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History of Thermo Wood

Thermowood History:

The history of wood burning and heating to increase the strength of wood and use in outdoor structures was first studied scientifically in the 1930s, and Finland is one of the leaders in the thermowood industry, which first launched the production line of this wood.

In addition, the country set up a Thermowood Technical Research Center and Association called VTT and conducted comprehensive research in this field, and finally the process of heat treatment of thermowood or thermowood by the Finnish Thermowood Association. With the cooperation of wood products industry, it entered the market so that today thermowood is produced and supplied according to the research done by this association.

Thermowood

It has been proven for centuries that burning wood surface in a fire makes it more resistant to outdoor use.

Thermowood or thermo wood (heated) is the same natural wood whose cellular structure has changed due to the thermal process. Heated or heat-modified wood is known as thermowood.

A special type of wood that has more strength and durability than other woods due to processing with advanced heating mechanism.

In general, no chemicals are used to produce this product.

Thermowood is also very resistant to mold, pests, termites, bedbugs and fungi.

In addition to the above, it has unparalleled stability in color and shape so that it retains its beauty for many years.

In general, spruce wood (ASH) and pine (PINE) are used to produce it.

Thermowood is known as a product from Finland, but it is also widely produced in Canada and Germany.

History of Thermo Wood

Thermowood Benefits

With the development of today’s society, one of the ways to create a favorable atmosphere for body and soul in life is to use natural elements and objects familiar to the mind.

Also, with the development of the construction industry in the world and the expansion of new constructions, the use of THERMOWOOD has expanded even more.

Thermowood is commonly known in Iran as thermo wood. These two terms are equivalent and there is no difference. Vanwood is the supplier of the highest quality Iranian thermowood (processed wood).

Van Wood also produces all-timber houses in Iran and other countries in the region.

Thermo wood is one of the most widely used elements in the construction industry. The wood of desire for growth, maturity, softness flows in human life, which with its proper use in the living environment, can create a calm and pleasant atmosphere.

Thermowood gives us a sense of beauty, calm and naturalness that is transmitted to us from wood and is not comparable to any other material.

In general, the benefits of thermowood can be summarized as follows:

Light weight compared to similar and level materials

Maintaining the humidity of the environment to the standard of human natural needs

Normalize sudden temperature changes (cold to heat and heat to cold)

Quick installation

Much greater ability against water, storms and cold than other woods

Degradability and no harm to the environment during degradation (ecological design)

More flexibility and resistance to external pressures (such as earthquakes)

Sound insulation (due to keeping air in its pores)

Highly durable against decay in a variety of weather conditions

Resistant to warping and resizing

Resistant to attack by insects, microorganisms, and a variety of fungi and molds

History of Thermo Wood

Thermowood applications

Today, new wood materials such as thermo wood have revived modern architecture in the structure and give a warm spirit to the cold body of buildings.

Thermowood can be used in the exterior of the building, interior (interior decoration), flooring, outdoor villas and parks.

In general, the following applications can be implemented for thermowood:

Decking must be done with ash wood (sparrow tongue)

Wall plugs

Interior decoration

Stairs and rails

Outdoor Villa and Park (Outdoor)

Altar

Louvre

Roof garden

Pergola

Cornice

Swimming pool and sauna (Pool)

Door and Window

Disadvantages of thermowood

Given that no product or device is without flaws, in this section we try to honestly state some of the flaws and disadvantages of Thermowood.

The disadvantages of thermowood are summarized as follows:

Relatively high price

The biggest drawback to thermowood is that it is more expensive than other materials.

“Whoever the peacock wants to kill is like India”

It is highly vulnerable to sunlight and rainy conditions and constantly needs to be maintained and repainted at a relatively high cost.

Unfortunately, it is also weak in terms of fire

In contrast, termites, insects and fungi are much, much weaker than products such as wood plast.

Destruction of the environment and forests

Definitely, in order to produce thermo wood, forests and trees must be destroyed first. This can lead to irreparable damage in high consumption.

