From the very first moment you see Ermoupoli, the stately capital of Syros, when you arrive at its large cosmopolitan port, you are bound to feel captivated by its architecture, a fascinating mix of Cycladic, medieval and neoclassical elements. Naturally, any restoration work in important buildings, which reflect the rich history of the city, requires the know-how to do them, as well as top quality, wear-resistant and highly specialized materials. PROLAT possesses the necessary experience and know-how, plus the best materials for this sort of works. The certified products of PROLAT are ready-to-use mortars for building and stone grouting, grouts and cement-free plasters that offer the most practical and reliable solution for construction problems requiring special knowledge and experience. In Ermoupoli, PROLAT, cooperating with specialized crews, applied Donakon, a cement-free construction mortar containing Pozzolana, to stonework as a base before spreading the waterproofing material. The same product was used for sealing before grouts, while wetting was used to avoid cracking. Finally, PROLAT used Donakon for deep grouting on the first two stories of a traditional building, while coloured stone mortar was used on the top floor. The aesthetically perfect and provenly wear-resistant result shows that, no matter how sensitive interventions and repairs are needed for special constructions of particular value, all problems can be solved when you have know-how and passion and, of course, the most advanced and suitable for each individual case materials.