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RisanaSmart MGN

Fast Lime Replastering System
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RisanaSmart MGN - Description

RISANASMART MGN is a breathable single-coat lime renovation plaster containing natural volcanic pozzolans. As a main plaster coat, it has been developed for the renovation of walls subject to moderate dampness problems or moderate rising damp when protection from soluble salts is also needed.

It allows for the quick replastering of damp walls with lime in a single coat, significantly reducing labour costs and intervention times. Once the material has dried (typically in 1 day), applying a finishing coat – e.g. any MGN finish, white or coloured – finishes the job, making possible complete lime replastering in 1-2 days. 

It does not replace the Rinzaffo MGN-based certified lime dehumidification system, which is recommended suitable for more severe or underground dampness problems (e.g. cellars) or interventions.

Key Features

Here are some key features of this product.
Breathable
Being a lime plaster, it's naturally vapour permeable or breathable.
Resistant to All Salts
This lime plaster is resistant to all types of salts (chlorites, nitrates, sulphates) and acids.
No Cement. No Chemicals
This plaster does not contain chemicals or cement - it only contains natural materials.
Extremely Long Lasting
Due to its microporous structure it blocks the movement of salts, being impervious to salts crystallization, crumbling and breakdown.
Suitable for Listed buildings
This plaster is suitable for historic or listed buildings and heritage renovations.  

Composition

  • Natural pozzolans: volcanic sands and ashes of exclusively natural origin, certified according to EN 197-1 standard
  • Natural hydraulic lime NHL 3.5, certified according to EN-459-1 standard
  • Natural river sands: washed river sands, free of salts and impurities, certified according to EN 13139 standard
  • Marble powders, certified according to EN 12620 standard
  • Hydraulic and pozzolanic binders
  • Natural plasticisers: of food / plant origin to improve workability

Specifications

Granulation (mm)
0-3
Vapour diffusion resistance (μ)
16
Declared thermal conductivity - λ (D)
0.49
Water absorption
W0
pH
10.5
Adhesion (N / mm²)
1.0
Bulk density (kg / m³)
1870
Bag weight (kg)
25
Water intake (litre / bag)
5
Consumption (kg / m² / cm)
5
Application temperature (°C)
5-30
Fire rating
A1
Chloride content (%)
None
Harmful substances
None
Colour
Dark Brown
Recommended thickness (mm)
20

Certifications

  • UNI EN 998-1:2016 – Certified General Purpose Plaster for Internal / External Use (GP)
  • Minimum Environmental Criteria (CAM) Declaration: a “green purchase” environmental declaration, indicating that this product satisfies the environmental requirements of the Italian Government, representing the best ecological solution for a project when taking into account the entire life cycle of a product from manufacturing to disposal.
  • CE Marking: this product complies with all relevant European Union regulations, meeting all performance requirements required by the CE marking.

Solutions

This material can be used in the following applications or solutions:

Videos

Here are some videos related to this solution. Please unmute the videos when playing them.

1 found

Similar Products

Here are some other similar products of the same category (e.g. other main coats or finishes). Depending on your application, you could use these as alternative products. 

Product Combinations

Although all MGN plasters can be used on their own, in many applications they perform best when certain materials are applied together as a plastering system complementing and reinforcing each other.

Here are some other plasters which are recommended to be used with this one.

Any Questions? Need Technical Advice?

If you have any questions about a project, a problem, a solution, or any of our plasters - please get in touch.

We understand that each project is unique. Using the contact form below feel free to ask us any question. Give us as much detail as you can about your project so we can get back to you with more relevant answers. 

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Application

Here are some key technical points about how to apply this material correctly:

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Base, Main

  • Clean the masonry: the plaster must be applied on a cleaned and uniformly wet substrate. All crumbling and loose parts must be removed by brushing so the masonry is free of dust, salts and oils. If possible, also wash the walls with a pressure washer; this will clean and wet the walls in one go. Close larger holes with lime mortar and pieces of bricks.
  • No salt-inhibitors nor PVA bonding agents should be used before the application of the plaster. The plaster bonds well on its own.
  • Mixing: mix the material with clean tap water only without adding anything else (no other material or additive), until a homogenous, creamy-consistency mix is obtained. 
  • Additional coats can be applied in further 10 mm increments. Use an embedded fibreglass mesh for extra reinforcement over the recommended thickness.
  • Finish options: main lime coats can be optionally left without finishing. To have a finished surface any MGN finish can be applied: Calcina Fine MGN (white lime finish), Intonachino Arenino MGN (coloured lime finish) or Marmorino MGN (Venetian Marmorino finish).
  • Painting: as this is a breathable lime plaster, wall surfaces should be painted with a breathable mineral paint. Wallpapers and modern emulsion petrol-based paints, with no or limited breathability, should be avoided.
  • Application conditions: ambient and wall temperatures must be between +5 to +30°C during application. Surfaces should be protected from rain and humidity until they have completely dried (approx. 3 – 10 days depending on weather conditions).
  • IMPORTANT: Please watch the plaster application video below before applying the material. Unmute the video if it plays without sound.