Impossibility of constructing a curve

Curved objects can not be drawn with thermo wood, and certainly many projects can not be completed with this product.

Round buildings, stadiums and rotating structures are difficult to implement with thermowood.

History of Thermo Wood

How is thermowood processed?

1. The wood is heated to a temperature of 220 °C so that the temperature rises before reaching the burning stage.

2. Increasing the temperature changes the chemical structure of the wood and as a result its properties also change. Changes in the properties of wood lead to an increase in the strength and durability of wood as well as an increase in the insulating properties of wood.

3. Thermowood processing changes the color of wood and turns it into a dark brown color. If the thermo wood is exposed to sunlight without any surface coating, it will gradually change color to a very attractive silver gray.

The process of thermo wood has different methods in which water vapor, oil, etc. are used, but in all these processes, the three stages of “drying, heating, and cooling” are common.

What is the thermowood process?

In short, in the thermowood process, the wood is heated to 180 to 215 degrees Celsius (processed wood) while being protected by steam. In addition to its protective role, steam affects the chemical changes that occur in wood. As a result of this method (thermal treatment or thermowood), a product called thermowood (thermowood) is obtained, which is also very environmentally friendly (processed wood). In the thermo process, the color of the wood darkens and becomes more balanced than ordinary wood in changing moisture conditions, and its thermal insulation properties also increase. Also, in thermal treatment (thermowood), wood becomes resistant to decay and the amount of dimensional change in it is minimized.

History of Thermo Wood

Thermowood installation:

Thermowood wood can be installed in two ways: wood substructure and using clips.

Wood substructure method:

If we want to use the wooden substructure method, the wooden substructure is executed perpendicular to the facade wood profiles, then its profiles are installed on the substructure by standard screws.

How to use the clips:

In this method, the substructure is done by ironwork or galvanized profiles and the final thermo woods are connected to the substructure by clips. The feature of this method compared to the first method is that the screws are not seen in the wooden facade, but the price of wood. The facade will be higher with this method.

Working with thermo woods is different from ordinary woods due to their structure, since the fragile structure that thermo woods find, it is not possible to cut Persian. If you cut thermo wood in Persian, its edges will be rooted. The standard cut in these woods is vertical.

When working with thermo, we should pay attention to some points. Instead of using nails in these woods, it is better to use stainless steel screws.

Steel nails in thermo woods rust quickly.

It is not recommended to use ordinary wood glue together. It is better to use polyurethane adhesives for this purpose.

Wood used to make thermowood:

Thermowood is obtained from special woods due to its properties, and the woods used must have the necessary quality and not every wood can be converted into thermowood, this quality only in some parts of the forests of Sweden and Finland. It is found that Finland is a leader in thermowood production and uses various types of wood for heat treatment and production of thermowood, and the price of thermowood varies depending on the type of wood used. If we want to introduce the woods used to produce thermowood, we can include spruce (Picea (abies)), pine (Pinus sylvestris), spruce (Populus tremula), birch (Betula pendula), sparrow tongue (Fraxinus excelsior), radiana pine ( (Pinus radiata), alder (Alnus glutinosa), larix (Larix sibirica) and beech (Fagus silvatica).

Types of thermowood:

If we want to express the variety of thermowood, in general, thermowood is divided into three categories, which are:

1) Types of thermowood in terms of production method:

One of the types of thermowood is based on the production method, for this division, thermowood is divided into two categories or classes, which are as follows:

Thermo-S:

In this classification, S stands for Stability, which means stability, and the purpose of creating a thermowood with this class is resistance and stability against environmental conditions, so in this method, the wood is heated to a temperature of 180 degrees Celsius to increase its strength. Raise. Therefore, the products that are produced and supplied using this method, depending on the amount of ambient humidity, have something between 6 to 8% change in size or swelling. Needle species of this product for indoor environments of buildings such as interior furniture, fittings in dry environment, doors and windows, saunas and its broad-leaved type for fittings in any weather conditions such as flooring, urban furniture and Sauna is used.

