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| Malibu light |
| Low-voltage lights designed, usually, for outdoor use. |
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| Mar resistance |
| Ability of a coating to resist damage caused by light abrasion, impact or pressure. |
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| Marbling |
| A special effect glazing technique which makes a substrate look like marble. |
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| Marine coatings |
| Paints and varnishes specifically formulated to withstand water immersion and exposure to marine atmosphere. |
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| Marine Paint |
| Coating specially designed for immersion in water and exposure to marine atmosphere. |
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| Masking |
| Covering an area that will not be painted. |
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| Mason's sand |
| A fine, dry prescreened sand. |
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| Masonry |
| Brick, tile, stone, block or other material, usually small enough to be handled by one man, that bonds together with mortar to form a permanent structure. |
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| Masonry anchor |
| Metal fastener used to hold wood structural members to masonry. |
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| Masonry conditioner |
| A solvent based pigmented primer coating formulated to have great penetrating power so as to prepare masonry (especially chalky stucco) to receive finish coats. Particularly important under latex paints. |
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| Masonry wall |
| A wall made of concrete, cinderblock or brick. |
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| Masstone |
| Color produced by a single color dispersed full strength in a suitable vehicle. |
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| Mastic |
| The thick adhesive used to hold floor and wall tiles in place. |
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| Matching |
| The technique of joining two strips of wallpaper so that partial designs will line up suitably or a sequence of designs will line up properly. |
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| Matte finish - wallpaper |
| A refinement or finish on the decorative wallpaper surface that has very little shine or light reflection; a dull finish. |
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| Medium |
| The liquid that is used to disperse pigments. Another name for vehicle or binder. |
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| Medium oil varnish |
| Varnish of medium oil content usually containing from 18 to 25 gallons of oil per 100 pounds of resin. |
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| Medium-density overlay (MDO) |
| Plywood panels that have a resin-impregnated overlay on one or both sides. The overlay has a texture designed for even paint application. |
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| Melting Point |
| Transition point between the solid and the liquid state. Expressed as temperature at which this change occurs. |
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| Memory |
| The original shape or position that a wallpaper may return to, even after installation on a wall. Wallpaper with high memory factor can shrink at the seams as it dries. |
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| Menhaden Oil |
| A yellowish-brown oil derived from small ocean fish, menhaden. |
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| Merchantable heart grade |
| The most economical all-heartwood redwood grade. Allows large knots and small knot holes, and is suitable for fences and posts. Used in some prefabricated fencing. |
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| Metallic Paint |
| Paint which contains metallic pigment usually in the form of tiny flakes. Used generally to increase the eye-appeal of the finished coat. |
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| Metallizing |
| A process of coating a surface with a layer of metal by spraying, vacuum deposition, dipping, plasma jet, cementation, etc. |
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| Metamerism |
| The phenomenon by which colors match when viewed under one type of light (e.g.: daylight), but differ when viewed under another type of light (e.g.: fluorescent). |
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| Methacrylate Resins |
| A class of resins produced by the polymerization of methacrylic esters. |
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| Methylene chloride |
| A chemical compound thought to be carcinogenic. Contained in most effective chemical strippers. |
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| Metric roll (Euro bolt) |
| An amount of wallpaper containing 28 to 30 square feet per single roll. This is about 25 percent less than the American single roll. The standard metric single roll is usually about 21-inches wide and 16-1/2-feet long; however, some manufacturers are making metric-size single rolls 27-inches wide by 13-1/2-feet long. Metric double rolls contain approximately 56 to 60 square feet. |
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| Micron |
| A micrometer or one millionth of a meter. |
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| Mil |
| One one-thousandth of an inch; the measurement used to gauge the thickness of PVC and rubber pond liners. |
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| Mildew |
| A fungus that grows in dark, moist environments. It appears in different colors such as black, gray, yellow, green or purple. |
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| Mildewcide |
| Chemical agent which destroys, retards or prevents the growth of mildew. |
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| Mill Oil |
| Film of forming oil usually found on galvanized or cold-rolled steel as shipped from the mill. |
