Wooden Doors - Windows
Wood is the oldest material used to make window frames. As a material it is ready for nature, it is robust, has very good mechanical properties and considerable durability. So even today, the wooden frames are very useful for the construction and renovation of the buildings. For the construction of frames it is possible to use any kind of wood, provided that the wood is unencumbered and does not show cracks, distortions, large or dense knots, irregular or sparse rings, intense color differences or other physical or technological anomalies. The moisture content may not exceed certain limits depending on the type and use of the frame. The resistance of wood to pests, insects, fungi, moisture or other harmful agents should be improved by impregnation with appropriate substances.