Sustainable by nature, guaranteed
durable by technology

Unleash the power of science with our ultra stable thermally modified wood

THERMOWOOD AYOUS - AWARDED 2024 SUSTAINABLE PRODUCT OF THE YEAR BY GREEN BUILDER

We enhance wood naturally with heat, steam, and nothing else

Using only heat and steam, we’ve developed an exclusive method that enhances the natural properties of wood to an unprecedented level. By removing moisture from the wood cells, we’ve created a product that’s not only durable and stable but also beautiful and sustainable, all without the use of any chemicals. Our technology is the result of years of research and development, which we’re proud to say is the finest and most advanced in the market.

Unmatched
Stability

Enhanced
Durability

Easy
Installation

Sustainable
Sourcing

High performance for any interior and exterior application

Thermowood Ash

Thermowood Ash cladding combines the timeless sophistication of real wood with exceptional durability, meticulous milling, and easy installation.

Available Lengths

6- to 16-foot-long boards

Thermowood Ayous

Combining mid-brown tones with exceptional physical properties delivers high performance and excellent durability. Available in light and dark tones.

Available Lengths

6- to 16-foot-long boards

Thermowood Pine

Thermowood enhances the wood’s natural properties, creating a durable product with a warm golden-brown color and characteristic knot pattern.

Available Lengths

6- to 16-foot-long boards

Quality Presentation, Inside and Out

Thermowood® comes in packages, with the quantity of pieces per package determined by their thickness.

Thermowood® 5/4 x 6

Comes in packages
of 5 boards

Thermowood® 1 x 6 Max

Comes in packages
of 6 boards

Thermowood® 1 x 6

Comes in packages
of 7 boards

Thermowood® is available in different length groups and is always sold in random lengths.

Compact

4- to 6-foot-long boards

Medium

7- to 10-foot-long boards

Long

11- to 16-foot-long boards

Interior
Wall Panel Profiles

Customize the combination of the profiles according to your personal preference to give room for more imaginative projects.

Exterior
Wall Panel Profiles

Thermowood is available in a nearly unlimited range of wall and ceiling profiles. If you don’t see what you came looking for, let us know – we can custom-mill anything for your project.

Effortless installation with unparalleled lightweight superiority

Connect with your preferred regional dealer today to learn how Thermowood products can elevate your business offerings.

Case study

Unlocking the full potential of Thermowood

The House at the Top of the Mountain

At an altitude of 6,500 feet, the materials had to be strong enough to withstand the harsh weather conditions, yet lightweight enough to facilitate installation. After extensive testing, they selected Thermowood Ash for its durability, resistance to the elements, and aesthetic appeal. The result is a stunning and functional venue that offered breathtaking views and unforgettable dining experiences.

The 50 Villas

Maximood Architecture had ambitious plans to build 50 beautiful seaside mansions, but they needed a cladding material that was cost-effective and could provide the organic feel they were seeking for. They initially considered teak, but the price proved to be prohibitive. That’s when they discovered Thermowood Ayous Light, a durable and aesthetically appealing alternative that fits their budget.

Premium Lumber asks
for a Premium Brand powered by Novawood

The legitimate Thermowood® products are reserved for our exclusive
Maximo Wood brand, distributed nationwide in the United States by Boise Cascade.

Eco-Certified: Sustainable Excellence

Bring Your Project to Life with Thermowood® crafted by Maximo Wood.

Whether you’re just exploring ideas or ready to build, we’re here to help you take the next step—with standout Thermowood®, expert guidance, and tailored solutions for your vision.

Fill out the form to get started.

Let us know what you're planning and we’ll follow up with product options, pricing, and support to move your project forward.

