How only wood can make a safe, stable place for your family to grow and thrive
Learn about how important your home is to your health
Are you looking for an living space that rejuvenates you and does not drain you? A place also built using an environmentally-friendly living building system? One that is an alternative to traditional cold and dead steel, concrete and plaster?
Then you need Holz100. Holz100 is an innovative wooden construction technology developed by Austrian forester [Dr. Erwin Thoma].
Holz100 creates secure, energy-efficient, fire-resistant and earthquake proof structures using only pure wood. Only. There are no chemicals used anywhere. Holz100 has global recognition and been used in many countries, with over 2,500 builds to date, from Austria to Japan.
Watch our video for a glimpse of what Holz100 can offer.
Video not loading? Go [here] for a local version. Video by: Mona Az @ Science Safari
In this article, we’ll explore the benefits of Holz100 and how it’s helping to create a more sustainable future and a place you can really call “Home”. A place where you can rejuvenate both body and soul.
How Wood Shaped Our Civilisations
Wood played a significant role in human development, but it has been overlooked in our history lessons. We need to remind you now. From the earliest use of fire, to the development of fishing tools, boats, houses, castles, chapels, wagons, and ships, wood played an essential role in developing our civilisations.
This versatile and resilient raw material enabled us to travel, explore, and discover the world. Yet, its incredible potential remains unknown to most people.
Revolutionising Sustainable Wooden Construction
The architecture and design industry has overlooked wood for too long, deeming it outdated, risky, expensive. A fairly recent adaptation of wood – laminated particle boards – became a billion-dollar business bringing wood back to the table.
Unfortunately, the chemical industry is heavily involved in the process. Laminated particle board requires harmful substances like glues, preservatives, insulation, varnishes, and films that pose health threats to occupants. Hence they are often coupled with Styrofoam insulation: a non breathing mould producing material itself.
Mould further creates an unhealthy, and often lethal, living area.
Solar house with south facing wall mounted solar panels
But one man’s experience, perseverance, and determination have sparked a revolution in timber. He has resurrected ancient knowledge that was once ridiculed in modern Europe, breathing new life into the woodworking industry. Despite initial scepticism, he has earned the respect of scientists with his innovative approach to woodwork and decades of demonstrable scientific success.
Efforts have led to a renewed interest in wood, and we may see a shift away from traditional building materials towards sustainable and eco-friendly options.
The Inspiring Journey of Dr. Erwin Thoma
Dr. Erwin Thoma, an Austrian with a passion for climbing, had always dreamt of becoming a forester. After completing his forestry engineering education, Dr. Thoma was convinced that modern engineering could solve any problem. However, it wasn’t easy for young foresters in Austria to get their own forest supervision area, often waiting several decades for the opportunity.
Luckily, Dr. Thoma stumbled upon an area in the Carlinville mountains where nobody wanted to be a forester, with snowed-in homes cut off from the world in winter, and the closest storm 50 kilometres away. This was a dream come true, and he decided to move there with his wife, making it his permanent home. Dr. Thoma’s story is a testament to the power of perseverance and passion, as he turned his dream into reality by finding the perfect place to call home and pursue his life-long ambition.
The Three Key Life Events that Sparked a Revolutionary Problem-Solving Journey for Dr. Thoma
Forester Dr. Thoma stumbled upon a remarkable discovery when he met violin makers by chance. Little did he know that the woods used for crafting violins were beyond extraordinary, with only one spruce tree out of a million deemed perfect for the instrument [1].
After days of listening and searching, the luthiers finally found a suitable large spruce tree. They cut it down and turned it into a violin, which they played at a small concert to show their appreciation.
This experience opened Dr. Thoma’s eyes to the value of wood beyond his forestry education. He learned that ancient traditional knowledge can create a magnificent instrument.
The Luthiers explained that a violin like this could be worth 100 times its weight in gold, becoming an invaluable treasure for all cultures because of the joy it brings for generations of music lovers.
Dr. Thoma’s encounter with the violin makers is a beautiful example of how modern forestry and traditional craftsmanship intersect. It proves that sometimes, the worth of something transcends its material value.
Dr. Thoma’s discovery has transformed the way we think about wood and its potential, demonstrating that everything comes full circle.
When Dr. Thoma’s children started coughing after moving into a new apartment, he was perplexed. Persistent coughing threatened the children’s health, despite many doctor visits.
Investigation revealed that particle boards in their new apartment, used for furniture and flooring, were causing allergic reactions due to the chemicals seeping out of them. Chemicals used for their construction. Only cortisone therapy was recommended as a solution.
