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MGN — The Art of Plaster since 1980

This is the MGN gateway to the english speaking world

For over 40 years, MGN has been analysing and recreating traditional lime plasters and mortars found in historic buildings across Rome, Venice, and other historic sites in Europe.

Welcome to MGN

MGN was founded on the extensive experience of master craftsman Naldo Busato, who has been producing plasters and mortars based on traditional formulations for over 40 years. By combining practical expertise, important academic and professional collaborations, and modern production technologies, he has developed a range of materials with unique and highly specialised characteristics.

The company specialises in the production and faithful reproduction of traditional plasters and mortars for building conservation and specialist applications. MGN products are also widely used in new construction, where they contribute to high-quality, comfortable and healthy living environments.

MGN’s product range includes: dehumidifying plasters, cocciopesto-based plasters, through-coloured decorative plasters, thermal insulating plasters, natural marmorino finishes, mortars for bedding and pointing, structural consolidation mortars, cocciopesto screeds, and materials for Venetian terrazzo and pastellone applications. All products are manufactured and certified in accordance with current regulations.

Introducing Cocciopesto to the UK

Cocciopesto is a high-performance lime plaster with a history of more than 2,000 years, combining material science, traditional craftsmanship, and timeless aesthetics.

It is produced by blending slaked lime with finely crushed terracotta, typically derived from broken tiles, bricks, or pottery. This mixture creates a distinctive warm pink to rust-coloured surface that is both visually appealing and highly durable, while remaining highly vapour permeable.

Its performance is based on chemistry. The powdered terracotta reacts with lime in a pozzolanic reaction, creating a hydraulic set. As a result, cocciopesto can harden even in damp conditions and develops natural tolerance to moisture.

For this reason, the material was widely used in Roman construction, including baths, cisterns, floors and wall plasters, particularly in areas exposed to moisture.

Featured product categories

waterproofing

Thermal insulation

Cocciopesto heat storage floors

Natural building solutions for lasting protection, comfort, and performance.
Waterproofing, thermal insulation, and Venetian floors


— engineered for healthier spaces.

The story of mgn

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.

NALDO BUSATO

Founder of MGN

Waterproofing lime plasterRinzaffo MGN

stops moisture at its source while keeping walls breathable and durable.

 

EWI & Internal Wall insulationTermorasante Aerogel MGN

delivers exceptional thermal insulation without sacrificing breathability.

Our Customers say

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.

Greg B.

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.

Edmund H.

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.

Hamidah S.

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.

Jonathan T.

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.

James S.

Builder, South London

ALL THE SOLUTIONS FOR OLD & LISTED BUILDINGS

Preserve the past. Improve the future.
Natural lime solutions that respect original materials
while enhancing building performance.