Thermo-D:

In this class D, the abbreviation of the word stands for Durability. The purpose and feature of this product is its natural durability, which is very important, for this purpose, in the production process of this product, the wood is heated to 220 °C and its strength raise against environmental conditions. This treatment method makes the product extremely durable and can be used in open environments. Humidity and temperature conditions of this wood have between 5 to 6% dimension change and swelling. The applications of this wood are suitable for outdoor places such as making exterior doors, wooden facades and walls, wooden shop signs, saunas, toilets and bathrooms, and urban furniture spaces.

Thermowood is made in such a way that by using heating in specific conditions and humidity, they increase the strength of wood and by changing the chemical structure of wood, it increases the strength and resistance of wood against rot.

This operation is performed in three stages. In the first stage, using heat and steam in special furnaces, the temperature of wood is raised to about 100 degrees Celsius, then the temperature is increased exponentially to 130 degrees Celsius for 6 hours.

After this stage, the moisture of the wood disappears completely.

In the next step, it raises the temperature to 225 degrees Celsius in two to three hours. Of course, this temperature depends on the type of wood, about 2 to 3 hours of this process

Continues.

In all these stages, steam is used to prevent the wood from burning or cracking. It is also constantly monitored so that the wood does not burn too much or become charcoal.

After 24 hours from the start of steaming and heating, the temperature of the tank is slowly reduced and this temperature reduction is done by spraying.

The thermowood is ready in about 42 hours. Thermo woods are known by the two abbreviations D and S. In group S, there will be a change in dimensions of 6 to 8% depending on the amount. D-series woods may have a change in dimensions or swelling between 5 to 6%.

2) Types of thermowood in terms of wood species

Another classification of thermowood is based on the type of wood used for heating. These woods can be divided into two general categories:

Soft Wood Thermowood:

Wood cut from coniferous trees such as pine are in this group

Hardwood Thermowood:

These woods are obtained by cutting broad-leaved trees.

3) Types of thermowood in terms of dimensions and profiles:

Thermowood wood profiles with a length of 3 or 6 with sections in various designs and dimensions are available in the market. In addition, the profiles are sold in two types of grooved and without grooved.

History of Thermo Wood

Features of thermowood or thermo wood:

1) Durability and stability of dimensions:

After processing and heat treatment of thermo wood, the moisture content of the wood is reduced by about 4 to 6%, and this causes a special feature called moisture balance. In general, the absorption of moisture and heat exchange of wood and its surrounding environment decreases surprisingly, and this has a significant impact on the stability of dimensions, reducing cracking and significantly increasing the insulation properties of thermowood timber.

2) Relative resistance to rot and insect attack:

Thermowood can be used in open and closed environments with ease due to high heating and breaking and decomposition of its sugar chains and lack of nutrient source for decaying insects and fungi.

3) No gum, uniformity and purity of wood:

Due to the heating process of thermowood wood, all harmful substances and resins such as formaldehyde are removed and the bacteria in the wood are eliminated, and finally a pure and sterile material that has a uniform color and state for multiple uses. Indoor and outdoor environments are produced.

History of Thermo Wood

Thermowood Benefits:

Quick and easy installation

Stability and durability against abrasion and environmental conditions

Ability to cut and create arched models

Easy installation and removal

Ability to move and relocate to another location

Easy to maintain and wash

Applications of thermowood

Thermowood can be implemented indoors and outdoors, some of its applications are as follows:

Indoor and outdoor flooring

Exterior of the building or wooden facade

A wooden billboard can be made and installed as a shop sign or door sign

Use in interior decoration

Awning and Louvre

Pergola

Doors and windows and under the ceiling

Roof garden

sauna

Swimming pool

Floor

Step

What should we consider when choosing a thermowood?

1) Thickness of profiles: The minimum thickness of profiles for various applications is 2 cm and less than it is unsuitable.

2) Thermowood density: The higher the thermowood density, the more resistance it will have

3) Reputable brand: It will be safer to buy any product based on a well-known brand. Obviously, reputable brands will bring peace of mind to the buyer.

Van Wood, supplier of the best Iranian thermowoods

Site address:

WPC.IR