His grandfather, who was a carpenter, came up with a simple yet effective solution. They replaced the particle board walls and furniture with handmade solid wood.
Within a short period, the children’s allergy symptoms disappeared, and they were once again healthy.
His experience made it clear the risks of particle board furniture and the advantages of choosing natural, solid wood alternatives [2].
In the 1980s, Dr. Thoma opened a woodworking shop based on the belief that wood can help people. Most of their early orders were for flooring, but the wood often swelled and contracted due to moisture.
Dr. Thoma’s grandfather again suggested a solution – only use wood that was harvested at its best. This meant only harvesting wood when the sap levels were at their lowest in winter, and most importantly, solely during the waning moon.
Dr.Thoma was initially sceptical but decided to try harvesting timber in January during the waning moon. The timber was set aside in one pile while other timber was harvested and stored in another pile at the neighbour’s.
This meant only harvesting wood when the sap levels were at their lowest in winter, and most importantly, solely during the Waning Moon
When he went to collect firewood in the spring, he made a surprising discovery. The pile of wood harvested during the waning moon was completely free of wood worms, while the other pile was heavily infested. It turned out that Dr. Thoma’s grandfather had a traditional practice of harvesting wood at the best time, and it had proven to be effective.
Initially skeptical of this traditional method, he learned that combining modern knowledge with traditional wisdom could create sustainable and effective solutions. This experience taught him an important lesson – that there is always more to learn beyond the classroom, and seeking out traditional knowledge can be just as valuable as formal education.
The pile of wood harvested during the waning moon was completely free of wood worms, while the other pile was heavily infested
Moon Wood: A Sustainable and Strong Alternative to Traditional Wood
Throughout his years of working with wood, Dr. Thoma conducted his own research upon the type of wood that he called Moon wood. This unique wood was more resistant to fungus, dried faster, and was harder and stronger than traditional wood.
Despite being advised to keep this valuable knowledge a secret, Dr. Thoma published a book titled “I Saw You Grow” that described the phenomenon of Moon Wood. The book received positive feedback from the woodworking industry, being hailed as a breakthrough in clean, sustainable living.
A five year Moon wood study program was arranged by Professor Ernst Zurcher at the ETH Institute in Zurich after he read the book [3]. The research conducted in Zurich validated Dr. Thoma’s findings.
The research has been published in reputable publications, and Professor Zurcher continues to explore the effects of the moon on natural phenomena.
Dr. Thomas discovery has transformed the way we think about wood and its potential, demonstrating that everything comes full circle.
Moon’s Phases Impact Quality of Wood, Reveals Study
Scientists at the ETH Institute in Zurich have made an astonishing discovery related to trees and the moon’s phases. The research began with the observation that trees pulse in response to the lunar cycle.
These pulsations are connected to an electromagnetic field that forms around the trees, which resembles an aura. Further research on the inter-molecular interactions in wood found that water in its liquid state manifests in clusters that are influenced by the phases of the moon, similar to tides.
Trees pulse in response to the lunar cycle. These pulsations are connected to an electromagnetic field that forms around the trees, which resembles an aura.
During the waning moon, individual water molecules disconnect from these clusters and combine with single molecules of cellulose on the surface of capillaries, resulting in the formation of a gel-like state. Scientists have discovered an interesting connection between trees, the moon, and the wood they produce.
Trees have an electromagnetic field that separates certain molecules, and the moon’s gravity affects the water inside trees, which impacts the quality of the wood [4]. This type of wood can last for many years without any treatment, making it a great option for building in an eco-friendly and sustainable way.
By harvesting trees during the waning moon phase, the wood is highly resistant to pests and fungi, so it doesn’t need chemical preservatives.
Holz 100 Technology: A Sustainable Revolution in House Building
In the 1980s, building houses from solid wood was not common. However, Dr. Thoma had a passion for creating wooden homes that were free of chemicals and toxins. He developed and patented his own wooden building system called ‘Holz100’.
Holz100 is innovative technology that uses only 100% wood, without the need for chemicals, screws or nails. The walls were thick, consisting of five layers of wooden boards, joined by dry wooden pegs to create a sturdy structure.
Holz100 made it possible to build a turnkey single-family home in just a day or two. The use of horizontal, vertical, and diagonal layers provided exceptional durability, comparable to that of a concrete wall, even in the event of floods.
Dr. Thoma’s ‘Holz100’ technology revolutionized the wooden house building industry by providing a sustainable option for those seeking a natural and healthy living environment.
