Wood is often used as a basic or auxiliary material in construction. There are many wooden elements in traditional construction, including furniture and building fixtures, such as windows. One particular area in the production of windows is the production of fire-resistant windows, which must meet the requirements for fire and high temperature resistance. The work in this dissertation focuses on the testing of wood and its treatment as the main raw material for the production of fire-resistant wooden windows. Various types of wood were analysed for their fire resistance, which can be used for the production of these windows. In addition to the fire resistance of the wood, other parameters and components that influence the fire resistance of the windows were also analysed. Wood as the main material was tested for use in fire-resistant windows using two methods: the flammability of products exposed to direct flame with the single flame source test, in which the edges and surface of the test specimens were tested, and the hot plate test, in which the mass loss, temperature transition and thickness of the unburned area were measured. The results of the single flame source test showed that as the density of the wood increases, the damage caused by the flame exposure decreases. In the hot plate test, it was found that the burning rate was lower for softwoods, while the surface temperature was the same for softwoods and hardwoods. The species tested are listed in the following order of resistance: Robinia is the most resistant, followed by oak, Douglas fir, larch, spruce and chestnut.
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