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Marble
is a metamorphic, crystalline rock formed but the
intrusion of an igneous rock into a limestone stone mass.
The heat and pressure of such an event alters the original
molecular structure of the calcite present in the
limestone and causes re- crystallization of the calcite
and the formation of new minerals. The result is marble
with the much appreciated, characteristics of heavy
veining and wide range of colors. Marble surfaces take a
high polish; but are not very hard and scratch easily. Its
natural composition makes marble an easy target for acids
normally found in food and cleaning products. The acids
etch the marble surface damaging the polished finished.
Marble is porous stone and requires preventive sealing
with silicone based, impregnators. With proper
maintenance, using neutral products, marble performs
extremely well. It is not recommended for use in kitchens.
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MARBLE:SHITUO
INC.'s collection of marble tiles and slabs range from the classic old
world beauties to unique, recently unearthed varieties. You can rely
on SHITUO INC. for top quality MARBLE, reliable information from stone
experts, and consistently responsive service. Our excellent worldwide
sources provide us with natural MARBLE from Italy, France, Spain,
Greece, Brazil, India, Pakistan, Turkey, Morocco, China, Canada,
Mexico, and the United States. |
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----Methods of cleaning
If normal cleaning does not remove
discoloration or if staining is deep seated, a poultice
application is recommended.
----Poultice ! a basic method for stain
removal
A poultice is made with powdered
whiting and hydrogen peroxide or a chemical reducing agent,
depending on the nature of the stain. Whiting is sold in most
paint stores. The poultice should be applied as described
below for each particular stain removal. |
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Marble
is a recrystallized limestone that forms when the limestone is
softened from heat and pressure within the earth's crust and
recrystallizes into marble where mineral changes occur. Marble
consists mainly of calcium and dolomite, comes in many colors and is
usually heavily veined.
Marble
is often used for bathroom vanities, flooring, tub and fireplace
surrounds, and end and coffee table tops. It can be polished, honed,
or tumbled. |
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Taking
care of your marble
It
is very important to begin taking care of your marble from the beginning
with proper stone care products. Restoration is often required on
neglected or improperly treated marble.
The
best way to maintain the appearance of any marble surface is to wash it
frequently and to immediately rinse off any spilled materials. Marble
should be cleaned periodically with a nonfat, mild detergent and
lukewarm water, rinsed generously with clean water and wiped with clean
cloths to make certain no residue remains. Abrasive cleaners should not
be used on polished marble as scratches and dull areas result.
Some
marble surfaces, such as fireplace mantels, can be protected from dirt
and soil marks by applying white or non-yellowing wax or sealer. There
is a variety of materials available.
Wax
is not normally used on marble boors or food preparation surfaces, as it
may make floors slippery and possibly cause food contamination. Sealers
may be used for floors, but may cause a slight darkening of white
marble. When in doubt, make a trial application in an inconspicuous
area.
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Stain
Removal Guide and Chemical Chart
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All
solutions are given starting with the most gentle method first. All
the chemicals mentioned can be purchased from Benson Stone Company or
most hardware stores. Hydrogen peroxide 35% can be purchased at beauty
salon supply houses. Always wear rubber gloves when handling
chemicals. |
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Problem |
Solution |
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Problem |
Solution |
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Iron stain (rust) |
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Make
a poultice of a commercial liquid rust remover mixed with whiting
to form a thick paste.
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Apply
a thick layer of this mixture over the stained area.
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Place
a piece of plastic kitchen wrap over the mixture and secure in
place.
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Leave
the application in place overnight.
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Remove
the poultice mixture and rub the marble surface with a dry cloth.
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Organic stains
(paper, tea, coffee, fruit, cosmetics, tobacco, etc.) |
- Mix a poultice consisting of
whiting and 20% hydrogen peroxide (hair bleach) to form a thick
paste.
- Apply a 1/2" thick layer
of this mixture over the stain.
- To keep the poultice from
drying too rapidly, cover the poultice with a piece of plastic
kitchen wrap, held in place with masking tape.
- Leave this in place overnight
! for very stubborn stains, as much as 48 hours may be required.
- If after the first
application the stain is still noticeable, repeat the application,
or add a few drops of household ammonia to the poultice mixture
just before covering it with the plastic wrap.
- After the stain disappears,
remove the application, rinse with clean water and wipe dry.
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Ink |
Poultice
with one of the following:
- Bleach or hydrogen peroxide
35% for light-colored marble only
- Lacquer thinner or acetone
for dark marble
- Methyl chloride
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Soot and smoke |
- Scrub the surface with a
nonfat detergent and a stiff fiber brush, then rinse with clean
water.
- If this still leaves
noticeable dirt and stains, continue with the following steps.
- Cover the whole surface with
a poultice consisting of baking soda or some alkaline cleaner
mixed with a liquid laundry bleach to form a thick paste.
- Spread on the stained surface
to a thickness of about 1/2".
- Cover with damp cloths to
keep the poultice damp.
- Leave in place overnight.
- Remove by wetting and/or
scraping with a wooden spatula, plywood or stiff cardboard.
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Oil-based stains
(grease, cooking oil, tar,
food stains, etc.) |
- The first step is to always
locate and remove the source of the stain.
- Wash the surface with
ammonia, then rinse with plenty of clean, lukewarm water. If this
lightens the stain, repeat until the stain is completely gone.
If the stain still appears, continue with the following steps:
- Treat the stain with a
poultice mix with acetone and whiting to form a thick paste.
- Apply a 1/2" thick layer
of this mixture over the stained area.
- To keep the acetone from
evaporating and the poultice from drying too rapidly, cover the
poultice with a piece of plastic kitchen wrap, held in place with
masking tape.
- Leave the application in
place overnight (for stubborn stains, leave on longer ! as much
as 48 hours may be required).
- Remove the poultice and rub
the marble with a dry cloth. If some stain remains, repeat the
application.
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Etch marks
polishing procedure |
- Use a special polishing
powder, tin oxide (available from many stone dealers).
- Wet the marble surface well.
- Sprinkle the polishing powder
over the surface, then rub firmly and vigorously with a cloth pad.
- A considerable amount of hard
rubbing may be required; therefore, a buffing pad of the type used
with an electric drill may be employed.
- Buffing should be continued
until the etch marks disappear and the surface shines as it
originally did. Rinse with clean water and buff dry.
Note: If a large area
requires repolishing, it should not be attempted by hand. Consult
Benson Stone Company. |
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