A brief outline of the procedure: In a very complex procedure, timber is heated for several hours up to 160 to 220° C, depending on the intended use. Apart from water, resins, phenols and terpenes escape at these temperatures. From about 190°C on, even the structure of the timber starts to modify so that a new material is created. Due to this change, the timber finally gets darker in colour.
The properties achieved by this treatment are:
• Reduced swelling and shrinking
• Increased dimensional stability
• Increased resistance towards fungi (without any chemical treatment)
• Change in color towards darker shades of colors
• Better heat-insulating properties than untreated timber
• Internal stress is reduced
• Resins diffuse out and do no longer present an application problem (sauna construction)
• Due to the reduced bulk density, solidity is reduced. This has to be calculated accordingly in case a static load is applied. Areas of application for heat-treated timber: Wherever increased durability and resistance towards the weather or also a good dimensional stability and a pleasant visual effect are necessary.
Indoor application:
• Damp rooms
• Bathrooms, kitchens, saunas
• Furniture construction
• Paneling
• Ceiling lining
• Floors
Outside application:
• Garden furniture
• Façade coverings
• Windows & shutters
• Doors
• Playgrounds for children |