Brimstone Timber Cladding

Introducing our innovative thermally modified hardwood cladding

REQUEST A QUOTE

Buying Brimstone Cladding

Brimstone® is thermally modified British hardwood cladding designed for external use. The timber is sourced from woodlands across Britain and heated to 210°C in a controlled process that improves durability and dimensional stability without chemical treatment.

The result is a stable, long-lasting hardwood cladding with a relatively knot-free, clean appearance. Brimstone® offers a British-grown alternative to imported timber cladding, supporting local woodlands and UK supply chains.

Google Reviews

Jonathan A.

I've purchased various products from Vastern including cladding, character boards, planned timber and huge oak slabs. Everyone is extremely helpful and professional, especially Wolf who's helped me out many times to find exactly the timber I needed. They always have a large range of character boards in stock and the quality of timber is always exceptional.

Mark N.

I've bought Vastern Timber's modified Brimstone Ash for three different parts of a single project on my house (cladding, roof terrace decking and fence/gate structure) and the results have been stunning. Not only is the timber of the highest quality and looks great, but the attention to detail and helpfulness of the Vastern staff - from placing and adjusting the order to carefully poositioining the load onto my vehicles - has been second to none.

ashley B.

If you're a carpenter, you'll love this place. Great selection of oak planks, mouldings, various lengths and sizes. Amazing choices of whole tree rough edged planks, various sizes and types, oak, elm, etc. Lot's more too, cladding, oils, the list goes on. Competitive prices, friendly helpful service 👍

Miriam T.

We are based in Kent and we re-clad our house in Brimstone poplar. The product is beautiful and it was one of the best decisions we made in our renovation process. Stefan and the team have been very helpful with information and advice both before and after the sale. Thank you!

Stephen P.

I'm an amateur and wanted to clad my daughter's ugly extension. Vastern's prices were excellent but it was their service that was outstanding. They spent time helping us choose what we wanted. When we scrimped too hard and ordered short, they were quick to help us out. And a final request for two soffit boards was met with equal kindness. These people are terrific, I recommend them.

Daniel S.

Waney edge larch clad 4x4 shed for £500. Half the price of everyone else. Great customer service on the phone. Fast delivery.

Alexander J.

Ordered larch cladding for the exterior of our house, to add a bit of character to a few areas. Vastern very very helpful in the process and my many questions of what will work well. Definately recommend.

Jim C.

These guys are the best company to deal with and excellent products. Stefan is incredibly helpful and knowledgable/ accommodating and I would recommend them profusely. Building a Hempcrete eco lodge in the Forest of Dean using green oak and cladding from Vastern. We always use them for their quality and service.

William M.

Great experience dealing with Vastern Timber. Great quality British products (we ordered the Brimstone cladding) and very responsive answering all my questions etc. Very helpful delivery driver also!

Kierstan L.

We have just installed Brimstone poplar cladding on our new extension and are absolutely delighted with it. It's a beautiful finish, full of character and interest. We're already enjoying watching it change gradually as it seasons. We are so pleased we chose Vastern - a local, independent supplier with a strong emphasis on sustainability and locally grown timber and responsibly managed woodland. Right from our first visit, and the brilliant display boards in the car park showing cladding as it matures in all different aspects (ie North facing, South facing etc) and the beautiful showroom, we knew we had found something special. The team have been hugely helpful in outlining options, explaining technical aspects and advising on choices and the customer service has been excellent.

Hugo P.

Excellent service, advice and products. They supplied 1700 linear meters of Siberian Larch Grade A rainscreen cladding. Great quality product which looks fantastic now it is installed.

Karen S.

We ordered English Cedar to clad the outside of our bungalow. Initially we weren't sure what we needed, but Stefan was very helpful and knowledgeable and guided us through the whole process. He answered any queries and made it quick and easy to place our order. We were told how long it would take and our ordered was delivered very promptly once it had been milled. The product delivered is of a very high standard and we are extremely pleased. We cannot fault Vastern and would definitely recommend them. Many thanks to Stefan, the delivery driver (who was brilliant) and the whole team.

Julie M.

No wonder Vastern has so many great reviews. From start to finish they were friendly, helpful, knowledgable and so professional.

I’m building a shed from scratch with minimal DIY experience and cladding it with Larch waney edge shiplap. They’ve helped me through every stage and nothing was to much bother for them.

All the staff are a credit to the business but I have to say that Stefan was exceptional with his customer care throughout the purchasing.

I collected my order and of arrival I was greeted by Andy aka Wolf. What a guy, great customer care, incredible with his forklift skills and a very professional well mannered and a fun character.

As I needed to adjust my payment, I went in to the office, fully masked up of course. There I spoke to Dee who kindly refunded me the difference. Again her and her colleague were very polite and professional but with great personality.

