Fire Retardant
Decay Resistant

Our team has invented a method for production of fire retardant and rot resistant lumber by impregnation of wood with chemicals inside the vacuum chambers.


Wood is the most popular and widely used construction material. Wood is inexpensive and convenient building material. Millions of power line poles, sleepers and piles in low-rise construction are installed every year around the world. However, wood is flammable and susceptible to rotting.

Meeting building fire codes, especially for buildings in high-density areas, is one of the most crucial steps in completing the building construction process. To improve overall building safety and ensuring building codes are being met, contractors are increasing their use of fire retardant wood for projects.

To prevent rotting, impregnation of wood with antiseptics and chemicals is used. 

Our invention provides the method for producing fire retardant, decay and moisture resistant lumber, and production line for its implementation, achieved by combining a treatment chamber and other technological components in one production line, resulting in possibility of carrying out a multi-stage lumber treatment within the same treatment chamber, by using water-insoluble natural mineral raw materials to impart refractory, decay and moisture resistant properties to the lumber by impregnation through a two-stage process, consisting of converting the insoluble natural mineral, e.g. magnesite, into the wood impregnating solution, followed by transforming the dissolved mineral inside the wood capillaries into an insoluble heat, decay and moisture resistant material.