Marmorino Classico - roman plaster

MARBLE PLASTER / SERIES 947

Based on a lime-based natural mineral binder, for outdoor and indoor finishes similar to the plasters found on older Roman buildings, with shaded color effects that vary depending on how they are applied. Resistant to aggression by atmospheric agents, high breathability, especially for restoration projects, including buildings of historical-artistic interest. Superior alternative plaster finish and more cost effective than typical gypsum plasters. High breathability, absorbs toxins, prohibits bacteria that forms mold.

Trowelled decorative outdoor and indoor mineral based coat.

• Indicative Spreading Rate: 400 - 500 squarefoot with 1 coat
• Number of Coats: 2
• Granulometry: 0.05 mm Max
• Tools: Stainless-steel/plastic trowel and sponge
• Dilution: Ready to be Used
• VOC: 0% - 1.85% With Maximum Colorant Added

TECHNICAL DATA SHEET

DESCRIPTION
MARMORINO CLASSICO is a masonry covering for exteriors and interiors, with a mineral binder base, which enables a finish to be obtained which closely resembles that of the antique plastering to be found in the buildings in Venice. The product appears different each time it is applied, characterized by tones and chromatic effects which depend on the skill and characteristics of the decorator.
MARMORINO CLASSICO creates a rather thick coat offering outdoor resistance and featuring a high level of permeability. The product proves particularly suitable for restoration work, even for buildings of particular historical and artistic interest.

INSTRUCTIONS FOR USE
May Be Applied On:

•  New and old plasters based on hydraulic binders.
•  Old paints and wall coatings that are mineral in nature, dry, compact, absorbent and cohesive.
•  Mineral conglomerates of various kinds, as long as they are absorbent.
• Surfaces should be adequately prepared by following the instructions given in the paragraph ‘PREPARING THE SURFACE’.
  

Do not apply on freshly painted surfaces.

•  To improve the adhesion of the MARMORINO CLASSICO on old synthetic paint is appropriate to apply one coat of MARCOSIL GRIP 9310019.
•  It is not recommended for use on outdoor concrete surfaces since, due to its high permeability, the product has no protective powers against the aggression of carbon dioxides, the leading cause of concrete degradation.
  

TECHNICAL SPECIFICATIONS

•  Type of binder: air-hardening lime
•  Solvent: water
•  Maximum granulometry of quartz: 0.7 mm
•  Viscosity per UNI 8902: paste
•  Water permeability per UNI EN 1062-3: medium, w=0,20 kg/m²h^0,5
•  Water vapor permeability per UNI EN ISO 7783-2: high, Sd=0,08 thickness of 0,7 mm
•  Drying times (at 25 C and 65% R.H.): touch dry in 2-3 hours; coatability after 12 hours (depending on the thickness applied).
  

PREPARING THE SURFACE
Plaster Surfaces:

•  Make sure that the surface is thoroughly dried and aged. Resurface or consolidate using specific products if necessary.
•  If mold is present, treat the surface with COMBAT 222 cleanser code 4810222, and with COMBAT 333 reconstruction code 4810333.
•  Brush or wash to remove any efflorescence and any old peeling paint. Completely eliminate any raised layers of lime-based or tempera paints.
•  Remove any dust, smog or other deposits by brushing.
•  Cracks both indoors and out must be suitably widened and filled with filler or similar products.
•  Smooth if necessary with RASAMIX 9440160 or with BETOMARC 9450150 or RASOMARC 9500150 according to the type of support.
•  Only in the case of particularly flaky surfaces should a coat of IDROFIS 4700006 acrylic water-based wall fixative or ATOMO 8840001 micronized solvent-free fixative.
•  In presence of non homogeneous surfaces, with old paintings, fillers, patches, to even the covering support with water soluble covering fixative MARCOTHERM PRIMER 4740019 .
•  Proceed with the application of MARMORINO CLASSICO according to the procedures described under "Application instruction".
  

