Plaster fiberglass mesh is made of C/E glass yarn, the entire mesh was immersed in the acrylic copolymer solution to increase their resistance to alkali and abrasion. In addition, it also has a good chemical stability, high strength, flexible, crack resistance, anti corrosion, and so on. Usually, plastering fiberglass mesh with density of 50–60 g/m2 can be used to reinforcement of walls and ceilings in plastering works. However, for external insulation systems, it requires a density more than 160 g/m2. Of course, depending on the type of construction, the grams are applied differently.