Reinforced strengthening for: a) Mapelastic, Mapelastic Smart, used for waterproofing terraces, balconies, swimming pools, baths, shower cubicles, etc. with ceramic tile or stone finishes; b) protective, flexible smoothing layers of Mapelastic, Mapelastic Smart, applied on internal and external cementitious substrates with micro cracks; c) particularly stressed areas in waterproofing layers made using Mapegum WPS when used to form anti-fracture membranes on internal screeds and walls with micro cracks;