In different materials outside will be a layer of plaster, if ordered metal mesh, plastering directly on the surface of the material, such as thermal expansion and contraction will make plaster telescopic uneven cracks, some impact on building sense
If the next material cold shrinkage, which is bound on the side shrinkage and small material influence. At the same time
Different materials, thermal expansion and contraction degree is not the same, like gas heating volume is increasing, while the iron heating volume changed little
