Charred Timber Panels
Charred Timber PanelsMedium Charred Ash Web2


Medium Charred Ash panels are made of natural ash wood. Ash wood has a similar density and grain to oak. In fact, it’s often used as a replacement for oak and is sometimes called “golden oak.” Like oak, cherry and maple wood, ash is considered a hardwood.

When cut into panels, treated then charred, these panels offer stylish, trendy & handmade wall panels that will fit in with most exterior & interior design projects. They give out real ambience with an attractive appearance.


‘Contact Us’ with the SQM of your project, panel dimensions needed and a delivery postcode.  We will then contact you back with a full costing including delivery lead time.

Product Description


We would like to introduce to you our charred timber panels for exterior and interior design projects. For centuries the Japanese perfected the art of charring/burning wood in order to make the external timber used on their buildings resistant to fire, rot, insects and the UV effects from the sun. The process of charring/burning the outer surface brings out the richness of the different wood species grain structure. Also varying the intensity of the burning process produces different finishes.

Before charring the resins, sugars and tannin’s that are normally present in timbers have been removed so by applying the additional process of charring/burning the surface, the result is a much-improved charred surface. This reduces the risks of the timber igniting when exposed to sparks or flames. If the surface is chipped or damaged it does not expose the natural parts of the timber that may lead to surface peel or potential decay and minimal on-going maintenance is required.  These days the primary use for charred timber is for aesthetics and improved performance in exterior applications.


After almost 18 months of experimenting and testing the treatment and charring process, the manufacturer has taken a labour-intensive process and introduced this ThermoWood Charred Cladding Collection.  Use our charred timber panels to bring a rustic charm yet modern aesthetic to your external and internal spaces.

Please note that the charring/burning process is not an exact science and there will be slight surface burn variations throughout the board length which adds to the unique charring/burning characteristics of each board and species. ThermoWood is 30% more fire resistant than regular wood.  Species currently available are our charred Thermowood Pine Softwood & Thermowood Ash Hardwood. Other species will come online soon once fully tested.


Material: Natural Ash Hardwood

Panel Dimensions & Cost:

T 20mm x W 40mm @ £3.96 + VAT per LM.

T 20mm x W 90mm @ £8.90 + VAT per LM.

T 20mm x W 115mm @ £10.67 + VAT per LM.

T 20mm x W 130mm @ £12.32 + VAT per LM.

T 20mm x W 150mm @ £13.88 + VAT per LM.

Standard Panel Lengths Available: 1m, 1.2m, 1.5m, 1.8m, 2.1m, 2.4m, 2.7m, 3m, 3.3m, 3.6m.  (If you need bespoke lengths then we can cut to size for an additional charge of £2.50 + VAT per panel. Max length is 3.6m).

Corner Trims:  Available in 8x40x50mm at desired lengths.  Charred to match the planking.

Choice Of Profile: Edge, Zizza or Side Grooved if you need to use hidden fixings.

Charred Wood

Charred Wood





Coverage: UK & Export. Pallet delivery fee quotes for all areas of the UK, Europe and International destinations are available on request.  (We will need to know if you have forklift offload on site or is a craned offload needed).

Delivery lead time for all deliveries is dependent on quantity ordered.  Please ‘contact us’ for a full costing and delivery lead time.

Installation Guidance:

Finishing Brad Nails:

Because the Thermowood Cladding is stable and does not cup or twist you can use Stainless Steel Finishing brad nail/pins and depending on the profile you choose, these can be fixed into the profile at an angle of 45 degrees. If you are unsure of the holding strength of a 50mm pin, a bead of flexible silicone can be applied to the batten prior to fixing each cladding board. This will give you a clean appearance to the surface of your timber cladding as they virtually disappear.

Face Fixings:

Standard practise has always been to screw or nail through the face of the cladding which is unsightly and can split the timber. If you wish to do so simply pre-drill stainless screws through the face of the board into the sub-frame to avoid damaging the boards.

Board Spacing:

This will be created regardless of the profile you choose to go with. Do not ram the boards together tightly when fixing so that you allow for any minor movements that can occur with the changes in UK climate. Allowing approximately 1mm will be enough for most circumstances.

Cladding Batten Spacing:

We recommend 400mm centre to centre joist spacing for a standard area, projects may vary.

End Grain Sealer:

When the timber starts to dry out it loses the moisture quicker through the ends of the timber hence the characteristics of grain checking and opening. A clear wax sealer seals the timber ends and slows down the moisture loss to a more controlled process, thus preventing this cracking. This is especially useful because cutting off the damaged ends not only becomes an expensive waste of timber but may mean the difference between having the right length of timber for your project or it being several centimetres too short.