Document type Technical Data Sheet

Name Marmoretto MEDIUM

Description Natural, lime-based material for decorative finishes on interior and exterior wall

surfaces. Naturally anti-mould and breathable. This Venetian plaster has medium-grain

size, and therefore medium gloss and trowel movements, with gentle chiaroscuro

effects.

Composition Aged, slaked lime and selected marble powders

Grain size 400 microns

Appearance Paste

Colour White, it can be tinted in any colour with lime-compatible colourants

Packaging 24 kg net polyethylene containers

16 kg net polyethylene containers

Application By hand, with a steel trowel

Type of Surface and

priming

Interior and exterior walls. Also suitable for walls of wet areas such as showers and

saunas.

New Wall Surface

Plaster: no priming necessary

Gypsum / Plasterboard / Medium Density: one coat of QUARTZ PRIMER

Old Wall Surface

Plaster: one coat of QUARTZ PRIMER

Fast drying / Limewash: brush down and apply one coat of QUARTZ PRIMER

Polished Lime: Abrade, brush down and apply one coat of QUARTZ PRIMER

Washable Paint: one coat of QUARTZ PRIMER

Dilution Ready to use

Consumption 2 kg / m2 after three coats

Drying 3 hours at 20°C / 68°F to the touch

48 hours at 20°C / 68°F below the surface

180 days stable

Application temperatures min 5 max 30°C – R.U. < 85% ca

Coat Thickness 1.1 – 1.6 mm after a total of 3 coats

VOC Classification EU Directive 2004/42/CE: EU limit value for this product (cat A/l – water-based

decorative effect coating): 200 g/l (2010). This product contains less than 1 g/l of VOC.

Specific Weight 1.4 ± 0.2 (kg/l)

pH after 30 days 12.5 ± 0.50

Vapour Permeability SD ~ 0,04 m (DIN 52 615)

Flammability European Class of Reaction to Fire A1: non-combustible, no contribution to fire

Mould Resistance ASTM D 3274 – “Standard Test Method to evaluate the degree of surface

disfigurement of paint by microbial, fungal and algae growth.

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Result: Front Panel 10/10/10 Back Panel 10/10/10 = no growth

Scrub Test Resistance ASTM D 2486-06 method A = was used: scrubbing fine sand + metallic brush for

10,000 cycles

Impact Test UNI EN ISO 6272-2-2006. 1 kg doming punch was dropped from different heights and

only at the height of 8 cm., it left a 5.5 mm. dent in the surface and a tiny crack

appeared around its circumference.

Pencil Hardness ASTM D3363- Pencil hardness 5H

Shore Hardness Norm ASTM 2240 average

Adhesion Norm UNI EN 13892-8 2004 average value = 2,0

Shelf life 36 months when stored according to the recommended guidelines

Storage In original sealed packaging between 5° - 35°C in a dry, dark environment

Safety Norms Irritating. / Risk of serious damage to eyes. / Irritating to the skin. / Keep out of children.

/ Avoid contact with eyes. / In case of contact with eyes, clean immediately with water

without rubbing them, and consult a doctor. / Wear suitable gloves and eyes / face

protection. / In case of ingestion of the products, consult immediately a doctor showing

him the can or the label of the product. Danger labelling under directives 67/548/EEC

and 1999/45/EC nd following amendments and adjustments. The product must be

transported, used and stored according to current standards of hygiene and safety.

Disposal Product must be disposed of according to norms and regulations in force. Containers

must be sent for recycling. Follow directions on the packaging

Application Instructions WARNINGS

Water on the surface of the material in the bucket is normal and should be removed

before use or addition of colourants. All lime-based products lose their viscosity when

mixed and need a period of 6/12 hours after mixing to regain their density. This

product is dense, and ready for use; thus it may be necessary to use an appropriate

drill attachment to stir for a few minutes to reduce viscosity. Choose the colour and

add the toner additive to the container and continue mixing until a homogeneous shade

is obtained. Let the product rest for about 5 hours before you begin to use it.

We recommend using materials from the same production batch for the same project.

If you must use different batches, we suggest mixing their material together to avoid

any slight variations in shading.

To ensure proper usage, dilution, and application of the products mentioned in these

pages, please consult the corresponding technical data sheets.

When preparing the surface and applying the materials, we advise using appropriate

tools and personal protective equipment (PPE).

During application and for the following 72 hours, protect the surfaces from sudden

temperature change, direct sun light and water. Don’t apply in temperatures below 8°C

or above 35°. During application make sure that the work area isn’t too damp to avoid

problems with application times.

Remember to have a strong light parallel to the wall and situated on only one of the

two sides of the wall you are working on (usually on the same side as other sources of

light such as windows). In this way the shadow of the trowel allows you to see the

actual state of the finish. Every so often, during the second and third coat, the light

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should be moved so that the wall doesn’t dry out too much in one spot from the heat of

the lamp.

