Heraklite wood wool is one of the best sound insulation and acoustic treatment product. Wood wool have cement and poplar with wood fibers. After the two materials are mixed and pressed, they are passed through the machines in order to give the desired size and thickness and the usage is made ready. In addition to providing sound insulation, there is the ability to be able to function as a heat shield and to protect it during a possible fire. As a result of the tests and tests made according to national and international standards, it is determined that the cementitious wood wool insulation board is not flameresistant and that if it is forced, it is burned by ash so as to form smoke with minimum flame effect, does not form flaming drips, does not flow.