Fire-resistant and smoke-impassable wood door

Doors are the most delicate parts of buildings' construction in case of rising and spreading fire. With all the necessary usage characteristics of doors, fire-resistance and smoke- impassability must be obtained, specially in high buildings. It's because eventuality of fire and the possibility for longer localization and evacuation of people and property and to save building of greater damage with fire-insurance means. This kind of door construction doesn't change necessary usage and aesthetic characteristic and also makes long enough fire-resistance and smoke-impassability. Basic wood material, builders' hardware, glues, lacquer etc, could be easily found. Producing and setting up are relatively simple, quick and cheap for that kind of doors.