APPLICATION

Protection of the work area: Masking tape and protective material over the baseboards

and around windows and doors.

Marmoretto Medium  should be applied to plaster (rough or smooth, new, or not

insulated). Already painted surfaces require a thorough brushing down to remove dust

and uneven parts. Where necessary, use a brush or roller to apply a coat of QUARTZ

PRIMER diluted with water up to about 30% in volume to be used, ca. 150-200

gm/sqm, or UNIVERSAL PRIMER diluted 1 to 7/8 with water. Apply at least three coats

of Marmoretto Medium with a steel trowel.

1) First coat of Marmoretto Medium: use approx. 800 g/sqm. This coat is applied

directly to the plaster, taking care to apply it evenly so as to smooth out any

imperfections in the ground. This coat must not be to be polished or you will face

problems of low adhesion or detached product when applying the final coat.

2) Second coat of Marmoretto Medium: Begin applying only after the first coat is

dry. Use approx. 800 g/sqm, taking care that the surface is as smooth and ridges-free

as possible, but DO NOT POLISH as this will cause problems for the adhesion of the

final finish coat.

3) Third coat of Marmoretto Medium: Use approx. 300 g/sqm. Apply before the

second coat is completely dry, that is WET INTO WET, so that the granules of marble

penetrate the previously applied coat. After this, proceed with the final smoothing and

polishing. For greater polish, go over the surface repeatedly with a trowel.

EXTERIORS: For exterior applications there are some rules to respect and some

precautions to take. We remind you that carbonation, i.e. the process that takes place

through the absorption of atmospheric CO2, is completed in a few hours on the surface

but takes several days to take place in depth. It is therefore important that the

application takes place in the certainty of the absence of heavy rains in the three

following days. It is also not recommended to apply it on walls that do not have at least

a small roof overhang. Penetrating rain could ruin the finish even after weeks as deep

carbonation is completed after more than a month. Avoid windy days, especially at high

temperatures, as well as the risk of frost in the 48 hours following application. In

external applications in hot climate conditions, it is also recommended to protect the

wall from the sun with shade cloths applied to the scaffolding. Lime-based products

must dry slowly to better fulfil their characteristics.

Finish Protection INTERIOR: BEESWAX / MINERAL WAX / MARSEILLE SOAP / HYDROCALCE

EXTERIOR: MARSEILLE SOAP / HYDROCALCE

WET AREAS: PU1C

A protective treatment is optional in most circumstances. It is however necessary in

bathroom walls, kitchen and splashback walls, and a must inside shower/sauna walls.

On exteriors, protective treatments are obligatory only in highly polluted cities.

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Interiors

After a minimum of 48 hours, at least one coat of the following can be applied:

A) MARSEILLE SOAP protective coating with a steel trowel. After 48 hours, go over

the surface with a cloth to remove the coat of surface powder produced by unabsorbed

soap.

B) BEESWAX WAX applied with a sponge. After a little while, before it dries, rub

vigorously with a woollen or soft cloth to obtain an even polish.

C) MINERAL WAX applied with a sponge. After a little while, before it dries, rub

vigorously with a woollen or soft cloth to obtain an even polish.

Exteriors

This finish, as all lime-based plasters, absorbs water during rainy weather, which results in a

temporary "wet effect" on the surface. However, this plaster releases the absorbed water

within a few hours, allowing the surface to dry without any damage nor alteration to the

finish. While a final treatment is therefore optional, it is highly recommended in areas with

high pollution levels or if you wish to avoid the temporary wet effect that can occur after

rainfall. To protect the finish, after at least 72 hours at a minimum of 20°C, proceed with a

colourless, penetrating HYDROCALCE, developed to protect exterior plaster coverings.

Maintenance No special work is required in maintenance, just remove the dust periodically and re-

wax it after 5 or 6 years. Protect the coating from any contact with liquid either rain or

continuous water flowing down the wall. If any liquid such as coffee is spilled on the

surface, clean immediately.

Tools SI TROWEL / BIANKO, SCRAPERS, CORNER TROWEL, NON-WOVEN FABRIC

Clean with water immediately after use

Complements TERRACOTTA MEDIUM / MOTHER OF PEARL / MILLED MARBLE / MICA /

GLITTER / EBANO POWDER / METALLIC BEESWAX / PERLA WAX

We have drawn up the material presented above to the best of our technical and experiential knowledge. Nevertheless,

our suggestions and recommendations are not guaranteed. All responsibility for the obtained results lies solely with the

method and conditions adopted for the application of the product. Such indications constitute valid support for verifying

the product's suitability for the specific case. We reserve the right to make modifications to the present information