Although Vastern Timber is a 2 hour drive for me, the level of service, the quality of the product, the knowledge provided and the very reasonable pricing all make it very worth it...and there’s also the bonus of dealing with an amazing team whilst you’re there.

Top job Vastern, it was an absolute pleasure!!!

Anthony S.

Stefan made the whole process of purchasing Cedar cladding really easy.
We are delighted with the quality of the timber and polite friendly service.
Highly recommend this company.

Russell H.

Great product and service. I ordered some siberian larch cladding for our build and am delighted with the end result. Would recommend these guys for anyone looking for quality timber cladding

Joe H.

I have just taken delivery of some cladding from Vastern, this is the 3rd time I’ve used them and have been really impressed each time. The service, price and quality of timber is all excellent. Wolf the delivery driver was really helpful, friendly and professional. I’d highly recommend them.

David S.

Vastern provided excellent pre-sales advice and delivered our timber cladding as promised. Their prices were competitive and all the staff were polite and helpful from sales through to delivery.

Paul S.

From the very start of my waney edge cladding project Dee at Vastern provided invaluable advice and guidance. First class customer service and quality timber I would highly recommend Vastern Timber for any size job you might want to undertake.

Jason H.

Great service from Vastern Timber. Great product and second to none customer service from delivery diamond ‘Wolf’. He helped offload and carry the timber down the garden and couldn’t have been more helpful if he’d tried. Top job. Also the product they do called ‘Brimstone’, is brilliant and a great use of poplar. Check out their website for how they process the product but it’s a good story.

j H.

Really helpful, willing to offer help and advice. Delivery staff are also great, friendly, notify you of when to expect them and help with unloading on site.

The wood cladding we have used is brilliant, looks really smart and our carpenter was impressed with the quality.

Oliver W.

Timber is always of good quality, they always beat their lead times and all their staff are very helpful. Especially delivery driver 'Mr Wolf' who went above and beyond, helping to bring all our cladding around the back of the property, certainly way further than the curb!

Mark R.

The Canadian Red Cedar that Vastern supplied has helped CRD Bath, our builder, to create a spectacular house. We have used it for cladding the first floor and the soffits of all of the overhangs. Vastern planed the timber to uniform profiles throughout and the quality of the workmanship on site has resulted in a superb job. It is pleasing to see the timber already beginning to weather uniformly.

Janine P.

Fantastic service and delivery today. Excellent quality cladding and would recommend very highly.

gary Y.

Excellent service from Vastern Timber, Andy dealt with my initial request & passed it on to Dee who recommended & provided a price quickly for some planed cedar for cladding, within a couple of days Andy was back with delivery of some really nice timber, very pleased.

Claire M.

Just got some Siberian Larch Grade A and B delivered today in 140mm and 95mm for decking and wall cladding. Andy was extremely helpful with the delivery and had great knowledge of the product. Dee was also very helpful when ordering. Her job would be made easier though if there was a more efficient way for the customer to measure up the lengths required. It took me a while to get my head around measurements and I had to rely on Dee to confirm the lengths. Maybe some clever software could help there, which would relieve the pressure off Dee to have to confirm all the measurements. Just a thought. Thank you.

Download our simple guide to help you choose your timber cladding

DOWNLOAD GUIDE

Brimstone® Cladding Features

The timber is thermally modified at over 210°C in a controlled, toxin-free process. Heating alters the cell structure of the wood, reducing moisture content and improving dimensional stability without chemical treatment. The result is hardwood cladding that is resistant to decay and less prone to movement, warping, or distortion.

Brimstone® is produced from fast-growing British hardwoods, supporting active woodland regeneration and local supply chains. It is available in a range of widths and machined profiles across three main species:

Brimstone Ash Cladding

Strong-grained and the hardest of the Brimstone options.

Brimstone Poplar Cladding

Extremely lightweight with a silky appearance.

Brimstone Sycamore Cladding

Silky in texture and relatively hard.

Call us to discuss your cladding project

01793853281

CALL US

Find Out More

CASE STUDY

Brimstone® ash selected for new build celebrating award-winning design and exceptional craftsmanship

CASE STUDY

Orchard Lodge: A Blend of Design, Sustainability & Innovation

RESOURCE CENTRE

Introducing Brimstone, the British grown, thermally-modified timber cladding.

Performance

Brimstone® thermally modified hardwood achieves durability class 1 for above-ground use, making it suitable for long-term external cladding applications. When installed correctly with appropriate detailing and ventilation, it has an expected service life of 30 years or more.

Thermal modification improves dimensional stability by reducing the timber’s equilibrium moisture content. As a result, Brimstone® cladding shows significantly less shrinkage and expansion than untreated hardwood, reducing the risk of cupping, splitting, and distortion.

The modification process also transforms non-durable British hardwoods into durable, stable cladding without chemical treatment.

