FAUX MARBLE Slide 2 MAIN TECHNIQUES OF IMITATION OF MARBLE
1)PAINTED OVER PLASTER OR WOOD 2) PASTE (ARTIFICIAL MARBLE) Slide 3
1) PAINTED the plaster can be made with lime and / or gypsum with
fine sand or marble powder (stucco) the decoration can be done with
fresco or dry techniques After the decoration is dry, proceed to
polish with Marseille soap and / or beeswax, using a hot or cold
method Slide 4 Slide 5 Slide 6 FRESCO TECHNIQUE The dye consists of
pigment diluted in water, applied over the final layer of plaster
before it has cooled completely (about two hours after we laid the
plaster). It is the same technique that the painters use to make
figurative frescoes. This way the color penetrates a few
millimeters into the plaster for and the painting, after
carbonation, is incorporated and very durable. Slide 7 DRY
TECHNIQUE Faux fresco The finishing layer of plaster is refreshed
by applying lime water or just water. The colors are diluted with
lime water Tempera Painting The word tempera means a color mixture
dissolved in water with the addition of an adhesive substance. The
resistance of the tempera is due to the adhesive used but it is a
type of finish with similar resistance to the faux fresco The glues
used in the past were organic, such as vegetable glues (flour,
starch, all very hygroscopic) or animal glues (egg, milk, casein)
Slide 8 OIL COLORS TECHNIQUE The pigments are diluted and sometimes
mixed with essential oils or with wax and resin. It is possible to
superimpose the colors when the previous layer is dry Slide 9
Execution steps of the fresco technique In order to have a
realistic imitation, two conditions are necessary: 1 - a realistic
imitation of colors and grains of marble or stone 2 - a smooth
surface that may be subsequently polished. We'll also have to
establish, for example, a hypothetical division into slabs: in
fact, the imitation must reproduce what would have been a real work
in marble or stone even under these technical aspects. Therefore we
split the wall in equal zones of size similar to the real slabs,
roughly between 60 and 80 cm. In the realization of the grain you
will have the foresight to make them with different inclination in
adjacent plates to emphasize the detachment. We will define the
borders of the area to be painted with masking tape Slide 10 Slide
11 Slide 12 We prepare the necessary colors: one for the base and
the other for the nuances and grains of our marble. The foundation
will be of the prevailing colors of the marble. Slide 13 Slide 14
When the color is still wet, we can use a sponge or a rag to stain
and fade it. We draw the grains of marble, first one color and then
another and so on, in a realistic way using different brushes.
Slide 15 Slide 16 Slide 17 Slide 18 Slide 19 Slide 20 Slide 21
Slide 22 The polishing step can be done using two systems: cold or
warm. 1. Cold system : We repeatedly smooth out the surface using
metal tools (trowel, American) Slide 23 - then we apply soap or wax
- we have to strongly and insistently polish the surface with a
soft cloth Slide 24 Slide 25 2.Warm system We use an iron blade to
smooth out the surface, then, after about three or four hours, we
run the warm iron over the plaster (but not too hot, about 45 C) to
obtain transparency. We rub warm water and soap or liquid wax (that
has been diluted by 10-12%) over the plaster several times
smoothing it out with the warm iron. The iron must be cleaned after
the operation. - If you dont have a plaster iron you can use a
regular iron (no steam) Slide 26 Plaster iron Slide 27 At work!
Slide 28 Slide 29 Slide 30 Slide 31 Slide 32 Slide 33 Slide 34
Slide 35 Slide 36 Slide 37 Slide 38 Slide 39 Slide 40 EXAMPLES
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