What is Thermowood?
What is Thermowood and how is it made? +
Thermowood is natural wood that undergoes an innovative thermal modification process using only heat and steam, with no chemical additives. During this process, wood is heated in specialized chambers at controlled temperatures, which removes moisture and natural resins from the wood cells. This exclusive treatment results in a final product with durability, dimensional stability, and moisture resistance significantly superior to conventional wood. The process is completely sustainable, maintaining the natural beauty of the wood while enhancing its physical properties.
What is the difference between Thermowood and chemically treated wood? +
The main difference is the treatment method. While chemically treated wood uses preservatives and fungicides (such as CCA or ACQ) that can be harmful to the environment and health, Thermowood uses only heat and steam. This makes Thermowood a much more eco-friendly and safe option, especially for indoor applications and areas where there is contact with food or children. Additionally, Thermowood maintains the natural aesthetics of wood without chemical discoloration, offering a more premium and authentic appearance.
Is Thermowood really sustainable? +
Yes, absolutely. Thermowood is produced from sustainably sourced and certified wood, and the treatment process is 100% free of harmful chemicals. Thermal modification significantly increases the wood's lifespan, reducing the need for frequent replacements and consequently decreasing environmental impact. Furthermore, our Thermowood Ayous was awarded 2024 Sustainable Product of the Year by Green Builder, recognizing its commitment to sustainability and environmental excellence.
What is the lifespan of Thermowood? +
Thermowood offers exceptional durability with a guaranteed lifespan of 20 years in exterior applications. In interior applications, durability is virtually unlimited, as Thermowood naturally resists insects and fungi. This superior longevity makes Thermowood a smart economic investment in the long term, and it can be used for virtually any application, including decking.
Applications and Products
What applications is Thermowood ideal for? +
Thermowood is versatile and can be used in a wide range of applications, both interior and exterior. The most common applications include: facade cladding, decking for patios and pools, ceiling panels, saunas, accent walls, pergolas, fencing, and even furniture and decorative elements. Its dimensional stability and moisture resistance make it particularly suitable for environments with extreme climate variations. Thermowood Ayous is ideal for walls, while Ash can be used for walls or ceilings. For decking, Ayous is the best choice until the final decision.
What types of Thermowood are available? +
We offer three main types of Thermowood, each with unique characteristics and aesthetics: Thermowood Ash combines timeless sophistication with exceptional durability and is ideal for applications requiring a premium appearance; Thermowood Ayous offers mid-brown tones with exceptional physical properties and excellent durability, available in light and dark tones. The preferred species in the market are these 4 (not 3 - Clear Radiata was missing). The name is Scandinavian Thermo, not Thermo Pine. Each type can be customized in different profiles and lengths to meet your specific needs.
Can I use Thermowood for pools? +
Yes, Thermowood is excellent for pool applications. Its moisture resistance, dimensional stability, and natural resistance to fungi and insects make it ideal for pool decking and pool house cladding. Thermowood does not absorb water excessively like conventional wood, reducing swelling and contraction that can cause damage over time. Thermowood Ayous is ideal for walls, while Ash can be used for walls or ceilings.
Is Thermowood suitable for saunas? +
Absolutely. Thermowood Ayous is especially recommended for sauna applications. Its exceptional dimensional stability means it does not swell or shrink significantly with the temperature and humidity fluctuations typical of a sauna environment. Additionally, Thermowood does not release sticky resins when heated, offering a more comfortable and safe sauna experience. The natural beauty of the wood also creates a relaxing and premium atmosphere in the sauna space.
Installation and Maintenance
What is the Thermowood installation process? +
Thermowood installation follows the same basic principles as conventional wood installation, with some special considerations. The wood must be acclimated at the installation site before installation. Use stainless steel screws or fasteners to prevent rust stains. Leave adequate expansion spaces between pieces to allow for natural movement. We recommend consulting our technical documentation for detailed installation guidelines, which includes information on acclimation times, fastener specifications, and coating requirements.
How should I maintain and care for Thermowood? +
Thermowood requires minimal maintenance compared to conventional wood. For exterior applications, we recommend regular cleaning with mild soap and water to remove dirt and debris. For interior applications, regular cleaning with a damp cloth is generally sufficient. Avoid harsh chemicals or abrasive cleaners, as they can damage the surface. Please consult our technical documentation for detailed maintenance guidelines, which includes information on acclimation times on site and coating requirements.