APPLICATION INSTRUCTIONS

•  Since the drying and carbonation of MARMORINO CLASSICO, like all lime products, are highly susceptible to the temperature and humidity levels, it is advisable to apply the product when temperatures are in the range +10 °C to +35 °C and the relative humidity of the air <75%.
•  Avoid applying the product in direct sunlight.
•  Following the application, exterior surfaces must be protected from rain and damp until the product is completely dry, which normally occurs (at 20 C) after approx. 72 hours.
  
• The exposure to the atmospheric agents, rain, high humidity, lowland temperature acclimatizes them, of the surfaces with lime finishes, can generate phenomena of whitening finishes during the carbonatization process. Such phenomenon can turn out irreversible in particularly extreme conditions.
•  If the surface does not require the fixative, it is nonetheless recommended to dampen it to prevent the wall from drawing an excessive amount of water from the binder.
•  Tools: stainless steel / plastic trowel, sponge, brush.
•  N. coats: at least 2 coats of product must be applied to prepare the undercoat.
•  Thinning: ready to be used.
•  Being mineral based product, MARMORINO CLASSICO can increase the viscosity durin the storage; to get the original appearance is enough to stir it with a mechanical instrument, eventually adding 1% max. of water.
  

Application Procedure:
* To obtain the “marble-type” finish:

•  Tools: stainless steel or plastic trowel.
•  Fill and level in order to provide an even surface;
•  After 12 hours, apply an additional coat of product to obtain a suitable thickness;
•  As soon as the product applied starts to stretch, apply small amounts of material, wet on wet, compressing the surfaces and compacting them in order to fill any points of porosity.
•  Once finished, proceed with polishing.
  

* To obtain the coloured roughcast finish:

•  Tools: stainless steel/plastic trowel and sponge plastering trowel for finish.
•  Fill and level in order to provide an even surface;
•  After 4-5 hours, apply an additional coat of product to obtain a suitable thickness;
•  As soon as the product applied starts to stretch, commence finishing using the sponge trowel (do not wet the surfaces being worked on).
•  When brushing on, thin the product with water at 10%.
•  Tools should be cleaned immediately after use with water.
•  Indicative spreading rate: 2.5-3 kg/m2 based on 2 coats on smooth surfaces featuring average absorption. It is advisable to determine the actual spreading rate by performing a preliminary test on the specific surface.
  

TINTING
Colors are obtainable via the Marcromie color matching system and using COLORADO series 548 colorants alkali resistant.When using multiple batches it is recommended to remix the various products together to avoid slight differences in shading.
For outdoor tasks it is a good rule of thumb to always use material from the same batch, from corner to corner. For tasks where it is unavoidable to continue on a wall with a different batch, do not place the batches contiguously. For the transition point, use any interruptions in the continuity of the surface: moldings, corners, cables, etc.

STORAGE
Maximum temperature for storage stability: +30 °C
Minimum temperature for storage stability: +5 °C
Stability in the original closed containers stored at suitable  temperatures: 2 years.

SAFETY RULES
Limit value EU (Dir. 2004/42/EC)
Cat . L : Decorative effect coatings (water-base) : 300 g/l (2007) / 200 g/l (2010)
MARMORINO CLASSICO Contains max: 30 g/l VOC; R36/38 Irritant for eyes and skin; R41risk of serious damage to eyes.
S2 Keep out of the reach of children; S39 Protect eyes/face; S26 in case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
The product must be transported, used and stored in accordance with the standards in force regarding hygiene and safety; let the residues dry out completely and treat them as special waste. Consult the safety sheet for additional information.

SPECIFICATION ITEM
Applications, on previously prepared surfaces, of MARMORINO CLASSICO mineral masonry covering series 947, with air-hardening lime base, with the
application of at least 2 coats, characterized by an a water vapour permeability UNI EN ISO 7783-2 high and water permeability UNI EN 1062-3 medium.
Supply and installation of material....................per m2.
COLORIFICIO SAN MARCO guarantees that the information herein is provided to the best of its technical and scientific knowledge and based on its experience; nonetheless, the company may not be held liable for the results obtained using these products, as application conditions are beyond its control. It is recommended to always make sure that the product is suited to each specific instance. The present sheet voids and replaces any previously existing sheets. For further technical information call the technical service +39 041 4569322