Nodullär aggregates are round in shape with a coarse texture, off white / ivory-colored with a cellular structure inside, is pelletized and processed resulting in a light, porous, aerated modules with a tough outer shell aggregate, used for roof/heat insulation. In addition each of the Nodullär balls also acts to form of geometric barrier which helps to displace and irradiates heat over a larger surface area the air entrapped thus , reduces the rate of heat transfer compared with dense, natural aggregates. Resulting the use of Nodullär in concrete improves, (i.e. reduces) the thermal conductivity. Therefore , the thermal properties of Nodullär have been used widely to improve thermal insulation in buildings and structures.