Is Thermowood resistant to insects and fungi? +
Yes, one of the main advantages of Thermowood is its natural resistance to insects and fungi. The thermal modification process alters the chemical composition of the wood, making it much less attractive to wood-eating insects and wood-rotting fungi. This natural resistance means you don't need additional chemical treatments, making Thermowood a safer and more eco-friendly option for any application.
Technical Specifications
What dimensions of Thermowood are available? +
Thermowood is available in various dimensions to meet different project needs. Lengths range from 6 to 16 feet, always sold in random lengths within specific length groups: Compact (4-6 feet), Medium (7-10 feet), and Long (11-16 feet). Thicknesses and widths vary depending on the type of Thermowood and application. We offer specialized profiles for interior and exterior applications. For exact specifications and customization options, please consult our technical specifications sheet.
How is Thermowood packaged? +
Thermowood is carefully packaged in quantities determined by wood thickness and specifications. This packaging is designed to facilitate handling, transportation, and storage while protecting the wood from damage. Each package is clearly marked with specification and quantity information. For exact packaging details, please consult our technical specifications sheet.
Purchase and Distribution
Where can I buy Thermowood? +
The Legitimate Thermowood is sold in the U.S. under the Maximo Wood brand, which is distributed nationwide in the United States through select distributors including Boise Cascade, Hardwoods Inc, and Russin. We recommend contacting us or visiting our "Where to Buy" page to locate an authorized distributor or reseller in your region. Purchasing through authorized distributors ensures you are receiving a genuine product with all appropriate warranties and technical support.
Can I order Thermowood samples? +
Yes, we offer Thermowood samples to help you evaluate quality, color, and texture before making a larger purchase commitment. Samples are an excellent resource for visualizing how Thermowood will look in your specific space and for comparing it with other material options.
Projects and Inspiration
Do you have examples of projects that used Thermowood? +
We have extensive experience with Thermowood applications across diverse climates and project types. Thermowood from Novawood has been tested in over 80 countries, demonstrating its versatility and performance in various environmental conditions. We can provide detailed case studies and project references to support your decision-making process. Please contact us for a comprehensive portfolio of maximum projects.
How can I visualize Thermowood in my project? +
We recommend requesting physical Thermowood samples to see how it looks in your specific space with your particular lighting. You can also consult our case studies and project gallery to see how Thermowood was used in situations similar to yours. Additionally, our distributors and contractors typically have experience with previous projects and can show you examples of their work. Our team is here to help you visualize your project and provide personalized recommendations based on your specific needs and preferences.
Authenticity and Quality
What makes Thermowood different from other thermally modified wood? +
Not all thermally modified wood is created equal. Thermowood from Maximo Wood is produced using one exclusive and legitimate thermal modification process that has been refined and perfected over decades. These process uses precise temperature control and specialized techniques that result in superior durability, dimensional stability, and aesthetic qualities compared to other thermally modified wood products on the market.

The key differences include:
  1. Proprietary Process: Thermal modification process is specifically engineered to optimize the wood's physical properties while maintaining its natural beauty and workability.
  2. Quality Control: Every batch of Thermowood is rigorously tested and certified to meet our strict quality standards, ensuring consistency and reliability across all products.
  3. Certified Sourcing: We source our wood from sustainably managed forests with full chain-of-custody certification, guaranteeing the authenticity and environmental responsibility of every product.
  4. Performance Guarantee: Thermowood from Maximo Wood comes with a 20-year durability guarantee in exterior applications, backed by our commitment to excellence and customer satisfaction.
  5. Technical Support: Our team of experts provides comprehensive technical support, including installation guidelines, maintenance recommendations, and project consultation to ensure your success.
When you choose Thermowood from Maximo Wood, you're choosing a product that has been tested and proven to deliver exceptional performance in diverse climates and applications. We stand behind our product with industry-leading warranties and dedicated customer support.