Brimstone® has a consistent walnut-brown colour when supplied. Like all external timber, it will weather to a silver-grey if left untreated. Surface coatings can slow this process but are not required for durability.

Thermally modified timber is more brittle than untreated hardwood. Care should be taken during machining and installation. Once fixed in place, this does not affect in-service performance.

Download our simple guide to help you choose your timber cladding

DOWNLOAD GUIDE

Brimstone®
Cladding Profiles

Brimstone® thermally modified hardwood is best suited to machined timber cladding profiles that create clean lines and defined shadow gaps.

Popular options include:

Halflap cladding profiles such as VHL4 and VHL6
Tongue and groove cladding including hidden-fix systems such as VTG5A and VTG6

Thanks to its improved dimensional stability, Brimstone® performs reliably in both open-jointed and interlocking cladding systems.

Boards are typically supplied at 20mm thickness and are available in widths of 70mm, 95mm, 120mm, and 145mm.

View our full range of timber cladding profiles

Call us to discuss your cladding project

01793853281

CALL US

How to Fix and Install Brimstone® Cladding

Brimstone® thermally modified hardwood cladding can be installed vertically or horizontally, depending on the chosen profile.

Vertical timber cladding requires a double batten system to allow ventilation and drainage.
Horizontal cladding typically requires a single batten system.

Only stainless steel fixings should be used with hardwood cladding to prevent staining and corrosion.

Because thermally modified timber is more brittle than untreated wood, careful fixing is essential:

Pre-drill all boards if hand-nailing.
Countersink pilot holes when using screws.
Do not use first-fix nail guns, as larger nails may split the boards.
Second-fix nail guns may be used, fixing two nails at opposing angles.
Leave an expansion gap of at least 2mm between boards.

Thanks to its dimensional stability, Brimstone® can be installed at any time of year, provided standard cladding ventilation and detailing principles are followed.

We can supply the appropriate stainless steel fixings with your order.

Brimstone Cladding price lists

SEE PRICES

Not sure if Brimstone is for you? Have a look at our other timber cladding options.

Know what you want?

REQUEST A QUOTE

FAQs on Brimstone cladding

What is Brimstone®?

What durability class is Brimstone®?

What species are available in the Brimstone range?

How long does Brimstone® cladding last?

Does Brimstone® require treatment?

Does Brimstone cladding weather over time?

Is Brimstone® suitable for vertical cladding?

Why is Brimstone more stable than other cladding?

Is Brimstone timber cladding brittle?

What profiles are available for Brimstone?

How should Brimstone timber cladding be fixed?

When can Brimstone wood cladding be installed?

How does Brimstone® compare to imported cedar or larch?

Does thermally modified timber move?

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.

Brimstone Timber Cladding

Introducing our innovative thermally modified hardwood cladding

Buying Brimstone Cladding

Brimstone® is thermally modified British hardwood cladding designed for external use. The timber is sourced from woodlands across Britain and heated to 210°C in a controlled process that improves durability and dimensional stability without chemical treatment.

The result is a stable, long-lasting hardwood cladding with a relatively knot-free, clean appearance. Brimstone® offers a British-grown alternative to imported timber cladding, supporting local woodlands and UK supply chains.

Google Reviews

Download our simple guide to help you choose your timber cladding

Brimstone® Cladding Features

Brimstone Ash Cladding

Brimstone Poplar Cladding

Brimstone Sycamore Cladding

Call us to discuss your cladding project

Find Out More

Brimstone® ash selected for new build celebrating award-winning design and exceptional craftsmanship

Orchard Lodge: A Blend of Design, Sustainability & Innovation

Introducing Brimstone, the British grown, thermally-modified timber cladding.

Performance

Download our simple guide to help you choose your timber cladding

Brimstone® Cladding Profiles

Call us to discuss your cladding project

How to Fix and Install Brimstone® Cladding

Brimstone Cladding price lists

Not sure if Brimstone is for you? Have a look at our other timber cladding options.

Know what you want?

FAQs on Brimstone cladding

What is Brimstone®?

What durability class is Brimstone®?

What species are available in the Brimstone range?

How long does Brimstone® cladding last?

Does Brimstone® require treatment?

Does Brimstone cladding weather over time?

Is Brimstone® suitable for vertical cladding?

Why is Brimstone more stable than other cladding?

Is Brimstone timber cladding brittle?

What profiles are available for Brimstone?

How should Brimstone timber cladding be fixed?

When can Brimstone wood cladding be installed?

How does Brimstone® compare to imported cedar or larch?

Does thermally modified timber move?

Disclaimer

Contact Form

Download Guide

Request a quote

Send to my email

Send to my email

Send to my email

Send to my email

Send to my email

Contact

Sign up for news about wood, woods and woodland

Sign up for our monthly newsletter of timber news, with inspiring case studies and specially selected stories from the wonderful world of trees and woodlands.

Request a quote

Brimstone®
Cladding Profiles