Fiberglass mesh with 4x4mm mesh opening and 90gr/m² weight. It is necessary for integrated reinforcement of cementitious waterproofing coatings and resinous spackling putties for cement boards. Distinguished for its resistance to alkaline environments. Offers significant structural reinforcement and protects from capillary cracks resulting from temperature variations. Reinforces and bridges cementitious waterproofing coatings on balconies, roofs and pools, as well as reservoirs and water towers.