delivers exceptional thermal insulation without sacrificing breathability.
Welcome to the official UK website of MGN Italy.Â
MGN was born from the extraordinary experience of master craftsman Naldo Busato, who has been producing plasters and mortars according to ancient Roman formulas for over 40 years. He has combined a unique blend of practical knowledge, important professional collaborations and cutting-edge technologies to create a range of products with inimitable characteristics. The company specialises in the production and reproduction of various types of plasters and mortars for restoration and renovation. MGN products are also suitable for new constructions, ensuring high-quality living comfort.
MGN’s production includes: dehumidifying plasters, Cocciopesto-based plasters, coloured plasters entirely in the mass, thermal plasters, natural Marmorini, mortars for bedding and pointing, consolidating concrete, cocciopesto screed, supply of plaster for the application of Venetian terrazzo and pastellone, certified in accordance with current regulations.
Cocciopesto is a 2,000-year-old high-performance plaster that blends chemistry, craft, and timeless aesthetics.
It is made by mixing slaked lime with finely crushed terracotta (broken tiles, bricks, or pottery). The result? A warm pink-to-rust surface that’s not just beautiful—but remarkably durable and breathable.
What makes it special is chemistry: the powdered ceramic reacts with lime in a pozzolanic reaction, creating a hydraulic set. That means cocciopesto can harden even in damp conditions and becomes naturally water-resistant. The Romans used it in baths, cisterns, floors, and walls—anywhere moisture was an issue.
Natural building solutions for lasting protection, comfort, and performance.
Waterproofing, thermal insulation, and heat-storing lime floors
—engineered for healthier spaces.
Naldo Busato's mastery is a family affair: since childhood, he has visited construction sites with his father, Felicetto “golden hands”, a bricklayer and restorer from Vicenza.
Accompanying him to work, at the age of 9 he visited Villa Porto in Dueville, which at the time needed restoration work on its plasterwork and frescoes. This was his first encounter with Palladio. Palladian villas are a familiar feature of the Vicenza landscape. They seem to emerge here and there from the countryside, like a legacy of a splendid past, faded by the weight of centuries and yet still full of splendour and, above all, repositories of ancient craftsmanship. The encounter with such majestic architecture and technique had a profound effect on Naldo, even though he was only a child. Finally, at the age of 11, he received a special Christmas present: a huge jute sack containing a restorer's tools: trowels, small trowels, wooden floats... His destiny was sealed, and a passion was born that would become his profession.
Naldo took his first steps in the world of restoration guided by his father's teachings: master craftsmen traditionally passed on their skills and knowledge in this way, from father to son. He began working alongside him on building sites: villas, churches...
He learned how to mix mortar with a pickaxe, how to prepare a pit of quicklime, and the techniques of fresco painting and dusting. It was a true apprenticeship of yesteryear, his task being to learn everything his master had to teach him. It was precisely this drive to seek out and absorb techniques and methods that were dying out (replaced by the new way of building during the economic boom) that would characterise Naldo Busato's entire career from then on.
One day, a craftsman specialising in marmorino plaster, but with no children to pass on the trade to, asked Felicetto for a “borrowed son” to take into his workshop, and Naldo was chosen from among the Busato brothers. 'Give me the most passionate one, so that I can teach him everything I know and thus continue my story'. And the most passionate one, of course, was Naldo: he changed master and workshop, ready to learn more and further perfect his technique.
The moment when Naldo Busato is put to the test, when he realises that he has learned everything there is to know for the time being, comes when he is 15 years old. He is working on the restoration of a church. The fresco painter called in to do the paintings needs someone to lay the groundwork on which he will then paint, and of all the builders in the company, he chooses Naldo: he is the son of a master craftsman, so he should be a safe bet... but will that be enough? No, he is put to the test anyway: first, he is questioned on the materials and techniques he knows, then it is on to the practical side, with an application test. He passes the test with flying colours (attracting the envy of his senior colleagues, but not for his technique) and is entrusted with the task of preparing the base for the fresco, marking it with a nail and dusting the design, until he is ready to paint the sky and the cloaks on which the painter's work will then be grafted.
Between the late 1970s and early 1980s, Naldo Busato, thanks to his talent, began collaborating with shipyards in Venice, where there was a real boom in restoration work. It was a professional success: in 1980, he founded MGN and had the unique and extraordinary opportunity to learn the ancient traditional Venetian application techniques directly from the last Venetian masters.
