GLOSSARY
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MAINTENANCE COATING
A coating, other than the original coating,
of which the primary function is protection; used to maintain highway
and railroad structures, chemical plants, manufacturing plants, public
utilities, and other industrial facilities.
MAINTENANCE PAINTING
All repainting except that done for aesthetics.
MARBLING
Simulating the grain and texture of marble
by means of specially prepared colours and stain and graining tools.
MARINE PAINT
Coating specially designed for immersion
in water and exposure to marine atmosphere.
MASKING TAPE
An adhesive tape used to protect small
surfaces from becoming smeared with paint.
MASTIC
1. A heavy-bodied coating of high build.
2. An adhesive composition.
MATCHING
Hanging strips of wallcovering so that
the design is in correct relation to the preceding strip.
MSDS - MATERIAL SAFETY DATA SHEET
A printed source of information about the hazards of materials including coatings. The MSDS contains the following information:
1. Product identification;
2. Hazardous ingredients, their permissible exposure limits (PEL), and threshold limit value (TLV);
3. Physical properties;
4. Fire and explosion hazard data, such as flash point, lower and upper explosive limits, and fire fighting procedures;
5. Health hazard data;
6. Chemical reactivity/stability data;
7. Spill and leak procedures;
8. Special protection information; and
9. Additional special precautions.
MECHANICAL DRYWALL TOOL
Any mechanical device, such as an automatic
taping applicator, used to apply joint compound and/or joint tape or
to finish joints in the drywall finishing process.
MEDIUM OIL ALKYD RESIN
Alkyd resin made with a medium oil-to-resin
ratio. These resins contain between 40 and 60 percent oil as a modifying
agent.
MEDIUM OIL VARNISH
An oleo-resinous varnish, other than
alkyd, made with a medium oil-to-resin ratio.
MESH GRID
A paint roller accessory that is hung
from the top of a 5-gallon pail partially filled with paint. Like the
roughened surface of a paint tray ramp, it allows paint to be worked
into the roller cover and provides a way of removing excess paint from
the roller cover.
METAL SPRAYING
Application of a spray coat of metal
(usually zinc or aluminium) onto a prepared surface.
METALLIC PAINT
Paint containing tiny flecks of aluminium
or other metal, often used because of its attractive appearance.
METALIZING
The spray application of a coating of
metal onto a surface.
MIL
One thousandth of an inch (0.001 inch,
25.4 micrometers). The thickness of a coating on a surface is usually
measured in mils. Metric 'mil' for millimetre equals 1/1000 of
a meter.
MILDEW
A fungus growth that "feeds" on paint, wallcovering, and other materials in damp places. It causes discolouration and deterioration.
MILDEWCIDE
An additive used to enhance a coating’s
ability to resist fungus growth that can cause discolouration and ultimately
decompose the binding medium.
MILDEW RESISTANCE
The ability of a coating or a wallcovering
to deter the growth of mildew.
MILL SCALE
The heavy oxide layer formed during hot
fabrication or heat treatment of steel and other metals.
MINERAL SPIRITS (PAINT THINNER)
A petroleum-derived solvent used for
thinning paint. Odourless mineral spirits have been refined to remove
some odorous constituents.
MISCIBLE
Capable of mixing or blending uniformly.
MIST COAT
Thin tack coat; thin adhesive coat.
MOISTURE TRAP
A device used to remove moisture from
the air lines of abrasive blasting or spray painting equipment. A bleed
valve at the bottom of the device is left open slightly to allow water
caught in the trap to drain out.
MONOMER
The starting compound for a polymerisation
reaction. A monomer is capable of polymerising, or linking together,
with itself or with different monomers.
MSDS
See MATERIAL SAFETY DATA SHEET.
MUD
Trade jargon for joint compound.
MUD CRACKING
A paint film defect that has the appearance
of dried mud cracks.
MULTICOMPONENT SPRAYING
A paint application method that automatically proportions and mixes two or more components of a paint material in the process of delivering them to the spray gun. Plural component spray equipment is used to apply coatings with a pot life that is too short to permit mixing and application by conventional air and airless spray equipment.
MULTIPACKAGE COATING
Cross-linking paint materials that must
be stored in two or more separate containers and that must be mixed
in the correct proportion before use. Once they are mixed, a chemical
reaction begins and the paint remains usable for a limited time only.
MURAL
A hand-screened, machine-printed, or
lithographed mural decoration with a pattern that continues over several
strips of wallcovering; intended to cover one wall of a room or the
greater part of a wall without a repeat.
MURIATIC ACID
A diluted form of hydrochloric acid used
to clean concrete and masonry.
