Family run UK TImber Merchant since 1990
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Family Business since 1990
Customer Advice from Experts
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Avon Timber Merchants is now closed for the festive holidays until our return on Friday, 2nd January 2026, reopening at 8:00 AM.

 

All orders placed on our website will be processed and delivered as soon as possible after our return in January 2026.

The quoting system remains available to use, however, it will not be monitored during the closure. Requests will be reviewed and processed promptly upon our return.

We would like to take this opportunity to wish all our customers a very Merry Christmas and a Happy New Year. Thank you for your continued support.

Warm regards,
The Website Administration Team

Avon Timber Merchants – Stock Take

Please note that we will be closed on Friday 29th May 2026.
We will be open as normal on Saturday 30th May 2026.

Warm regards,
The Website Administration Team

Thermowood

Thermowood Cladding

Thermowood (A Redwood type of timber that has been thermally modified) is one of the most durable and beautiful timbers you can use for external cladding. With a lifespan of around 30 years, Thermowood cladding is a great long-term option for people looking to improve the appearance of their home. Thermowood external cladding comes with numerous benefits. It is an easy to install, non-toxic, eco-friendly product, resistant to decay. For more details, get in touch with Avon Timber today.

Why Choose Thermowood Timber Cladding?

  • • Exceptional Durability: Thermowood Timber Cladding undergoes structural changes through a unique heat treatment process, enhancing its resistance to decay, insects, and harsh weather conditions. This ensures that your cladding maintains its structural integrity and aesthetics for decades to come.

  • • Environmental Friendliness: By opting to clad your walls with Thermowood, you're making an eco-conscious choice. The heat treatment process is chemical-free, making it a sustainable alternative to traditional timber cladding options.

  • • Enhanced Aesthetics: With its rich colour tones and distinctive grain patterns, Thermowood Timber Cladding adds a touch of elegance and sophistication to any architectural design. Whether you're aiming for a modern or rustic look, Thermowood effortlessly complements various styles.

  • • Easy Maintenance: Unlike other cladding materials that require frequent upkeep, Thermowood Timber Cladding is low-maintenance. Its natural resistance to rot means you can spend less time on maintenance and more time enjoying your home.

8 Products

Thermowood Cladding FAQs
Is thermowood exterior cladding an environmentally friendly redwood timber?

Yes, our thermowood cladding is considered environmentally friendly because it is made from sustainably sourced redwood and the thermal modification process typically uses only high temperatures and steam to change the physical properties of the wood, avoiding the need for chemicals.

What is thermowood shiplap cladding and tongue and grooved matching?

Tongue and grooved matching cladding offers a seamless and contemporary look, while shiplap cladding provides a traditional and rustic aesthetic.

The choice between the two only really depends on the desired style, functionality, and architectural context of the project.

How does thermowood cladding compare to traditional wood cladding in terms of maintenance?

Thermowood cladding requires less maintenance compared to other, more traditional, wood cladding. Its thermal modification process increases its resistance to decay, moisture, and insect damage, reducing the need for regular treatments or replacements.

Does thermowood cladding expand and contract with changes in temperature and humidity?

While thermowood cladding is a great material that is more stable than untreated wood, it can still expand or experience slight shrinkage when fluctuations in temperature and humidity occur.

With proper installation techniques, including allowing for some movement, and using the right fixings, you can help minimise any potential risks.