What Is Thermowood Cladding

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Thermowood® is high quality timber cladding with natural weather resistance made from specially selected Northern Scandinavian Redwood (Pinus Sylvestris). Uncoated ThermoWood-D (pine) exterior cladding can provide a 30-year desired service life. During heat treatment, chemical and structural changes occur within the timber which alter and improve some of its basic characteristics. The average tangential swelling and shrinkage due to moisture for Thermo-D class treated wood is 5-6%, Thermo-D class ThermoWood® is classified as durable according to the EN113 standard - meeting Class 2 requirements.

But there are a number of other changes occurring during the modification process that also contribute to the increased durability such as a lower level of moisture. This is a process enhancing the whole wood area enabling to use the timber for specific purposes.

The ThermoWood product classification consists of two classes with different end use applications: Thermo-S and Thermo-D. Heat treated wood, so called Thermowood, is an environmentally friendly alternative to pressure impregnated wood. Mainly ash and pine are thermally modified, however other European woods such as oak, linden or beech can also be made more durable by this method.

Lunawood uses mainly spruce in the production of exterior cladding boards and other related products. Thermal modification, also known as heat treatment, improves the wood's resistance to decay and weather conditions, its thermal insulation capacity, as well as its dimensional stability in conditions with fluctuating moisture levels.

This thermal process enhances the chemical and physical properties of the timber and provides greater weather resistance without the need for toxic chemical preservative treatment. Timura primarily uses its patented press drying method to transform and refine ash, poplar, pine and oak into thermo wood with durability class 1 or 2.

The process improves dimensional stability and biological durability of wood. When the wood is subjected to intensive heat, it dries out deep into the core and any moisture and resin is removed from the timber. In this study two industrially important Turkish wood species, pine (Pinus nigraArnold.) and fir (Abies bornmülleriana Matf.) were heat-treated using the ThermoWood process.

But there are a number of other changes occurring during the modification process that also contribute to the increased durability such as a lower level of moisture. This is a process enhancing the whole wood area enabling to use the timber for specific purposes.

Cracking of the heat‐treated wood without coating was at the same level as that of the untreated wood despite the lower moisture content of the heat‐treated wood. Prior to coating, pine and spruce boards were heat treated at 225°C for six hours under steam, in order to achieve dimensional stability and durability of wood substrate.

It is also made from FSC or PEFC certified softwoods, but treated using an acetylisation process. The Natural Resources Research Institute at the University of Minnesota Duluth has a pilot-scale kiln to research the effectiveness of thermal modification on underutilized Minnesota tree species to expand the wood markets.

Wood thermal modification takes place in high temperatures, approximately in 200 °C, and in چوب نمای ساختمان precisely controlled conditions. It is a durable and stable material that can withstand varying weather conditions well thus significantly extending the product's life cycle.

The fire spared the company's biggest asset - a $1.5 million kiln used to produce the Thermowood product that is growing in popularity among architects, builders and musicians alike. Together with our suppliers, se select and use only the raw materials that are the best suited for our production in terms of type and quality.

Thermo-timber is wood having been modified concerning its qualities by means of thermical processing (high-temparature processing). Lowered equilibrium moisture content of Thermowood makes it dimensionally stable and the material retains its shape far better than untreated wood.