced from local woodlands.
Contemporary / modern
All machined profiles
Brimstone ash Cladding from Vastern Timber
Brimstone ash has a consistent chocolate brown colouring with a strong grain pattern. Cladding boards may contain occasional small sound knots.
The modification process removes most natural extractives resulting in relatively consistent weathering, largely free of staining. Weathering to a grey colour occurs more quickly than for non-modified timber
Desired service life
Occasionally wet 60 yrs. Frequently wet 30 yrs.
Resistance to impact
Thermally modified woods are more brittle than untreated wood. Care should be taken when cutting and nailing to prevent chipping and break out. Pre-drilling is advised.
563 Kg / M3
The modification process involves no chemicals and most natural chemicals in the wood are removed during the process. Thermally modified wood can be treated as inert.
How to fix
Hand nail with stainless steel nails through the face or through the tongue on suitable profiles.
Alternatively use a second fix nail gun and insert two nails per batten at opposing angles. For more information, visit the resource centre
Treated softwood. 35mm thick x 50mm wide
400 – 600mm
Stainless steel only. 50mm ring shank nails for hand nailing or 50mm second fix brad nails if using a gun. Trim head stainless steel screws are also suitable.
When to fix
Year round. Very stable in all conditions.
Resistance to fixing
High. Modified wood is brittle and should be treated with care.
We machine timber cladding to the profile of your choice. View our full range of cladding profiles.
We recommend the following profiles for Brimstone ash.
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.