Brimstone® Sycamore Cladding
Sourced from local woodlands and transformed with intense heat, Brimstone sycamore cladding delivers superior performance for exterior timber cladding projects. Brimstone sycamore is a very stable and durable hardwood with a low knot content, making it an attractive and reliable choice for external wall cladding on contemporary properties.
Style
Contemporary / modern
Profiles
All machined profiles
Source
British woodlands
Beware
Brittleness
Brimstone® Sycamore Cladding
Brimstone® Sycamore Cladding
Brimstone® Sycamore Cladding
Brimstone® Sycamore Cladding Features
Durable and stable, this timber cladding offers functionality while still being visually appealing. The silky grain and natural ripple commonly found in sycamore trees are enhanced by the thermal modification process, creating a striking finish.
The durability and rich brown colouring of thermally modified sycamore make it a strong alternative to imported cedar and tropical hardwoods for both indoor and outdoor wood cladding. All Brimstone® hardwoods are sourced exclusively from Britain, supporting the local woodland economy. Sycamore is fast-growing, renewable, responsibly harvested, and Grown in Britain certified.
The thermal modification process is entirely chemical-free. By superheating the timber to over 200°C, the structure of the wood is reconfigured to make it stable, durable, and resistant to pests and decay. As a result, Brimstone sycamore cladding is certified to perform outdoors for over 30 years.
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Brimstone sycamore cladding specification
Brimstone Sycamore Cladding from Vastern Timber
- Species: Thermally modified British sycamore
- Source: Legal and well-managed woodlands in England and Wales
- Grade: BS1186-3 Class 1 / EN942:2007 J10
- Finished thickness: 20mm
- Widths: 70mm / 95mm / 120mm / 145mm
- Lengths: Random 1.5m – 3.0m+
- Profiles: Available in various profiles
- Moisture content: 4-6%
- Durability: EN350-2 Very Durable, Class 1 (above ground use only)
- Finish: Supplied uncoated, no treatment required
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Characteristics of Brimstone sycamore
Appearance
Consistent brown colouring with a silky grain. May include occasional small, sound knots.
Weathering
With most natural extractives removed during the thermal modification process, the timber weathers evenly and is less prone to staining. The colour will fade to grey more quickly than untreated species. Surface mould may appear on south-facing elevations but can be neutralised with standard treatments or white wine vinegar.
Desired service life
Up to 60 years in occasionally wet weather conditions and 30 years in frequently wet conditions.
Movement class
Small.
Resistance to impact
Medium.
Working properties
Thermally modified timber is more brittle than untreated wood. Care is required when cutting or nailing to avoid chipping. Pre-drilling is recommended.
Density
550 Kg / M3
Extractives
No chemicals are used in the modification process, and most natural extractives are removed, leaving the timber inert.
Installation of Brimstone sycamore boards
How to fix Brimstone sycamore cladding
Pre-drill and fix boards with stainless steel nails or trim head screws through the face or through the tongue of suitable profiles.
Alternatively use a second fix nail gun and insert two 16 gauge brad nails, suitable for external use, per batten at opposing angles.
Always pilot drill fixings and countersink screw heads.
Create a 2mm expansion gap between following boards.
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Recommended battens for Brimstone cladding
Profiled Thermowood or treated softwood battens are recommended for use behind Brimstone sycamore cladding.
The minimum thickness of primary battens should be 40mm. Horizontal battens to have an angled top face to shed water.
Find out more about our Thermowood batten system
Batten spacing for external timber cladding
400 – 500mm
Fixings for Brimstone sycamore cladding
Only use stainless steel fixings for external cladding.
For fixing Brimstone sycamore cladding we recommend 50mm ring shank nails or trim head screws for face fixing and 40mm for hidden fixing through the tongue.
If using a nail gun to fix your cladding boards select 50mm 16 gauge brad nails, suitable for external use.
When to fix Brimstone sycamore cladding
Brimstone sycamore is very stable and can be installed year round.
Resistance to fixing
Low. Brimstone sycamore is brittle and should be treated with care.
Brimstone sycamore cladding profiles
We machine timber cladding to the profile of your choice. Recommended profiles for Brimstone sycamore:
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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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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