Calcina Bianca MGN

Traditional White Lime Plaster

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Calcina Bianca MGN - Description

Calcina Bianca MGN is a premixed mortar based on very high-purity air lime (over 90% calcium oxide), a small percentage of natural white hydraulic lime, and washed river sands without impurities. Due to the extremely high-quality raw materials it is suitable for bio/green buildings, both internally or externally.

Calcina Bianca is an extremely breathable lime plaster, with high adhesion and a low content of water-soluble salts.

The plaster can be applied both internally and externally, by hand trowel or plastering machines, on brickwork or natural stone. It can also be applied on reinforced concrete after applying the RINZAFFO MGN base coat first. Once set, a natural lime finish, such as Calcina Fine, Intonachino Arenino or Marmorino, can be applied.

Key Features

Here are some key features of this product.

Breathable

Being a lime plaster, it's naturally vapour permeable or breathable.

No Cement. No Chemicals

This plaster does not contain chemicals or cement - it only contains natural materials.

Suitable for Listed buildings

This plaster is suitable for historic or listed buildings and heritage renovations.

Composition

Natural air lime: highest purity lime containing min 90% CaO, classified as CL90S according to EN-459-1 standard

Natural hydraulic lime NHL 3.5, 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)

0-3

Vapour diffusion resistance (μ)

Declared thermal conductivity - λ (D)

0.50

Water absorption

10.5

Adhesion (N / mm²)

0.2

Compressive strength (N / mm²)

CS II

Bulk density (kg / m³)

1450

Bag weight (kg)

Water intake (litre / bag)

Consumption (kg / m² / cm)

Application temperature (°C)

5-30

Fire rating

Chloride content (%)

None

Harmful substances

None

Colour

White

Recommended thickness (mm)

15-20

Certifications

UNI EN 998-1:2016 – Certified General Purpose Plaster for Internal / External Use (GP)

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.

Free of Harmful Substances including formaldehyde

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.

Main

Application Guide

[15-20 mm] Lime second coat, with 15 mm for internal, and 20 mm for external walls. Applied usually in 2 coats as:

█ [8-10 mm] Second coat, first half, for vapour control.
█ [8-10 mm] Second coat, second half, for vapour control.

Application Instructions

Here are some key technical points about how to apply this material correctly. Please have your plasterer read / watch the application instructions before applying the product. If any questions, please contact us, happy to help.

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.

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.

Recommended thickness: min recommended thickness for interior walls is 15 mm, for external walls is 20 mm.

Application: apply the plaster in 10 mm coats.

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).

Downloads

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

Technical Sheet

Application Guide

Certification (1)

Safety Sheet

Decl. of Performance

Statement of Origin

Completed Projects

Here are some of our projects using this plaster:

Victorian House Replastering

After Premature Plaster Failure

Residential

Solutions

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

Replastering Old Damp Walls

The Secret of Long-Lasting Lime Plastering

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Chimney Dampness Solved

Solving Chimney Discoloration & Damp

Photo Galleries

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

Old Cottage Wall Replastering

This old cottage has been suffering from rising damp for quite a while. As a result the internal plastering has been blown. The long-time fix involves the replastering of the wall with the Rinzaffo MGN Roman salt-resistant base coat, providing a building-friendly fix for several decades.

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.

RisanaSmart

Fast Lime Replastering System

Main

Base

Sanacolor 2000

White / Coloured Decorative Lime Render for External Use

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Cocciopesto

Traditional Venetian Cocciopesto Lime Plaster

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cocciopesto-deumificante-banner5-core-conservation

Cocciopesto Deumidificante

Humidity Regulating Cocciopesto Lime Plaster for Cellars

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Risanamur B80

Lime Second Coat for Basements

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ArgiLolla

Lime Plaster with Clay & Rice Husk Bio-plaster

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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.