Picture a wood that balances elegance, durability and versatility – a natural material that not only meets your demands but also exceeds your expectations.
With its striking grain patterns and excellent strength-to-weight ratio, ash has long been a favourite among craftsmen and architects seeking a blend of style and strength. Its natural beauty and performance make it stand out. While ash shares oak’s timeless appeal, strength and durability, it offers a slightly lighter weight, making it ideal for both traditional and contemporary designs.
Imagine taking a wood species already admired for its resilience and beauty and then elevating it to rival the performance of tropical hardwoods. Thermal modification enhances ash’s natural properties – rendering it highly resistant to moisture, decay and warping while deepening its naturally warm tones into rich, luxurious hues. The result is a wood species that doesn’t just look good but delivers lasting performance, even in the most challenging outdoor environments.
Whether you’re crafting sophisticated interiors or creating outdoor spaces to endure the elements, thermally modified ash is the sustainable, high-performing choice that guarantees satisfaction – with no compromises required.
Thermo-ash is an extremely durable material that’s suitable for a variety of applications. The material’s resistance to decay (class 1 rating for 25+ years) makes it perfect for long-lasting cladding and decking, ensuring beauty and functionality when used outdoors. Indoors, its warm tones and stability enhance walls, ceilings and floors, adding sophistication and resilience to both residential and commercial spaces.
Thermory product portfolio offers a wide selection of designs and products for different applications:
Thermory was the first company in the world to thermally modify ash on an industrial scale. We have over 25 years of unparalleled expertise, making us pioneers in the thermally modified wood industry. This long-standing experience ensures premium craftsmanship, innovative solutions and reliable product performance.
We source only the finest hardwoods from sustainably managed forests, and our requirements for suppliers are high. Careful selection guarantees consistent quality, making our thermo-ash durable, visually appealing and environmentally responsible.
Thermory’s products meet comprehensive international certifications, ensuring environmentally conscious practices, sustainable sourcing, and top-tier quality. This commitment gives customers confidence in choosing materials that align with both performance and environmental standards.
Let nature take its course. Thermory thermo-ash gracefully weathers over time, developing a silver-gray patina while maintaining its structural integrity – making it the perfect option for a low-maintenance natural look.
To retain thermo-ash’s brand-new appeal, its original rich tone can be enhanced and protected with regular UV-protectant oiling. This method preserves the wood’s deep brown color while adding extra defense against weathering and wear.
For added safety, Thermory thermo-ash can be impregnated with fire-retardant. In the process, the retardant is pressed deep into the cell structure of the wood. This option provides extra peace of mind while keeping the wood’s beauty intact.
Thermory thermo-ash undergoes intense heat treatment, significantly boosting its resistance to rot, decay and harsh weather. With Class 1 durability and 25+ years of rot resistance, it offers long-lasting performance even in the toughest climates.
Our thermal modification process stabilizes ash wood by reducing its moisture content, minimizing warping and shrinking – even in challenging environmental conditions – meaning it can be relied upon to meet the demands of any project.
Thermory’s dedicated craftsmanship and advanced processing techniques ensure a flawlessly smooth finish. Our precise milling and expert finishing processes elevate ash into a premium wood product that feels every bit as good as it looks.
Choosing Thermory thermo-ash supports sustainable forestry by reducing reliance on tropical hardwoods. Our ash is exclusively sourced from responsibly managed forests, helping to preserve the world’s most vulnerable ecosystems.
Our thermal modification process uses only heat and steam – no harmful chemicals. This environmentally friendly method creates long-lasting wood products while ensuring safety for people and the planet.
We make the most of our material. Surplus ash from our production processes is transformed into a multitude of beautiful products such as Decor Rhomb, Herringbone decking and Shingles, reducing waste and maximizing sustainability across our operations.
Finding the best solution to clad buildings is important for several reasons – as well as defining the look and feel of your design, it also has a major...
The purpose of biophilic design is to create spaces that deliver benefits for both human health and the environment by nurturing people’s innate affinity...
