Tiling Glossary L–O – Tiling Terminology

Tiling Glossary:

L-OTiling Glossary - Tile Installation meeting ANSI specifications

Lap joint.
A joint made by overlapping adjacent edge areas of two adherents to
provide facing surfaces which can be joined with an adhesive.
Latex.
A water emulsion of a synthetic rubber or plastic obtained by
polymerization and used especially in coatings and adhesives.
Latex grout.
A portland cement grout with a special latex additive which results in a
less rigid, less permeable grout than regular portland cement grout.
Latex mortar.
A mixture of portland cement, sand, and special latex additives which is
used for bonding tile to back-up material. It is less rigid than portland
cement mortar.
Lath.
A wood strip or metal mesh, which acts as a background or reinforcing
agent for the scratch coat or mortar coat.
Layout stick.
A long strip of wood marked at the appropriate joint intervals for the
tile to be used. It is used to check the length, width, or height of the tile
work. A common name for this item is idiot stick.
Leaching.
Leaching is a condition where liquids ooze out of the joint between
ceramic tile veneer, regardless of the veneer is grouted or not, and runs down
over the tile.
Lime.
Specifically, calcium oxide, also, loosely, a general term for the various
chemical and physical forms of quicklime, hydrated lime and hydraulic hydrated
lime.
Limestone.
A sedimentary carbonate rock, composed chiefly of calcite, but sometimes
containing appreciable dolomite.
Live load.
The moving load or variable weight to which a building is subjected, due
to the weight of the people who occupy it, the furnishings and other movable
objects.
Load.
A force provided by weight or mass (gravitational), external or
environmental sources such as wind, water and temperature, or other sources of
energy.
Marble tiles.
Marble cut into tile sizes twelve (12) inches squares of less, usually 1/2
inch to 3/4 inch think. Several types of finishes are made, polished, honed,
split faced, etc.
Mastic.
Organic tile adhesive.
Mexican paver tile.
Terra cotta-like tile, used mainly for floors, and handmade. These tiles
vary in color, texture and appearance, from tile to tile and within each tile.
They are available in squares up to 12 inches, and in various shapes. These
tiles are coated with various types of sealers because of their soft
adsorptive characteristics. The coatings provide a wearing surface on the
pavers which would otherwise powder away under wear.
Mixing time.
The period during which the constituents of a batch of concrete are mixed
by a mixer; for a stationary mixer, time is given in minutes from the
completion of mixer charging until beginning of discharge; for a truck mixer,
time is given in good mixing in a specific speed or expressed in terms of
total revolutions at a specific mixing speed.
Monocottura (Single-fired).
A term used for tile manufactured by a process which allows the
simultaneous firing of the clay with the glaze producing a finished tile with
a single firing.
Mortar.
A mixture of cement paste and fine aggregate; in fresh concrete, the
material occupying the interstices among particles of coarse aggregate; in
masonry construction, mortar may contain masonry cement, or may contain
hydraulic cement with lime (and possibly other admixtures) to afford greater
plasticity and workability than are attainable with standard hydraulic cement
mortar.
Mosaics
Small tiles or bits of tile, stone, or glass. These are used to form a
surface design or an intricate pattern.
Mounted tile.
Tile assembled into units or sheets by suitable material to facilitate
handling and installation. Tile may be face-mounted, back-mounted or
edge-mounted. Face-mounted tile assemblies may have paper or other suitable
material applied to the face of each tile, usually by water soluble adhesives
so that is can be easily removed after installation but prior to grouting of
the joints. Back-mounted tile assemblies may have perforated paper, fiber
mesh, resin or other suitable material bonded to the back and/or edges of each
tile which becomes an integral part of the tile installation. Back-mounted and
edge-mounted tile assemblies shall have a sufficient exposure of tile and
joints surrounding each tile to comply with bond strength requirements. Tile
manufacturers must specify whether back-mounted and edge-mounted tile
assemblies are suitable for installation in swimming pools, on exteriors
and/or in wet areas.
Mud.
A slang term for mortar.
Non-vitreous.
That degree of vitrification evidenced by relatively high water
absorption.
Notched trowels.
Notched trowels are available in the serrated and square-tooth design. The
teeth are made in various sizes. The correct tooth size and depth must be used
to apply the thickness of bonding mortar specified. These trowels are used to
apply all of the various kinds of bonding materials for ceramic tile. When the
teeth become worn, the trowel has to be reshaped or replaced.
Open time.
The period of time during which the bond coat retains its ability to
adhere to the tile and bond the tile to the substrate.
Organic adhesive.
A prepared organic material, ready to use with no further addition of
liquid or powder, used for bonding tile to back-up material by the thin set
method. Cures or sets by evaporation.
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