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Betoncino Consolidante MGN

Lime Structural Consolidation Mortar
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Betoncino Consolidante MGN - Description

BETONCINO CONSOLIDANTE MGN is a premixed structural reinforcement and consolidation lime mortar, suitable for the consolidation of all types of deteriorated or damaged walls – brick, stone or of mixed construction – which require heritage-friendly physical reinforcement.

With high water and salt resistance, it is suitable for applications in very damp environments, such as masonry affected by rising damp and accompanying salinity problems. It can be used as a bedding plaster, being suitable for the rebuilding of damaged, weakened or partially collapsed walls with missing stones or bricks. It can also be used for plastering and rendering works.

Composed of only natural lime based materials, Betoncino Consolidante MGN is compatible with all traditional binders and mortars used in the construction of historic walls.

It can be combined with fibre-reinforced polymer (FRP), fibre-reinforced cementitious matrix (FRCM), steel, carbon and other meshes and structural consolidation systems.

Protecting Joists and Timber Elements

Joists and timber beams are often structural elements or have some sort of structural function. Being in contact with the masonry (e.g. joist ends), they can be subject to excessive moisture from damp walls.

The Betoncino MGN Roman structural mortar works well with timber, protecting timber elements from liquid moisture while allowing them to breathe and stay dry, free from rot.    

joists-core-conservation
Timber joists embedded in Roman structural lime mortar, allowing the timber to breathe

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.
Versatile
It has multiple uses: It can be used as a plaster, as a render, in basements or in lime floors - anywhere where water and salts are present and a long service life is required.
Suitable for Listed buildings
This plaster is suitable for historic or listed buildings and heritage renovations.  
For Structural Consolidation
This plaster is suitable for the structural consolidation of old historic or listed buildings.  
For Cellars, Basements
Can resist high humidity, suitable for cellars, basements.

Composition

  • Natural air lime: highest purity lime containing min 90% CaO, classified as CL90S according to EN-459-1 standard
  • Natural volcanic pozzolans: volcanic sands and ashes of exclusively natural origin, certified according to EN 197-1 standard
  • Natural hydraulic lime NHL 5, certified according to EN-459-1 standard
  • Marble powder: certified according to EN 12620 standard
  • Natural river sands: washed river sands, free of salts and impurities, certified according to EN 13139 standard

Technical Data

Granulation (mm)
0-4
Vapour diffusion resistance (μ)
15
Declared thermal conductivity - λ (D)
0.86
Water absorption
W0
pH
10.5
Adhesion (N / mm²)
2.8
Compressive strength (N / mm²)
CS IV
Bulk density (kg / m³)
1780
Bag weight (kg)
25
Water intake (litre / bag)
5
Consumption (kg / m² / cm)
16
Application temperature (°C)
0-30
Fire rating
A1
Chloride content (%)
None
Harmful substances
None

Certifications

  • UNI EN 998-1:2016 – Certified General Purpose Plaster for Internal / External Use (GP)
  • UNI EN 998-2:2016 – TUV Italy Certified Mortar with Guaranteed Performance in Elements Subject to Structural Requirements
  • Green 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.

Work Specifications & Application

Here are the recommended work specifications for this plaster.

betoncino-main-core-conservation

Base, Consolidation, Flooring, Building

[20-40 mm] Structural Consolidation lime plaster, in 20 – 40 mm or more thickness, applied as:

  • â–ˆ [10 – 15 mm] Consolidation plaster, coat 1
  • â–’ [Mesh] Structural reinforcement mesh (20 x 20 mm, 40 x 40 mm): embedded between coats for additional reinforcement and flexibility.
  • â–ˆ [10 – 15 mm] Consolidation plaster, coat 2. Etc.

Application Instructions

Here are some key technical points about how to apply this material correctly. Please have the applicators read / watch the application instructions below before applying the product.

  • 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.
  • Salt-inhibitors or PVA bonding agents are NOT needed and should not be used before the application of this plaster. This natural lime plaster bonds very 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. 
  • IMPORTANT: Dry to wet mixing: plasters with hydraulic ingredients should always be mixed from dry to wet (workable) state. Add your powder to a bit of water, start mixing and gradually add more water till the right consistency is reached. This is the right way. Mixing the other way – wet to dry mixing – by starting with lots of water then gradually adding powder to the right consistency, is incorrect. Reason: excessive wetting weakens the plaster, alters its hydraulic set resulting in less performant, more friable and shorter lasting plasters.
  • Application: apply the plaster in 10 mm coats.
  • Light key: give the plaster a light key using a wet brush. Do not cut into the material with the edge of a trowel.
  • Additional coats can be applied in further 10 mm increments. Use an embedded fibreglass mesh for extra reinforcement over the recommended thickness.
  • Drying time: the plaster dries quite quickly, typically in 1-2 days, depending on ambient conditions. Once it has hardened, the next coat can be applied.
  • 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).

Downloads

Here are some key technical documents (spec sheets, application guide etc.) about this plaster.

Certification (2)

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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Completed Projects

Here are some of our projects using this plaster:

Solutions

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

Photo Galleries

Here are some photos demonstrating this solution. Click on any image to open the photo gallery.

Similar Category 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.