Alkali-resistant fibreglass mesh for reinforcing interior and exterior levelling compounds. Alkali-resistant Fibreglass Mesh 4x4.5 mm, 1,000 mm long for insertion as reinforcing in the first layer of Mapegum WP, Aquaflex (specially for asbestos), Mapelastic, Adesilex FIS13, Plastisol 1 and bituminous type products to prevent the formation of cracks caused by tensions generated in the substrate. Packaging rolls of 50 m.