Holz100 Wood: Game-Changer in Sustainable and Safe Construction
Holz100 is a Better Insulator
Holz100 is a type of wood with no adhesive between its layers, creating tiny air gaps that enhance thermal insulation. It also has extra air channels that contribute to this effect, and is good at keeping buildings warm.
It’s actually twice as good at insulating as regular wood!
That means that a wall made with Holz100 that’s only 36 centimetres thick can keep a building as warm as a wall made with regular wood that’s 75 centimetres thick (for example cross laminated timber, CLT).
Holz100 is a type of wood with no adhesive between its layers, creating tiny air gaps that enhance thermal insulation.
That’s pretty amazing, right? But what’s even cooler is that Holz100 doesn’t have any chemicals or toxins in it. This makes it really safe to use, and it’s even set a world record for being the best at insulating buildings without any harmful substances.
At first, some people didn’t believe that Holz100 could be so good. After testing it out, experts at the [Fraunhofer Institute] and [Graz Technical University] have confirmed that it is a game-changer. They’ve even given it certificates to prove it!
When it comes to keeping our homes warm in cold weather, we need materials that can provide effective insulation.
The U-value is a measure that’s often used to determine a material’s insulating properties, but it doesn’t always give us the full picture. That’s why a team at the University of Graz decided to conduct an experiment to compare the insulating ability of different types of walls.
They tested internally insulated prefabricated walls made of gypsum and particle board, a brick wall with polystyrene insulation, and a 30-centimetre solid wood wall made of Holz100.
The experiment measured how long it took for the inside of the wall to reach zero degrees Celsius when the outside temperature was set at minus 10 degrees Celsius.
The results were surprising. The prefab wall reached zero degrees in just two days, while the insulated brick wall took ten days. But the Holz100 solid wood wall was in a league of its own, taking over a month to reach the same temperature.
Holz100 is Mould and Mildew Free
Moisture is a major concern in construction, and it can cause problems like mould growth and condensation. Unfortunately, most construction companies can only guarantee that their materials will remain mould-free for up to five years.
A recent study in Lower Saxony found that 80% of homes with Styrofoam thermal insulation had mildew growth between the wall and insulation. Mould is a dangerous toxin that can make a home uninhabitable.
But there’s hope! Dr. Thoma, now a leader in the industry, offers a 50-year guarantee against moisture and mould in Holz100 homes.
2,500 homes have been built across 33 countries, from the tropics to the Arctic Circle, and has never received a single complaint about mould or moisture in a Holz100 building. This is a bold step that sets a new standard for the construction industry, and it offers peace of mind for homeowners who want to ensure that their homes are safe and healthy places to live.
Dr. Thoma, a leader in the industry, offers a 50-year guarantee against moisture and mold in his Holz100 homes.
Dr. Thoma’s Pioneering Efforts in Creating Fire-Safe Wooden Houses with Holz100
Back in the 1970s and 80s, the German government thought wood houses with more than one floor were too dangerous because of fire risks. But Dr. Thoma believed differently. He wanted to build multi-floor wooden houses that were completely safe from fire.
To prove his point, Dr. Thoma went to the [IBS Institute] and asked for a fire safety certificate. The manager there suggested testing the wooden wall with a flame of 1000 degrees on one side for 30 minutes (known as the [F30 test]). But Dr. Thoma was so confident in his Holz100 wooden wall that he wanted to test it beyond that. The manager was sceptical at first, but eventually agreed to run the test – as long as Dr. Thoma paid for it.
It was a surprise to everyone when the oil tank of the furnace ran out of oil after 122 minutes and the Holz100 wood was still intact.
The institute decided to conduct another test at their own expense, and the results were incredible. Dr. Thoma’s Holz100 wall endured a 1000-degree flame for three hours, and the temperature on the opposite side only increased by 1.8 degrees Celsius.
This is a stark contrast to reinforced concrete walls that can reach 600 degrees on the opposite side in 20 to 30 minutes,. This causes cracks and melting of the re-bar rods. – total concrete structural failure.
Holz100 wall endured a 1000-degree flame for three hours
Dr. Thoma’s innovative approach has led to the creation of certified firewalls made of wood for industrial use. This pioneering effort in wooden construction has revolutionised the industry and proven that wood can be as safe as any other construction material [5].
Dr. Thoma’s achievement in creating certified firewalls made of wood for industrial use has revolutionized the industry, proving that wood can be as safe as any other construction material.
