19’s styrofoam brick does not require jacketing in your buildings with its high heat insulation. 4 cm thick styrofoam with a thermal conductivity value of 0.035 W / m.K is used in the internal structure of the vertical perforated insulated brick. In the tests carried out in TSE, the thermal conductivity value was measured as = 0.108 W / m.K for 19’s styrofoam insulated brick. This thermal conductivity value