Wall gridding cloth, also called glass fiber wall gridding cloth or alkali resistant glass fiber, is made of yarn raw material, by coating with acrylic copolymer solution and then drying. Gridding cloth for external walls is featured by low cost, messy layout, high resistance to alkali, corrosion and cracking, easy construction. It is a new construction material used for strengthening cement plaster wall, crack resistance and thermal insulation of external wall.