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| Mill Paste |
| A heavy-bodied mixture of pigment and vehicle produced in ball or pebble mills. An intermediate product in coating manufacturing. |
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| Mill Scale |
| The heavy oxide layer formed during heat treatment or hot working of metals; often refers to steel forming magnetic oxide. |
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| Mineral oil |
| Any liquid product of petroleum within the viscosity range of products commonly called oils and consisting of high molecular weight hydrocarbons. |
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| Mineral spirits |
| Volatile solvent for oil-based finishes. Also called turpentine or paint thinner. |
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| Miscible |
| Capable of mixing or blending uniformly. |
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| Mismatch |
| A situation where the patterns on wallpaper do not line up evenly from one strip to another. |
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| Mist Coat |
| For inorganic zincs, a mist coat is applied to “wet” the surface prior to application of a full coat. |
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| Mist Coat Solvents |
| A solvent especially formulated to help blend in the edges or overspray of a repaired area. Mist coat solvents are similar to regular paint solvents except that they may evaporate more quickly. |
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| Modular |
| Units of a standard size, such as pieces of a sofa, that can be fitted together in a number of ways. |
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| Moiré |
| A watered wood-grain effect printed or embossed on the decorative surface of wallpaper. |
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| Moisture content (in wood) |
| The amount of water contained in wood, expressed as a percentage of the dry weight of wood. |
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| Moisture curing |
| Moisture cured urethanes dry by solvent evaporation and cure by reacting with moisture/water vapor in the air. Generally, for this to occur, relative humidity levels must exceed 20%. |
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| Moisture-resistant drywall |
| Also called blueboard or greenboard; a moisture-resistant (not waterproof) type of wallboard that can withstand high levels of humidity, often used in bathrooms, kitchens and laundry rooms. |
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| Molding |
| A thin strip, usually wood, that has been cut, shaped, and/or embossed in a decorative manner. Moldings are used as trim, and the two terms are often used interchangeably. |
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| Molding depth |
| Distance between the bottom edge of a crown molding and the ceiling plane. |
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| Molecule |
| The smallest unit of a substance. |
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| Monochromatic |
| Having only one color or the various tonal values of one color. A monochromatic wallpaper pattern contains same-color blends. |
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| Monomer |
| Small molecule capable of undergoing polymerization. |
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| Moonlighting |
| A lighting effect that sends light filtering through branches and casts interesting complex shadow patterns, much as real moonlight does. |
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| Morocco leather |
| A soft and expensive leather made from the skin of goat and tanned with sumac; by extension, a paint technique imitating it. |
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| Mortar |
| A mixture of cementitious materials, fine aggregate and water. Mortar is used to bond bricks or blocks. |
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| Mosaic tile |
| Glass or clay tile that is 2-inches square or smaller. Usually it is packaged in sheet-mounted form. |
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| Motif |
| The duplicated design of vertical and horizontal repeats in a wallpaper pattern. Motif refers to the recurring subject matter. |
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| Mottler |
| A flat-ended brush used to make woodlike texture in glazed surfaces. |
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| Mottling |
| A manufacturing defect consisting of ink spots on the surface of wallpaper. |
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| Multiple-drop match |
| A drop-match wallpaper pattern that is neither a half-drop nor a straight-cross match. The multiple-drop match will repeat itself at the ceiling line every third, fourth, fifth, sixth, seventh, etc., strip, depending on the distance of the horizontal pattern match drop, as compared with the vertical repeat. If the match is neither a straight-across nor a half-drop, then it is most likely a multiple-drop. |
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| Munsell Color System |
| System of color definition based on hue, chroma, and value. |
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| Muntins |
| Framing members of a window that divide the panes of glass. |
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| Mural wallpaper |
| Any wallpaper showing a picture or a scene, whether of the countryside, a historical event, modern art or other design. Murals usually come packaged in paneled strips that join together in a particular, numbered order to form the scene. |
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| Muriatic Acid |
| A diluted form of hydrochloric acid used to clean and etch masonry and metal. Protective covering should be used when applying this poisonous chemical. |
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| Mylar |
| A trademarked name for a strong but thin polyester film, often with a metallic pigmentation. |
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