There are more modern methods, such as basalt wool, staple fiberglass, extruded polystyrene foam is the first durable, does not give shrinkage, and what is the main plus — it does not burn and is also environmentally friendly. Such a heater can be bought in bulk at any construction store. Vatu is better to use as a heater with impregnation, coupled with water -repellent compositions, and we recommend that you protect it with vapor barrier material (from the inside).















