Rasante Megastuk MGN

Lime Finishing for Plasterboard

Table of Content — open

Rasante Megastuk MGN - Description

RASANTE MEGASTUK MGN is a levelling / finishing plaster based on natural air lime, some natural hydraulic lime, selected sands and natural additives from rice.

Its high adhesiveness, high flexibility and excellent workability makes it perfect for use as

A levelling plaster for irregular and uneven substrates
A bridging plaster on top of reinforced concrete for subsequent MGN natural lime finishes
A highly breathable finishing plaster for plasterboards with no need for bonding agents

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

Natural river sands: washed river sands, free of salts and impurities, certified according to EN 13139 standard

Natural plant-based resin (< 3%) for improved adhesion and flexibility

Specifications

Granulation (mm)

0-1

Vapour diffusion resistance (μ)

Declared thermal conductivity - λ (D)

0.58

10.5

Adhesion (N / mm²)

0.7

Compressive strength (N / mm²)

CS II

Bulk density (kg / m³)

1559

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)

3-4

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.

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.

Completed Projects

Here are some of our projects using this plaster:

Commercial Basement Waterproofing

High Street Bank

Commercial

Solutions

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

Plasterboarding

The Right and Wrong Way

Photo Galleries

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

Project - High Street Bank Basement Waterproofing

Long-term ongoing gutter leaks and lack of maintenance have ruined several walls of this building. Being a Victorian building, the waterproofing of the basement has been resolved with breathable lime-based materials.

Videos

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

Flexible breathable traditional lime finishes for fibreboard

Solutions

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.

Coloured Lime Finish (24 colours)

Finishing

Rasante B40

Levelling-Finishing Lime Plaster

Finishing

Rasante B2007

Water Repellent Finishing Plaster for External Renders

Finishing

Rasacol

Lime Finish for Thermal Plasters

Finishing

Venetian Marmorino Finish

Ultra-High Quality Venetian "Marble" Finish

Finishing

Application

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

Finishing

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.

Recommended thickness of the finish: 3-4 mm. For best results, the finish should be applied in two “half-coats” of 2 mm each, with a fine 3-4 mm fibreglass mesh embedded in-between. The mesh makes the finish more flexible, minimizing the appearance of fine cracks.

Various textured finishes can be achieved, depending on the finishing technique used:
- Coarse finish: by finishing the surface with a sponge or wooden trowel.
- Smooth finish: by using a stainless steel trowel, compressing and smoothing the semi-dry surface, the sand granules are pushed into the material, resulting in a smooth finish.
- Washed finish: by finishing the surface with a sponge trowel. After the surface has hardened, the surface is washed with water and blotted with a sponge to bring out the aggregate, its specific texture and colour.

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).