Dr. Thoma’s Eco-Friendly Holz100 Product Finds Success in Japan
Dr. Thoma wrote a book on Moon wood technology, and it caught the attention of a delegation from Japan led by the highest monk of the Japanese Buddhist monastery, Huryu-ji. They were impressed by Dr. Thoma’s eco-friendly practices and the Moon wood buildings. The monk promised his support, and a Japanese publisher reached out to Dr. Thoma to translate his book.
This led to a demand for Dr. Thoma’s Holz100 product in Japan, which was previously thought impossible for a small company like his. However, the product had to obtain the most restrictive certificate for earthquake resistance to enter the Japanese building materials market.
This was a major achievement for Dr. Thoma and his team, as it proved their product was of the highest quality and could withstand natural disasters.
Dr. Thoma’s team constructed a Holz100 house for seismic testing on Japan’s largest platform. Despite having to weaken the structure to obtain certification, it withstood the severest simulated seismic shocks. The final safety certificate awarded was of the highest class available in Japan.
The Moon wood technology developed by Dr. Thoma gained popularity in Japan with the help of a Buddhist monastery, as their eco-friendly practices aligned with the principles of the Buddhist faith. Holz100’s success in Japan is a testament to Dr. Thoma’s commitment to sustainable building practices and innovative approaches.
Dr. Thoma’s Moon wood technology gained popularity in Japan, and Holz100’s achievement of the most restrictive earthquake resistance certificate is a testament to his commitment to sustainable building practices and innovative approaches.
Dr. Thoma’s Sustainable House: A Self Sufficient Example of Nature’s Engineering
Trees do more than provide beautiful scenery – they’re natural engineers that transform air into a complex structure we know as wood. With only minerals and water from the earth, they create an efficient and natural insulator that stores and accumulates heat with ease.
Dr. Thoma, a renowned energy efficiency expert, wanted to demonstrate that it was possible to create an energy self-sufficient home without relying on external sources like photovoltaics.
He achieved this with a five-floor house located in the Matterhorn area of the Swiss Alps. The house features an optimised facade with intelligent glass elements that make it possible to achieve energy self-sufficiency
Dr. Thoma’s low energy example house is a unique and sustainable living space that uses natural materials and ancient methods to keep it warm and comfortable all year round.
During the day, black stone floors called “sun traps” capture the sunlight and store the heat. The wooden walls, which have excellent insulation, then keep the warmth inside for long-lasting comfort.
The house doesn’t need any heating or ventilation, and its air quality and temperature are carefully monitored as part of a research project.
Even in winter, the indoor temperature never drops below 18 degrees centigrade, which is very impressive. This house shows that we can use nature’s engineering to create a truly sustainable and comfortable living space.
Dr. Thoma’s energy, self-sufficient house in the Swiss Alps demonstrate the possibility of using natural materials and ancient methods to create a truly sustainable and comfortable living space.
Dr. Thoma’s Eco-Friendly Building Innovations: From Safe Military Structures to Eco-Friendly Hotels
Dr. Thoma’s company is using solid wood to build safe and secure structures for the German army. Why? Because solid wood has been found to be the safest material in the event of fire, flood, or earthquakes, and it can protect against all kinds of harmful high-frequency electromagnetic waves.
Amazingly, wood can even block frequencies emitted by mobile phones, making it the perfect material for buildings that require top-level surveillance protection.
Thanks to research by the [Bundeswehr University] in Munich, Dr. Thoma’s company is now able to construct structures that provide complete protection for the German army and its inhabitants in all situations.
These structures offer unparalleled safety and security, ensuring that the German army can operate with peace of mind.
When you’re staying at a hotel, you want to be able to sleep peacefully without being disturbed by noise from the next room. Dr. Thoma’s Nature Hotel Waldklause has taken acoustic insulation to the next level by using wooden walls that have a sound insulation rating of 63 decibels. That means you can even drum loudly without bothering your neighbours!
The hotel, located over seven floors, is built entirely from Holz100, a strong and sustainable 100% pure wood material. Guests can also enjoy a massive open-air panoramic swimming pool with breathtaking views of the surrounding mountains.
Dr. Thoma and his team worked quickly and efficiently to complete the hotel in just two months, from laying the foundation to opening the doors.
With top-notch acoustic insulation and eco-friendly building materials, the Nature Hotel Waldklause is not only the quietest but also the most environmentally-friendly hotel in the world.
The Haramora church in Japan, located near Fukushima, is renowned for its ability to withstand earthquakes, including the well-known earthquake that struck the region in 2011.
