But when removing the hearth, he fades.

The material looks like a porous loose mass, which is attached with a water or glue solution, spraying it with air installation. The duration of operation is at least 70 years, while protective qualities are not reduced over the years. Thanks to boric acid in the composition of the insulation, the material is not subject to fire — at a high temperature, cotton wool simply begins to secrete moisture. Environmentally friendly insulation does not melt and does not burn, it can be charged. But when removing the hearth, he fades.