Q: Why is the
rock not sticking on the wall? A:
Dirty rocks - wash them well Rocks too wet - let them dry
Mortar too wet or too dry - use more water or more sand and
cement to adjust your mix Not enough cement in the mix - add
more cement (add bonding agent) Poor quality stone (too
Q: Why is the mortar not sticking to a Masonry wall?
A: You did not use bonding agent to coat
the wall, or rough the surface up - coat wall with bonding
agent or rough the surface up Dirty or greasy wall - clean
it and coat it with bonding agent Mortar too wet or too dry
- use more water or more sand and cement to adjust your mix
Not enough cement in the mortar - add more cement (add
bonding agent) Wall too wet - let it dry
Q: Why doesn't the mortar stick to a wood wall?
A: Mortar too wet or too dry - use more
water or more sand and cement to adjust your mix Not enough
cement in the mortar - add more cement Forgot to put on
metal lath - put on metal lath
Q: How do I deal with mortar joints?
A: Mortar joints make all the difference
between professional and unprofessional looking stonework.
The most important thing is to keep your work neat and
clean. It is easy to clean the mortar off the stone while
the mortar is still weak. It is a lot of work - if not
impossible to get mortar off after it has set up.
Q: What do I do to repair a loose stone?
A: If the mortar is still solid in the
hole, remove the stone and clean it well. Put a good
adhesive on the back of the stone as well as in the hole it
came out of and re set the stone. You may have to brace it
until the adhesive sets.
Q: What do I do if the mortar is crumbling or broken
up? A: Remove any loose stone and
mortar, clean the stone well, re-mortar it into place and
redo your mortar joints. Use bonding agent in your mortar.
Q: Why is rock falling off the wall after the job is
finished? A: Stones were disturbed
before they had set up. Stones were not tapped into the
mortar to create suction. Note enough mortar was put behind
the rocks or it was poor mortar. Bonding agent was not used
on your Masonry wall. Poor rock that flakes off like mica
was used (not our rock!). Dirty rock was used. The building
settled and cracked the stonework. The footings were not
adequate or settled too muck, (or perhaps a frost heave
caused it). The metal lath was not secured well enough. The
Q: Why is the mortar starting to crumble and fall
out? A: You did not use enough
cement in your mortar. You used bad cement. There was dirt
in your sand, or you used poor sand. The sand must be sharp
and clean. There was salt in your sand The moisture was
sucked out of your mortar too fast so it dried too quickly
and did not have a chance to cure properly. Bonding agent
helps to prevent this. Mortar was used that should have been
thrown out. Do not add water to drying out mortar unless you
really know what you are doing. Once the chemical reaction
has taken place, the mortar could be shot. Your mortar may
GRANITE Granite is an
important structural and decorative stone. Itís used for immense
structural work due to its high compressive strength and
durability. It is the hardest structural stone. Graniteís rich
colors, stiffness and density, make it an ideal choice for
flooring, counter tops, vanities as well as exterior
applications. Many stylish patterns and colors make granite the
most versatile and trendy of all stones. It is also a very
low-maintenance stone. Granite is composed of quartz, feldspars,
micas and other minerals. These minerals contribute to the color
and texture of the granite stones. Granites get their wonderful
variety of colors and patterns from minerals that are melted
into the liquid mass as it is formed..
MARBLE Marble has been
valued for thousands of years for its rich palette of beautiful
colors and appearance and is perfect, pretty much anywhere in
the house. Marble stones consist of limestone that has undergone
heat and pressure. A transformation process takes place when the
weight of overlying material, pressure from crystal collisions
and heat from the earth's core generate temperatures in excess
of 1800ļF.Texture of marble depends on the form, size and
uniformity of grains. The element components of marble determine
the color of the stone. Generally calcite and dolomite marbles
are of pure white color. Variations of whiteness of pure marbles
are due to the mixture of foreign substances. Such impurities
form streaks and clouds.
TRAVERTINE Travertine is generally used
for floors, walls, countertops and for outside as cladding and
Travertine is generally filled with grout before it is
honed or polished, which produces a uniform surface more like
other marbles. Unfilled travertine is also quite beautiful, and
is often seen as exterior surfaces of buildings. Travertine
stones result from hot spring water penetrating up through
underground limestone. When the water evaporates, it leaves
behind layers of dissolved limestone and other minerals, giving
it its banded appearance. Travertine stones are generally
light-colored beiges and tans.
LIMESTONE The soft limestone stones are
ideal for today's more casual and comfortable environments.
Generally these soft beiges and tans are suitable for bathrooms,
fireplaces, counters and floors. Limestone is a sedimentary rock
that is formed at the bottom of lakes and seas, as organic
matters settle to the bottom. As more and more layers build up
over thousands and millions of years, adding more and more
weight, the heat and pressure cause chemical reactions to take
place to harden the sediments into solid stone.
SLATE The lively colors and unique
texture make slates appropriate for interior as well as exterior
applications. Slate is formed of compressed layers of sediments
formed under ocean. Since it is formed in layers, it can easily
be split to expose beautifully textured surfaces. The usual
colors of slates are earthy browns, beiges, yellows, black,
dark-grays, and greenish-gray, pinks, purples and copper are
also found. They usually exhibit lot of variations even in the
same quarry. Slates are used for flooring, cladding and
SANDSTONE Sandstone consists of sand
covered by silica, iron and lime. Cementing material determines
the color of sandstone, iron sandstones are reddish, brownish;
carbonaceous, black; siliceous, white and argillaceous, earthy
to buff. The hardness of sandstones is important in deciding
suitability for applications for sandstone.
QUARTZITE Quartzite stones are the same
with slates, but with higher content of quartz in them, which
gives them, a bright texture. They are very similar to slates.
Like slates, quartzites are used for various applications
depending on their hardness.
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