MGN was born out of the need to recreate natural lime plasters for the restoration of historic buildings and distribute them in premixed form: it would be the first company in Italy to supply customised materials by reusing the original raw materials. However, waiting for him in Venice was also the immense experience of the last true local masters, whose immense technical skills were on the verge of being lost. Many of them, having no one to pass on their craft to (a reflection of social change: their children, instead of following in their fathers' footsteps, often took other paths), were desperately looking for someone to teach it to, so that their work and knowledge would not die out. The professional peak of a master craftsman is not only achieved through personal fulfilment, but also by passing on one's knowledge and leaving behind apprentices: the last Venetian masters found an heir in Naldo, and his expertise was also enriched by their practical techniques.
The need for new, higher-performance materials was growing. Naldo Busato undertook various research projects together with the Superintendency, the Milan Polytechnic and a researcher from Naples: by studying Roman mortars, he finally succeeded in creating a restorative material that was truly durable and able to withstand the harsh conditions in Venice. His Venetian experience led him to collaborate directly with the Superintendency and its laboratory: today, science also plays a fundamental role in ancient restoration, and Naldo Busato enthusiastically welcomed this new possibility. His research into restoration techniques for dehumidifying masonry began in Venice and was based on local needs. A collaboration with the Politecnico di Milano led to research into Roman mortars, which were studied directly on site by researchers. Through material testing, numerous attempts were made in the laboratory to reproduce them. However, the first important breakthrough came in 1985: a researcher from Naples, an expert on pozzolans, explained the technical and scientific properties of Roman mortars to him, illustrating them directly on buildings during a visit to Pompeii. It was on the basis of this knowledge that Naldo succeeded in creating a long-lasting restoration product. In Venice, many construction sites built during those years are still intact: where the product has been applied properly, it can last up to 80 years.
Andrea Palladio's creations, things had changed considerably compared to many years earlier: now he was the one working on site, backed by years of experience and the support of modern material analysis techniques... in a short space of time, he found himself restoring numerous villas,
reproducing the original materials. The rigour of historical reconstruction has given rise to products such as Nigra Padoana, one of the plasters used by Palladio, which is still in the catalogue today.
In the 1990s, it was a short step from Venice to the rest of Italy: Bari, Naples... Following his products from creation to application, Naldo Busato constantly sought out the local old masters, further expanding his knowledge. The result of this journey is an enormous wealth of technical application expertise, an ancient knowledge that is now condensed into the excellence of MGN products.
In 2003, the MGN laboratory was established, entirely dedicated to the analysis of materials and formulas and accredited by Accredia. It was strongly desired by master Busato: after relying on external laboratories and that of the Superintendency during his years in Venice, he knew how important it was to test a product in all conditions. It was a step towards the future, dictated by the essential need for better, more durable and sustainable materials.
Protect from moisture. Preserve warmth. Store natural heat.
Advanced lime-based systems designed for durability and energy efficiency.








stops moisture at its source while keeping walls breathable and durable.
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delivers exceptional thermal insulation without sacrificing breathability.
West Sussex
The building was erected around 1700 and originally functioned as a watermill. Whenever we have heavy rainfall — like earlier this year — the water can rise by up to six feet in 12 hours, flooding the building. The work was carried out over the last six to eight weeks, and we applied Rinzaffo MGN plaster to the walls. After the winter flood, of course, we had water backed up against it again. As soon as the water level dropped, you wouldn’t have been able to tell — there was no trace or watermark on the plaster, and the wall dried out completely.
Old Mill in Wales
I’ve renovated over 20 properties, and this one is a five-storey Georgian house, Grade II listed, built around 1790. The walls were taken back to the original brickwork and treated with Rinzaffo MGN, followed by Calcina Bianca MGN and a top coat. I must say, these lime plasters are a much better way of treating a very old, much-loved building.
Developer, Central London
(This is a job for builder Jonathan, on his own old farmhouse) We have done a lot of renovations on listed and old dwellings. Rinzaffo MGN, this particular basecoat is a waterproof, watertight lime render. It does everything we want and allows the building to breathe. It goes hand in hand with the lime work inside.
Builder, Shropshire
I grew up in a small village in Essex and worked on plenty of barns, farm buildings and cottages — they’ve all got their own character. I’ve always liked lime, to be honest. I’ve been using Rinzaffo MGN and yeah, it’s a really nice material. It stops the salts and moisture coming back through, it’s environmentally friendly, and it lets the house breathe. It’s just a good material to work with.
Builder, South London
It’s a 100-year-old building, and there was a lot of black mould in the corners — almost a metre high. The walls weren’t breathing, so we had condensation and water running down them. It’s a solid brick wall and there was no thermal insulation at all. We applied a basecoat and 4 cm of thermal insulation. It retains heat much better now and the difference is noticeable — it’s a lot warmer. We now have a breathable wall and shouldn’t have those issues anymore.