But not only is it earthquake-resistant, it can also survive typhoons with wind speeds of up to 200 kilometres per hour.
What makes this building’s resilience all the more impressive is that it’s built of wood. Unlike concrete, which becomes irreversibly damaged once it passes the breaking point, wood flexes and shifts into the elastic phase, then returns to its original form.
In 2012, Dr. Thoma’s company constructed the remarkable five-floor commercial wooden building in Hamburg. This is ArcheNEO in Oberndorf, Tirol.
This 6600 square meter office complex is completely energy self-sufficient and is made entirely of wood, without the use of any chemicals. Its tenants never have to pay for heating year-round, thanks to heat pumps that are powered by photovoltaic cells located on the roof.
The building is a testament to the incredible potential of wood as a sustainable, eco-friendly building material that are demonstrably superior to concrete and steel.
Wood and Well-being: The Groundbreaking Joint Research Project of Dr. Thoma and Professor Moser
Dr. Thoma is an expert in building and renovating homes and hotels. He’s been fighting for almost two decades to promote the use of wood in construction, despite facing opposition from the wood and chemical industries.
Although he achieved all of his technical goals, Dr. Thoma found it challenging to scientifically prove the positive impacts of wood on people’s well-being.
Even though many people enjoy living in wooden houses, he struggled to provide academic and scientific evidence to support his claims. He attempted to collaborate with medical professionals, but they were unable to help him. Then, one day, Dr. Thoma had a fortuitous encounter with Professor Max Moser, which changed everything for him.
Professor Max Moser, a respected scientist and department chair at the Medical University in Graz, has invented a special device that can measure how different substances affect the human body’s autonomic nervous system.
Dr. Thoma saw the potential of this technology to prove the health benefits of wood and suggested a joint research project.
After a year of fundraising, they secured a large sum of money for a research project. They built two identical rooms, one made of solid wood and the other of laminated particle boards.
The results were conclusive: the research showed that being in a room made of wood has a positive impact on people’s well-being.
This study provided scientific proof to back up Dr. Thoma’s belief that wood is good for human health.
Wooden Rooms Can Boost Your Health: Scientific Studies Show
More scientific studies suggest that being in a room made of solid wood can be good for your health. When you move from a room made of laminated particle board to a solid wood room, your body’s functions can change within just 10 minutes. This is because the wood releases certain substances that signal to your body that you are safe, which can cause your heart to relax, stabilise, and slow down.
This is important because many people in Western Europe die from cardiovascular disease, cancer, dementia, or Alzheimer’s disease. Using more wood in our living and working spaces could help to reduce these risks.
Sleeping in a wooden room results in a slower heart rate, saving one hour of heartbeats overnight, which equates to years of extra heartbeats in a person’s lifetime.
Therefore, it can be said that people live one hour longer per day in a wooden room, with deeper and more regenerating sleep.
Furthermore, people who experience sleep problems find that they fall asleep more easily in a wooden room.
Similar benefits can be observed from taking a walk in the forest, which has a similar effect on people. It is noteworthy that communication by [semiochemical] substances is only one type of interaction between trees and humans.
The findings demonstrate that being surrounded by solid wood can bring several health benefits. These benefits are especially crucial in today’s world, where people face an increasing number of health challenges.
Therefore, considering the scientific findings, the use of wood in constructing living spaces may be a wise choice.
Surrounding yourself with solid wood can bring several health benefits, including a slower heart rate and deeper sleep. Using more wood in our living and working spaces may be a wise choice to reduce health risks and improve overall well-being.
The Surprising Discovery of Forest Communication: ‘’How Trees Talk to Each Other?
Dr. Thoma met a famous forester named [Peter Wohlleben] who wrote about how forests communicate. [6]
Researchers at Leipzig University found that trees can recognise the saliva of different animals and respond to different situations. For example, oak trees release chemicals to attract predators that eat leaf-eating caterpillars.
Trees can also communicate with each other through their roots, forming a network called the [“Wood Wide Web”]. This helps trees warn each other about danger, like insect attacks or drought.
Trees can even repay their helpers with sugar using electrical impulses and chemicals. This discovery reveals how complex the relationships are between organisms in a forest.
Mycelia: Earth’s Largest Living Organisms and Their Natural Remedies
Did you know that [Mycelium] are the largest living organisms on Earth? Spanning thousands of acres, some scientists believe that all Mycelium on the planet are interconnected.
