Among the insulation materials that are sealants, installation foam is most popular. It includes chemicals that are produced from raw oil, catalysts, substances that have anti -gun and refractory properties, and gases – fillers. These substances react and form polyurethane foam, which is contained in the foam. The mounting foam can be classified according to the chemical composition into one -component and two -component. In the first case, the substance reacts with moisture from the surrounding air, then increases in volume and becomes solid. The composition can harden for almost a day. Recently, the construction of a turnkey sauna is often carried out in more detail about this will not be superfluous about this.
To reduce this time, additional moisturizing the surface is necessary. Since the substance inside the cylinder is unstable, and chemical reactions are difficult to control, the shelf life of such a foam is very short. In professional construction, structural foam. It includes two chemical isolated substances. They react only when the foam is activated. The time of hardening and hardening is much less. Such a foam cannot be used again, so it is used in the performance of large -scale work.