It is composed of polymer bonding materials, additives, sand, cement, etc. After adding water, stirring and curing, it becomes a flexible anti-crack layer with good elongation performance. Its main function is to form an anti-crack protective layer with alkali-resistant mesh cloth. Solve the cracks caused by the inconsistent thermal conductivity between the surface protective material and the thermal insulation layer, so that the protective layer mortar has crack resistance and waterproof performance, and can eliminate the hollowing, dry cracking, peeling and other problems of the protective layer.

It is used for EPS board, XPS board, gypsum board and other boards, polystyrene particle insulation system, inorganic insulation system and interior and exterior wall decoration waterproof and crack resistance.

·Remove hollowing, shelling, floating ash and oil stains in the stucco area, properly sprinkle water to keep the wall moist, and the thermal insulation mortar should be maintained for 7 days or more.
5~7 days after the completion of the construction of the thermal insulation layer (the strength is reached by pressing the wall with the palm of your hand), and the thickness and flatness of the thermal insulation layer have passed the concealed acceptance, the construction of the anti-cracking mortar layer can be carried out.
·Before the construction of the anti-crack layer, cut the alkali-resistant plastic-coated fiberglass mesh cloth in sections according to the height of the floor, cut the mesh cloth into pieces of about 3m, and cut off the edge of the mesh cloth.
When wiping the anti-crack mortar, the thickness should be controlled at 3-5mm. After wiping the anti-crack mortar with a width and length equal to the area of ​​the mesh cloth, the alkali-resistant mesh cloth should be pressed into the newly applied anti-crack mortar immediately with an iron trowel. In the cracked mortar, the overlapping width between the meshes shall not be less than 50mm. First, press the bottom mesh cloth into the anti-crack mortar, and the lap joint should be filled with anti-crack mortar. It is necessary to press the iron trowel in the longitudinal direction of the grid cloth to finish it again to eliminate the trowel marks on the surface layer. The mesh should be pressed in so that the exposed mesh can be seen but the exposed mesh cannot be seen. 
·When the anti-cracking surface layer needs to be flattened and corrected, a bristle brush can be dipped in appropriate amount of water to brush the surface of the anti-cracking mortar before calendering, which can effectively prevent the anti-cracking mortar from sticking to the trowel. The window sill after pressing should be straight and free of burrs, and the outer corner of the window should be pressed with a trowel to rest and straighten.