These fascinating organisms have the ability to communicate with trees, warning them of drought and alerting them to nearby predators. When a tree is attacked, its neighbours produce defensive substances like resin, which contains over 1000 complex chemicals and serves as a natural fungicide, bacteria side and virucidal agent. Resin has been known to promote wound healing and increase the lifespan of trees by over 1000 years.
Professor Max Moser, an expert in the field, has analysed the miracle wound ointment made by Dr. Thoma’s grandmother and attests to its incredible healing properties.
The world of Mycelium and their natural remedies are truly fascinating, and we can only hope that their potential benefits will one day be fully explored.
Discover the Sustainable Economic Model Inspired by Nature’s Forests
The forest has always been a source of inspiration for humans, from its beauty and tranquillity to its healing effect on our mind and body. However, what we often overlook is the forest’s exemplary economy, which teaches us the fundamental principles of sustainability and cooperation.
Forestry and economics may seem like two opposite areas of science, but Dr. Thoma discovered that the forest’s model is the only one that can guide us towards a sustainable economy.
In today’s economy, exponential growth and the elimination of competition are the primary goals. However, the forest teaches us that cooperation and creating the best conditions for the next generation is the key to sustainable growth.
Trees compete only at the beginning of their lives, and they don’t try to grow indefinitely and seize all resources for themselves. When a tree dies, it returns each of its particles to where it came from, leaving no waste in the wake of its life. According to Dr. Thoma, this model is the only one that can guide us towards a sustainable economy.
Dr. Thoma’s Holistic Approach to Manufacturing and Building: Waste-Free and Environmentally Conscious
Dr. Thoma has come up with a new way of making things that doesn’t create any waste. He runs a factory that uses robots and computers and gets all its power from solar panels.
Any extra power goes back into the grid. The factory makes things out of a material made from carbon dioxide that doesn’t produce any waste.
Dr. Thoma thinks that there isn’t really a crisis with energy or the economy – the only problem is that we don’t have the right ideas about how to do things.
In the furniture industry, there are some materials that are bad for the environment and our health. Dr. Thoma thinks we should use solid wood instead of particle boards glued together with harmful chemicals.
He also thinks we should make buildings out of wood instead of using Styrofoam for insulation, which doesn’t work well, promotes mould and fungal growth and is hard to get rid of.
Dr. Thoma believes we should use solar power to heat and cool buildings instead of burning fossil fuels. A wooden building can get all the power it needs from just a few solar batteries.
Dr. Thoma’s remarkable example demonstrates that individual perseverance can spark significant change in our world.
It’s time to start thinking differently and embrace sustainable solutions for the future economy. We can learn from the forest’s cooperative model, where creating ideal conditions for future generations is key to sustainable growth.
Dr. Thoma’s holistic approach to manufacturing and building provides the blueprint for a sustainable economy.
Waste-free production and environmentally conscious buildings are the cornerstones of his philosophy. By adopting these principles in our daily lives, we can make a positive impact on the planet.
References & Links
1. Lark-Horovitz, K., & Caldwell, W. I. (1934). Structure of the Wood used in Violins. Nature, 134(3375), 23-23.
2. Garrett, M. H., Hooper, M. A., Hooper, B. M., Rayment, P. R., & Abramson, M. J. (1999). Increased risk of allergy in children due to formaldehyde exposure in homes. Allergy, 54(4), 330-337.
3. Zürcher, E. (2001). Lunar rhythms in forestry traditions—lunar-correlated phenomena in tree biology and wood properties. In Earth-Moon Relationships: Proceedings of the Conference held in Padova, Italy at the Accademia Galileiana di Scienze Lettere ed Arti, November 8–10, 2000 (pp. 463-478). Springer Netherlands.
4. Holzknecht, K., & Zürcher, E. (2006). Tree stems and tides–A new approach and elements of reflexion (reviewed paper). Schweizerische Zeitschrift fur Forstwesen, 157(6), 185-190.
5. Fire Testing Holz100 https://youtu.be/aJSWhZMwCl0
6. Wohlleben, Peter (2015). Das geheime Leben der Bäume (in German). Munich: Ludwig. ISBN 978-3-453-28067-0
8. What is Moon Wood, https://www.youtube.com/watch?v=uwA-2XdKukk
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Web Sites Featuring Holz100 Technology
https://www.chalet-traumblick.com
https://www.haus-lorea-ehrwald.at
https://www.forsthofalm.com/en
https://www.zimmerei-baumann.de/de/leistungen/thoma-holz100
https://www.kanada-blockhaus.ch/system-thoma-holz100
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