Introduce comfort, style and practicality into your outdoor space so that you can enjoy more time in the fresh air during the coming warmer...
Summer is just around the corner, and as we eagerly look out to see the evidence of rising temperatures, that can only mean one thing...
Natural wood can be used in many different ways. The beauty and versatility make wood unequalled building material. As both an interior and exterior design...
Wood is like wine; it just gets better with age and never seems to lose its beauty. Even with the increasing number of modern materials, we prefer wood for...
We have often mentioned in our articles that Thermory Ash belongs to durability class 1 and Thermory Pine is in durability class 2. But what exactly does...
Home is where the heart is – a place where the whole family can feel safe and warm. The building materials you choose should enhance this feeling and...
Wood is one of the most common building materials in the world and, with responsible forest management, it is the only renewable building material we have....
The decking in your home bears witness to numerous magnificent and memorable moments. On warm days we sit on the deck and bask in the sunshine, at night we...
How did the wooden Viking ships endure the corrosive effects of salt water? Nordic seafarers used to treat their wood with fire. Our contemporary...
Natural wood feels warm and inviting in both interior and exterior design. Especially in outdoor use, it is important to choose wood that is not only...
With rising concerns about climate change, the world community’s responsibility to reduce our carbon footprint rests with each and every individual and...
As a natural material, the color of wood alters over time – and there is no exception with Thermory’s thermally modified wood products, which gradually...
You’ve selected the perfect decking for your outdoor space – now you just need to decide how best to secure it in its chosen location. There are two...
When considering how you’ll lay your new deck, there are many more options to decide between than simple vertical or horizontal alignment. In fact, with a...
If you’re considering which wood types to use for a renovation or construction project, there are several considerations that may influence your decision...
The warmth of springtime is fast approaching, and our thoughts are naturally turning towards spending more time outside. If you have a wooden terrace or...
PaCS (Press and Click System) product ranges combine high-quality Thermory thermowood with the unique installation system by Grad. It is a popular hidden...
To ensure that your Thermory cladding retains its natural warm and authentic character, it’s important to apply the correct maintenance techniques. The...
No matter where you live when you’re choosing a decking or cladding material, you’ll have to be mindful of how that material will change over time...
The location of this particularly beautiful modern country house is unlikely. Hidden in the forest, you arrive at a clearing with endless views over the...
In 2022, the global megatrend of sustainable architecture and building practices will continue. Architecture trends influence the choice of materials both...
THERMORY BENCHMARK THERMO-ASH
THE NETHERLANDS
THERMORY BENCHMARK THERMO-ASH
CALIFORNIA (USA)
THERMORY BENCHMARK THERMO-PINE CLADDING, THERMO-ASH DECKING
ESTONIA
BENCHMARK THERMO-ASH C5J
AMSTERDAM, NETHERLANDS
THERMORY THERMO-ASH DECKING, THERMO-SPRUCE CEILINGS AND COATED CLADDING
OREGON, USA
THERMORY BENCHMARK THERMO-ASH
CALIFORNIA, USA
THERMORY BENCHMARK THERMO-ASH
CONNECTICUT, USA
Thermory Benchmark thermo-ash cladding
Colorado, USA
Thermory Benchmark thermo-ash C4J 20x52 mm / thermo-ash D4 sg 20x112 mm / Kyte thermo-aspen 15x60 mm / aspen STEP 27x64 mm / aspen STF 15x120, 15x85, 15x65 mm / aspen SHP 28x42 mm
Estonia
Thermory Benchmark thermo-ash decking D4, cladding C4J, wall panelling C7J and flooring F3
Estonia
THERMORY BENCHMARK THERMO-ASH DECKING D31
CANADA
THERMORY FLOORING THERMO-ASH 18X150MM (MEDIUM)
ESTONIA
THERMORY BENCHMARK THERMO-ASH CLADDING C5 20X72/140/190MM, BRUSHED AND THERMO-ASH MEDIUM FLOORING F5 18X245
ESTONIA
